1b21

DELETION OF A BURIED SALT BRIDGE IN BARNASE

Method: X-RAY DIFFRACTION D_max: 83.4 Å Quality: GOOD

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1. Protein Identity and Related Structures Protein Identity & Related Structures

PROTEIN (BARNASE)

Bacillus amyloliquefaciens

State in the Current Structure

Assembly	Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Associated Components	Method and Experimental Conditions	Structure Quality
1	Protein monomer Monomer Protein × 1 PDB declaration: monomeric（1） Consistent with protein copy count	Chain A； UniProt 48–157	Mutation：R69S, D93N	No other associated polymer	X-RAY DIFFRACTION X-ray crystallization conditions：pH 7.5；DROP: 8-12 MG/ML PROTEIN 6 MM ZNSO4 0.6 M (NH4)2SO4 WELL: 2.58-2.73 M AMMONIUM PHOSPHATE BUFFER, PH 7.5 1-2 MM ZNSO4 0.15-0.30 M (NH4)2SO4 5-10 MM NH4OH	Resolution 2.00 Å R-free 0.268
2	Protein monomer Monomer Protein × 1 PDB declaration: monomeric（1） Consistent with protein copy count	Chain B； UniProt 48–157	Mutation：R69S, D93N	No other associated polymer	X-RAY DIFFRACTION X-ray crystallization conditions：pH 7.5；DROP: 8-12 MG/ML PROTEIN 6 MM ZNSO4 0.6 M (NH4)2SO4 WELL: 2.58-2.73 M AMMONIUM PHOSPHATE BUFFER, PH 7.5 1-2 MM ZNSO4 0.15-0.30 M (NH4)2SO4 5-10 MM NH4OH	Resolution 2.00 Å R-free 0.268
3	Protein monomer Monomer Protein × 1 PDB declaration: monomeric（1） Consistent with protein copy count	Chain C； UniProt 48–157	Mutation：R69S, D93N	ZN ZINC ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions：pH 7.5；DROP: 8-12 MG/ML PROTEIN 6 MM ZNSO4 0.6 M (NH4)2SO4 WELL: 2.58-2.73 M AMMONIUM PHOSPHATE BUFFER, PH 7.5 1-2 MM ZNSO4 0.15-0.30 M (NH4)2SO4 5-10 MM NH4OH	Resolution 2.00 Å R-free 0.268

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB	Difference from Current Entry 1B21	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
1A2P BARNASE WILDTYPE STRUCTURE AT 1.5 ANGSTROMS RESOLUTION Deposited 1998-01-07	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 48–157（110 aa）	Not recorded	ZN ZINC ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions pH 7.5；pH 7.5	Resolution 1.50 Å R-free 0.174
1A2P BARNASE WILDTYPE STRUCTURE AT 1.5 ANGSTROMS RESOLUTION Deposited 1998-01-07	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain B 48–157（110 aa）	Not recorded	ZN ZINC ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions pH 7.5；pH 7.5	Resolution 1.50 Å R-free 0.174
1A2P BARNASE WILDTYPE STRUCTURE AT 1.5 ANGSTROMS RESOLUTION Deposited 1998-01-07	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain C 48–157（110 aa）	Not recorded	ZN ZINC ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions pH 7.5；pH 7.5	Resolution 1.50 Å R-free 0.174
1B20 DELETION OF A BURIED SALT-BRIDGE IN BARNASE Deposited 1998-12-03	Different mutation/modification Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 48–157（110 aa）	Mutation：R69S	ZN ZINC ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions pH 7.5；DROP: 8-12 MG/ML PROTEIN 6 MM ZNSO4 0.6 M (NH4)2SO4 WELL: 2.58-2.73 M AMMONIUM PHOSPHATE BUFFER, PH 7.5 1-2 MM ZNSO4 0.15-0.30 M (NH4)2SO4 5-10 MM NH4OH	Resolution 1.70 Å R-free 0.217
1B20 DELETION OF A BURIED SALT-BRIDGE IN BARNASE Deposited 1998-12-03	Different mutation/modification Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain B 48–157（110 aa）	Mutation：R69S	ZN ZINC ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions pH 7.5；DROP: 8-12 MG/ML PROTEIN 6 MM ZNSO4 0.6 M (NH4)2SO4 WELL: 2.58-2.73 M AMMONIUM PHOSPHATE BUFFER, PH 7.5 1-2 MM ZNSO4 0.15-0.30 M (NH4)2SO4 5-10 MM NH4OH	Resolution 1.70 Å R-free 0.217
1B20 DELETION OF A BURIED SALT-BRIDGE IN BARNASE Deposited 1998-12-03	Different mutation/modification Different structure-quality metrics	Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain C 48–157（110 aa）	Mutation：R69S	ZN ZINC ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions pH 7.5；DROP: 8-12 MG/ML PROTEIN 6 MM ZNSO4 0.6 M (NH4)2SO4 WELL: 2.58-2.73 M AMMONIUM PHOSPHATE BUFFER, PH 7.5 1-2 MM ZNSO4 0.15-0.30 M (NH4)2SO4 5-10 MM NH4OH	Resolution 1.70 Å R-free 0.217
1B27 STRUCTURAL RESPONSE TO MUTATION AT A PROTEIN-PROTEIN INTERFACE Deposited 1998-12-04	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions pH 8；18-24% PEG-8K 0.2 M AMMONIUM SULPHATE 0.1 M TRIS PH8.0	Resolution 2.10 Å R-free 0.259
1B27 STRUCTURAL RESPONSE TO MUTATION AT A PROTEIN-PROTEIN INTERFACE Deposited 1998-12-04	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain B 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions pH 8；18-24% PEG-8K 0.2 M AMMONIUM SULPHATE 0.1 M TRIS PH8.0	Resolution 2.10 Å R-free 0.259
1B27 STRUCTURAL RESPONSE TO MUTATION AT A PROTEIN-PROTEIN INTERFACE Deposited 1998-12-04	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 3 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain C 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions pH 8；18-24% PEG-8K 0.2 M AMMONIUM SULPHATE 0.1 M TRIS PH8.0	Resolution 2.10 Å R-free 0.259
1B2S STRUCTURAL RESPONSE TO MUTATION AT A PROTEIN-PROTEIN INTERFACE Deposited 1998-11-30	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 48–157（110 aa）	Mutation：K27A	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions pH 8；18% PEG-4K 0.1M TRIS PH8.0 0.2M LI2SO4	Resolution 1.82 Å R-free 0.249
1B2S STRUCTURAL RESPONSE TO MUTATION AT A PROTEIN-PROTEIN INTERFACE Deposited 1998-11-30	Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain B 48–157（110 aa）	Mutation：K27A	SO4 SULFATE ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions pH 8；18% PEG-4K 0.1M TRIS PH8.0 0.2M LI2SO4	Resolution 1.82 Å R-free 0.249
1B2S STRUCTURAL RESPONSE TO MUTATION AT A PROTEIN-PROTEIN INTERFACE Deposited 1998-11-30	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 3 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain C 48–157（110 aa）	Mutation：K27A	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions pH 8；18% PEG-4K 0.1M TRIS PH8.0 0.2M LI2SO4	Resolution 1.82 Å R-free 0.249
1B2U STRUCTURAL RESPONSE TO MUTATION AT A PROTEIN-PROTEIN INTERFACE Deposited 1998-12-01	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 48–157（110 aa）	Mutation：K27A	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions pH 6.5；21% PEG-8K 0.2 M AMMONIUM SULPHATE 0.1 M NA CACODYLATE PH6.5	Resolution 2.10 Å R-free 0.276
1B2U STRUCTURAL RESPONSE TO MUTATION AT A PROTEIN-PROTEIN INTERFACE Deposited 1998-12-01	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain B 48–157（110 aa）	Mutation：K27A	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions pH 6.5；21% PEG-8K 0.2 M AMMONIUM SULPHATE 0.1 M NA CACODYLATE PH6.5	Resolution 2.10 Å R-free 0.276
1B2U STRUCTURAL RESPONSE TO MUTATION AT A PROTEIN-PROTEIN INTERFACE Deposited 1998-12-01	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 3 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain C 48–157（110 aa）	Mutation：K27A	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions pH 6.5；21% PEG-8K 0.2 M AMMONIUM SULPHATE 0.1 M NA CACODYLATE PH6.5	Resolution 2.10 Å R-free 0.276
1B2X BARNASE WILDTYPE STRUCTURE AT PH 7.5 FROM A CRYO_COOLED CRYSTAL AT 100K Deposited 1998-12-03	Different mutation/modification Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions pH 7.5；DROP: 8-12 MG/ML PROTEIN 6 MM ZNSO4 0.6 M (NH4)2SO4 WELL: 2.58-2.73 M AMMONIUM PHOSPHATE BUFFER, PH 7.5 1-2 MM ZNSO4 0.15-0.30 M (NH4)2SO4 5-10 MM NH4OH	Resolution 1.80 Å R-free 0.236
1B2X BARNASE WILDTYPE STRUCTURE AT PH 7.5 FROM A CRYO_COOLED CRYSTAL AT 100K Deposited 1998-12-03	Different mutation/modification Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain B 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions pH 7.5；DROP: 8-12 MG/ML PROTEIN 6 MM ZNSO4 0.6 M (NH4)2SO4 WELL: 2.58-2.73 M AMMONIUM PHOSPHATE BUFFER, PH 7.5 1-2 MM ZNSO4 0.15-0.30 M (NH4)2SO4 5-10 MM NH4OH	Resolution 1.80 Å R-free 0.236
1B2X BARNASE WILDTYPE STRUCTURE AT PH 7.5 FROM A CRYO_COOLED CRYSTAL AT 100K Deposited 1998-12-03	Different mutation/modification Different structure-quality metrics	Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain C 48–157（110 aa）	Not recorded	ZN ZINC ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions pH 7.5；DROP: 8-12 MG/ML PROTEIN 6 MM ZNSO4 0.6 M (NH4)2SO4 WELL: 2.58-2.73 M AMMONIUM PHOSPHATE BUFFER, PH 7.5 1-2 MM ZNSO4 0.15-0.30 M (NH4)2SO4 5-10 MM NH4OH	Resolution 1.80 Å R-free 0.236
1B2Z DELETION OF A BURIED SALT BRIDGE IN BARNASE Deposited 1998-12-03	Different mutation/modification Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 48–157（110 aa）	Mutation：D93N	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions pH 7.5；DROP: 8-12 MG/ML PROTEIN 6 MM ZNSO4 0.6 M (NH4)2SO4 WELL: 2.58-2.73 M AMMONIUM PHOSPHATE BUFFER, PH 7.5 1-2 MM ZNSO4 0.15-0.30 M (NH4)2SO4 5-10 MM NH4OH	Resolution 2.03 Å R-free 0.228
1B2Z DELETION OF A BURIED SALT BRIDGE IN BARNASE Deposited 1998-12-03	Different mutation/modification Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain B 48–157（110 aa）	Mutation：D93N	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions pH 7.5；DROP: 8-12 MG/ML PROTEIN 6 MM ZNSO4 0.6 M (NH4)2SO4 WELL: 2.58-2.73 M AMMONIUM PHOSPHATE BUFFER, PH 7.5 1-2 MM ZNSO4 0.15-0.30 M (NH4)2SO4 5-10 MM NH4OH	Resolution 2.03 Å R-free 0.228
1B2Z DELETION OF A BURIED SALT BRIDGE IN BARNASE Deposited 1998-12-03	Different mutation/modification Different structure-quality metrics	Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain C 48–157（110 aa）	Mutation：D93N	ZN ZINC ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions pH 7.5；DROP: 8-12 MG/ML PROTEIN 6 MM ZNSO4 0.6 M (NH4)2SO4 WELL: 2.58-2.73 M AMMONIUM PHOSPHATE BUFFER, PH 7.5 1-2 MM ZNSO4 0.15-0.30 M (NH4)2SO4 5-10 MM NH4OH	Resolution 2.03 Å R-free 0.228
1B3S STRUCTURAL RESPONSE TO MUTATION AT A PROTEIN-PROTEIN INTERFACE Deposited 1998-12-01	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 48–157（110 aa）	Mutation：H102A	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions pH 8；0.2M (NH4)2SO4; 0.1M TRIS/HCL PH 8.0: 22% PEG-8000	Resolution 2.39 Å R-free 0.324
1B3S STRUCTURAL RESPONSE TO MUTATION AT A PROTEIN-PROTEIN INTERFACE Deposited 1998-12-01	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain B 48–157（110 aa）	Mutation：H102A	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions pH 8；0.2M (NH4)2SO4; 0.1M TRIS/HCL PH 8.0: 22% PEG-8000	Resolution 2.39 Å R-free 0.324
1B3S STRUCTURAL RESPONSE TO MUTATION AT A PROTEIN-PROTEIN INTERFACE Deposited 1998-12-01	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 3 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain C 50–157（108 aa）	Mutation：H102A	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions pH 8；0.2M (NH4)2SO4; 0.1M TRIS/HCL PH 8.0: 22% PEG-8000	Resolution 2.39 Å R-free 0.324
1BAN THE CONTRIBUTION OF BURIED HYDROGEN BONDS TO PROTEIN STABILITY: THE CRYSTAL STRUCTURES OF TWO BARNASE MUTANTS Deposited 1993-05-19	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.20 Å
1BAN THE CONTRIBUTION OF BURIED HYDROGEN BONDS TO PROTEIN STABILITY: THE CRYSTAL STRUCTURES OF TWO BARNASE MUTANTS Deposited 1993-05-19	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain B 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.20 Å
1BAN THE CONTRIBUTION OF BURIED HYDROGEN BONDS TO PROTEIN STABILITY: THE CRYSTAL STRUCTURES OF TWO BARNASE MUTANTS Deposited 1993-05-19	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain C 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.20 Å
1BAO THE CONTRIBUTION OF BURIED HYDROGEN BONDS TO PROTEIN STABILITY: THE CRYSTAL STRUCTURES OF TWO BARNASE MUTANTS Deposited 1993-05-19	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.20 Å
1BAO THE CONTRIBUTION OF BURIED HYDROGEN BONDS TO PROTEIN STABILITY: THE CRYSTAL STRUCTURES OF TWO BARNASE MUTANTS Deposited 1993-05-19	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain B 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.20 Å
1BAO THE CONTRIBUTION OF BURIED HYDROGEN BONDS TO PROTEIN STABILITY: THE CRYSTAL STRUCTURES OF TWO BARNASE MUTANTS Deposited 1993-05-19	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain C 48–157（110 aa）	Not recorded	ZN ZINC ION × 1	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.20 Å
1BGS RECOGNITION BETWEEN A BACTERIAL RIBONUCLEASE, BARNASE, AND ITS NATURAL INHIBITOR, BARSTAR Deposited 1993-11-02	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.60 Å
1BGS RECOGNITION BETWEEN A BACTERIAL RIBONUCLEASE, BARNASE, AND ITS NATURAL INHIBITOR, BARSTAR Deposited 1993-11-02	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain B 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.60 Å
1BGS RECOGNITION BETWEEN A BACTERIAL RIBONUCLEASE, BARNASE, AND ITS NATURAL INHIBITOR, BARSTAR Deposited 1993-11-02	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 3 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain C 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.60 Å
1BNE BARNASE A43C/S80C DISULFIDE MUTANT Deposited 1995-03-31	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.10 Å
1BNE BARNASE A43C/S80C DISULFIDE MUTANT Deposited 1995-03-31	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain B 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.10 Å
1BNE BARNASE A43C/S80C DISULFIDE MUTANT Deposited 1995-03-31	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain C 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.10 Å
1BNF BARNASE T70C/S92C DISULFIDE MUTANT Deposited 1995-03-31	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.00 Å
1BNF BARNASE T70C/S92C DISULFIDE MUTANT Deposited 1995-03-31	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain B 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.00 Å
1BNF BARNASE T70C/S92C DISULFIDE MUTANT Deposited 1995-03-31	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain C 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.00 Å
1BNG BARNASE S85C/H102C DISULFIDE MUTANT Deposited 1995-03-31	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.10 Å
1BNG BARNASE S85C/H102C DISULFIDE MUTANT Deposited 1995-03-31	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain B 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.10 Å
1BNG BARNASE S85C/H102C DISULFIDE MUTANT Deposited 1995-03-31	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain C 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.10 Å
1BNI BARNASE WILDTYPE STRUCTURE AT PH 6.0 Deposited 1995-05-17	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions pH 6；pH 6.0	Resolution 2.10 Å
1BNI BARNASE WILDTYPE STRUCTURE AT PH 6.0 Deposited 1995-05-17	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain B 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions pH 6；pH 6.0	Resolution 2.10 Å
1BNI BARNASE WILDTYPE STRUCTURE AT PH 6.0 Deposited 1995-05-17	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain C 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions pH 6；pH 6.0	Resolution 2.10 Å
1BNJ BARNASE WILDTYPE STRUCTURE AT PH 9.0 Deposited 1995-05-17	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions pH 9；pH 9.0	Resolution 2.10 Å
1BNJ BARNASE WILDTYPE STRUCTURE AT PH 9.0 Deposited 1995-05-17	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain B 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions pH 9；pH 9.0	Resolution 2.10 Å
1BNJ BARNASE WILDTYPE STRUCTURE AT PH 9.0 Deposited 1995-05-17	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain C 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions pH 9；pH 9.0	Resolution 2.10 Å
1BNR BARNASE Deposited 1995-03-31	Different mutation/modification Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 48–157（110 aa）	Not recorded	No recorded non-water small molecule	SOLUTION NMR mmCIF provides none of the parsed conditions	Resolution not provided
1BNS STRUCTURAL STUDIES OF BARNASE MUTANTS Deposited 1994-04-11	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.05 Å
1BNS STRUCTURAL STUDIES OF BARNASE MUTANTS Deposited 1994-04-11	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain B 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.05 Å
1BNS STRUCTURAL STUDIES OF BARNASE MUTANTS Deposited 1994-04-11	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain C 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.05 Å
1BRG CRYSTALLOGRAPHIC ANALYSIS OF PHE->LEU SUBSTITUTION IN THE HYDROPHOBIC CORE OF BARNASE Deposited 1994-03-30	Different construct Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 50–157（108 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.20 Å
1BRG CRYSTALLOGRAPHIC ANALYSIS OF PHE->LEU SUBSTITUTION IN THE HYDROPHOBIC CORE OF BARNASE Deposited 1994-03-30	Different construct Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain B 50–157（108 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.20 Å
1BRG CRYSTALLOGRAPHIC ANALYSIS OF PHE->LEU SUBSTITUTION IN THE HYDROPHOBIC CORE OF BARNASE Deposited 1994-03-30	Different construct Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain C 50–157（108 aa）	Not recorded	ZN ZINC ION × 1	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.20 Å
1BRH BARNASE MUTANT WITH LEU 14 REPLACED BY ALA Deposited 1995-03-09	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.00 Å
1BRH BARNASE MUTANT WITH LEU 14 REPLACED BY ALA Deposited 1995-03-09	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain B 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.00 Å
1BRH BARNASE MUTANT WITH LEU 14 REPLACED BY ALA Deposited 1995-03-09	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain C 48–157（110 aa）	Not recorded	ZN ZINC ION × 1	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.00 Å
1BRI BARNASE MUTANT WITH ILE 76 REPLACED BY ALA Deposited 1995-03-09	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 1.90 Å
1BRI BARNASE MUTANT WITH ILE 76 REPLACED BY ALA Deposited 1995-03-09	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain B 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 1.90 Å
1BRI BARNASE MUTANT WITH ILE 76 REPLACED BY ALA Deposited 1995-03-09	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain C 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 1.90 Å
1BRJ BARNASE MUTANT WITH ILE 88 REPLACED BY ALA Deposited 1995-03-09	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.00 Å
1BRJ BARNASE MUTANT WITH ILE 88 REPLACED BY ALA Deposited 1995-03-09	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain B 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.00 Å
1BRJ BARNASE MUTANT WITH ILE 88 REPLACED BY ALA Deposited 1995-03-09	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain C 48–157（110 aa）	Not recorded	ZN ZINC ION × 1	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.00 Å
1BRK BARNASE MUTANT WITH ILE 96 REPLACED BY ALA Deposited 1995-03-09	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 48–157（110 aa）	Not recorded	ZN ZINC ION × 1	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.00 Å
1BRK BARNASE MUTANT WITH ILE 96 REPLACED BY ALA Deposited 1995-03-09	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain B 48–157（110 aa）	Not recorded	ZN ZINC ION × 1	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.00 Å
1BRK BARNASE MUTANT WITH ILE 96 REPLACED BY ALA Deposited 1995-03-09	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain C 48–157（110 aa）	Not recorded	ZN ZINC ION × 1	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.00 Å
1BRN SUBSITE BINDING IN AN RNASE: STRUCTURE OF A BARNASE-TETRANUCLEOTIDE COMPLEX AT 1.76 ANGSTROMS RESOLUTION Deposited 1993-11-17	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein–DNA Monomer；Protein × 1 PDB declaration: dimeric	Chain L 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 1.76 Å
1BRN SUBSITE BINDING IN AN RNASE: STRUCTURE OF A BARNASE-TETRANUCLEOTIDE COMPLEX AT 1.76 ANGSTROMS RESOLUTION Deposited 1993-11-17	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 2 Protein–DNA Monomer；Protein × 1 PDB declaration: dimeric	Chain M 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 1.76 Å
1BRS PROTEIN-PROTEIN RECOGNITION: CRYSTAL STRUCTURAL ANALYSIS OF A BARNASE-BARSTAR COMPLEX AT 2.0-A RESOLUTION Deposited 1994-03-11	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.00 Å
1BRS PROTEIN-PROTEIN RECOGNITION: CRYSTAL STRUCTURAL ANALYSIS OF A BARNASE-BARSTAR COMPLEX AT 2.0-A RESOLUTION Deposited 1994-03-11	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain B 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.00 Å
1BRS PROTEIN-PROTEIN RECOGNITION: CRYSTAL STRUCTURAL ANALYSIS OF A BARNASE-BARSTAR COMPLEX AT 2.0-A RESOLUTION Deposited 1994-03-11	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 3 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain C 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.00 Å
1BSA CRYSTAL STRUCTURAL ANALYSIS OF MUTATIONS IN THE HYDROPHOBIC CORES OF BARNASE Deposited 1993-07-19	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain C 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.00 Å
1BSA CRYSTAL STRUCTURAL ANALYSIS OF MUTATIONS IN THE HYDROPHOBIC CORES OF BARNASE Deposited 1993-07-19	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.00 Å
1BSA CRYSTAL STRUCTURAL ANALYSIS OF MUTATIONS IN THE HYDROPHOBIC CORES OF BARNASE Deposited 1993-07-19	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain B 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.00 Å
1BSB CRYSTAL STRUCTURAL ANALYSIS OF MUTATIONS IN THE HYDROPHOBIC CORES OF BARNASE Deposited 1993-07-19	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain C 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.00 Å
1BSB CRYSTAL STRUCTURAL ANALYSIS OF MUTATIONS IN THE HYDROPHOBIC CORES OF BARNASE Deposited 1993-07-19	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.00 Å
1BSB CRYSTAL STRUCTURAL ANALYSIS OF MUTATIONS IN THE HYDROPHOBIC CORES OF BARNASE Deposited 1993-07-19	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain B 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.00 Å
1BSC CRYSTAL STRUCTURAL ANALYSIS OF MUTATIONS IN THE HYDROPHOBIC CORES OF BARNASE Deposited 1993-07-19	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.00 Å
1BSC CRYSTAL STRUCTURAL ANALYSIS OF MUTATIONS IN THE HYDROPHOBIC CORES OF BARNASE Deposited 1993-07-19	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain B 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.00 Å
1BSC CRYSTAL STRUCTURAL ANALYSIS OF MUTATIONS IN THE HYDROPHOBIC CORES OF BARNASE Deposited 1993-07-19	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain C 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.00 Å
1BSD CRYSTAL STRUCTURAL ANALYSIS OF MUTATIONS IN THE HYDROPHOBIC CORES OF BARNASE Deposited 1993-07-19	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.30 Å
1BSD CRYSTAL STRUCTURAL ANALYSIS OF MUTATIONS IN THE HYDROPHOBIC CORES OF BARNASE Deposited 1993-07-19	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain B 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.30 Å
1BSD CRYSTAL STRUCTURAL ANALYSIS OF MUTATIONS IN THE HYDROPHOBIC CORES OF BARNASE Deposited 1993-07-19	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain C 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.30 Å
1BSE CRYSTAL STRUCTURAL ANALYSIS OF MUTATIONS IN THE HYDROPHOBIC CORES OF BARNASE Deposited 1993-07-19	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.00 Å
1BSE CRYSTAL STRUCTURAL ANALYSIS OF MUTATIONS IN THE HYDROPHOBIC CORES OF BARNASE Deposited 1993-07-19	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain B 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.00 Å
1BSE CRYSTAL STRUCTURAL ANALYSIS OF MUTATIONS IN THE HYDROPHOBIC CORES OF BARNASE Deposited 1993-07-19	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain C 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.00 Å
1FW7 NMR STRUCTURE OF 15N-LABELED BARNASE Deposited 2000-09-22	Different mutation/modification Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 48–157（110 aa）	Not recorded	No recorded non-water small molecule	SOLUTION NMR NMR measurement conditions pH 6.5；303 K；Ionic strength (raw mmCIF value) 0.04；Pressure 1 NMR sample composition 15N-labeled barnase, 1mM \| 10mM potassium-phosphate buffer in 90% H20/10% D2O NMR sample composition 15N-labeled barnase, 1mM \| 10mM potassium-phosphate buffer in D2O	Resolution not provided
1RNB CRYSTAL STRUCTURE OF A BARNASE-D(GPC) COMPLEX AT 1.9 ANGSTROMS RESOLUTION Deposited 1991-03-19	Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein–DNA Monomer；Protein × 1 PDB declaration: dimeric	Chain A 48–157（110 aa）	Not recorded	SO4 SULFATE ION × 1	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 1.90 Å
1X1U Water-mediate interaction at aprotein-protein interface Deposited 2005-04-13	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；VAPOR DIFFUSION, HANGING DROP	Resolution 2.30 Å R-free 0.270
1X1U Water-mediate interaction at aprotein-protein interface Deposited 2005-04-13	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain B 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；VAPOR DIFFUSION, HANGING DROP	Resolution 2.30 Å R-free 0.270
1X1U Water-mediate interaction at aprotein-protein interface Deposited 2005-04-13	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 3 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain C 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；VAPOR DIFFUSION, HANGING DROP	Resolution 2.30 Å R-free 0.270
1X1W Water-mediate interaction at aprotein-protein interface Deposited 2005-04-14	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；VAPOR DIFFUSION, HANGING DROP	Resolution 2.10 Å R-free 0.265
1X1W Water-mediate interaction at aprotein-protein interface Deposited 2005-04-14	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain B 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；VAPOR DIFFUSION, HANGING DROP	Resolution 2.10 Å R-free 0.265
1X1W Water-mediate interaction at aprotein-protein interface Deposited 2005-04-14	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 3 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain C 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；VAPOR DIFFUSION, HANGING DROP	Resolution 2.10 Å R-free 0.265
1X1X Water-mediate interaction at aprotein-protein interface Deposited 2005-04-15	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.30 Å R-free 0.237
1X1X Water-mediate interaction at aprotein-protein interface Deposited 2005-04-15	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain B 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.30 Å R-free 0.237
1X1X Water-mediate interaction at aprotein-protein interface Deposited 2005-04-15	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 3 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain C 48–157（110 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 2.30 Å R-free 0.237
1X1Y Water-mediate interaction at aprotein-protein interface Deposited 2005-04-15	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 48–157（110 aa）	Mutation：Q2A	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；VAPOR DIFFUSION, HANGING DROP	Resolution 1.90 Å R-free 0.250
1X1Y Water-mediate interaction at aprotein-protein interface Deposited 2005-04-15	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain B 48–157（110 aa）	Mutation：Q2A	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；VAPOR DIFFUSION, HANGING DROP	Resolution 1.90 Å R-free 0.250
1X1Y Water-mediate interaction at aprotein-protein interface Deposited 2005-04-15	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 3 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain C 48–157（110 aa）	Mutation：Q2A	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；VAPOR DIFFUSION, HANGING DROP	Resolution 1.90 Å R-free 0.250
1YVS Trimeric domain swapped barnase Deposited 1998-12-10	Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 3 PDB declaration: trimeric	Chain A 48–157（110 aa）	Not recorded	SO4 SULFATE ION × 6	X-RAY DIFFRACTION X-ray crystallization conditions pH 4.5；pH 4.5	Resolution 2.20 Å R-free 0.244
1YVS Trimeric domain swapped barnase Deposited 1998-12-10	Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein homooligomer Homooligomer；Protein × 6 PDB declaration: hexameric	Chain A 48–157（110 aa）	Not recorded	SO4 SULFATE ION × 12	X-RAY DIFFRACTION X-ray crystallization conditions pH 4.5；pH 4.5	Resolution 2.20 Å R-free 0.244
2C4B Inhibitor cystine knot protein McoEeTI fused to the catalytically inactive barnase mutant H102A Deposited 2005-10-18	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric	Chain A 49–157（109 aa）	Mutation：YES	2PE NONAETHYLENE GLYCOL × 2 GOL GLYCEROL × 1 EDO 1,2-ETHANEDIOL × 4 FMT FORMIC ACID × 2 SO4 SULFATE ION × 7 UNX UNKNOWN LIGAND × 15	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；277 K；1.3 M AMMONIUM SULPHATE, 7% PEG400 (V/V), 0.1 M MES PH 6.5 AS RESERVOIR SOLUTION. DROPLETS MIXED FROM 8 UL PROTEIN (30 MG/ML) AND 4 UL RESERVOIR. SITTING DROP VAPOR DIFFUSION. 4 DEG. C.	Resolution 1.30 Å R-free 0.164
2C4B Inhibitor cystine knot protein McoEeTI fused to the catalytically inactive barnase mutant H102A Deposited 2005-10-18	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric	Chain B 49–157（109 aa）	Mutation：YES	2PE NONAETHYLENE GLYCOL × 2 EDO 1,2-ETHANEDIOL × 6 FMT FORMIC ACID × 1 SO4 SULFATE ION × 10 MES 2-(N-MORPHOLINO)-ETHANESULFONIC ACID × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；277 K；1.3 M AMMONIUM SULPHATE, 7% PEG400 (V/V), 0.1 M MES PH 6.5 AS RESERVOIR SOLUTION. DROPLETS MIXED FROM 8 UL PROTEIN (30 MG/ML) AND 4 UL RESERVOIR. SITTING DROP VAPOR DIFFUSION. 4 DEG. C.	Resolution 1.30 Å R-free 0.164
2F4Y Barnase cross-linked with glutaraldehyde Deposited 2005-11-24	Different construct Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 50–157（108 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；300 K；AMMONIUM SULFATE, ZINC CHLORIDE, HEPES BUFFER PROTEIN AT 20MG/ML, pH 8, VAPOR DIFFUSION, HANGING DROP, temperature 300K	Resolution 2.15 Å
2F4Y Barnase cross-linked with glutaraldehyde Deposited 2005-11-24	Different construct Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain B 50–157（108 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；300 K；AMMONIUM SULFATE, ZINC CHLORIDE, HEPES BUFFER PROTEIN AT 20MG/ML, pH 8, VAPOR DIFFUSION, HANGING DROP, temperature 300K	Resolution 2.15 Å
2F4Y Barnase cross-linked with glutaraldehyde Deposited 2005-11-24	Different construct Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain C 50–157（108 aa）	Not recorded	ZN ZINC ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；300 K；AMMONIUM SULFATE, ZINC CHLORIDE, HEPES BUFFER PROTEIN AT 20MG/ML, pH 8, VAPOR DIFFUSION, HANGING DROP, temperature 300K	Resolution 2.15 Å
2F56 Barnase cross-linked with glutaraldehyde soaked in 6M urea Deposited 2005-11-25	Different construct Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 50–157（108 aa）	Not recorded	URE UREA × 3	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；300 K；AMMONIUM SULFATE, HEPES BUFFER. PROTEIN 20 MG/ML, pH 8, VAPOR DIFFUSION, HANGING DROP, temperature 300K	Resolution 1.96 Å
2F56 Barnase cross-linked with glutaraldehyde soaked in 6M urea Deposited 2005-11-25	Different construct Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain B 50–157（108 aa）	Not recorded	URE UREA × 6	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；300 K；AMMONIUM SULFATE, HEPES BUFFER. PROTEIN 20 MG/ML, pH 8, VAPOR DIFFUSION, HANGING DROP, temperature 300K	Resolution 1.96 Å
2F56 Barnase cross-linked with glutaraldehyde soaked in 6M urea Deposited 2005-11-25	Different construct Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain C 50–157（108 aa）	Not recorded	URE UREA × 2 ZN ZINC ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；300 K；AMMONIUM SULFATE, HEPES BUFFER. PROTEIN 20 MG/ML, pH 8, VAPOR DIFFUSION, HANGING DROP, temperature 300K	Resolution 1.96 Å
2F56 Barnase cross-linked with glutaraldehyde soaked in 6M urea Deposited 2005-11-25	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 4 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 50–157（108 aa） Chain C 50–157（108 aa）	Not recorded	URE UREA × 5 ZN ZINC ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；300 K；AMMONIUM SULFATE, HEPES BUFFER. PROTEIN 20 MG/ML, pH 8, VAPOR DIFFUSION, HANGING DROP, temperature 300K	Resolution 1.96 Å
2F5M Cross-linked barnase soaked in bromo-ethanol Deposited 2005-11-26	Different construct Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 50–157（108 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；300 K；FROM AMMONIUM SULFATE, PROTEIN =20 MG/ML, pH 8, VAPOR DIFFUSION, HANGING DROP, temperature 300K	Resolution 1.95 Å
2F5M Cross-linked barnase soaked in bromo-ethanol Deposited 2005-11-26	Different construct Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain B 50–157（108 aa）	Not recorded	BRJ 2-BROMOETHANOL × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；300 K；FROM AMMONIUM SULFATE, PROTEIN =20 MG/ML, pH 8, VAPOR DIFFUSION, HANGING DROP, temperature 300K	Resolution 1.95 Å
2F5M Cross-linked barnase soaked in bromo-ethanol Deposited 2005-11-26	Different construct Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain C 50–157（108 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；300 K；FROM AMMONIUM SULFATE, PROTEIN =20 MG/ML, pH 8, VAPOR DIFFUSION, HANGING DROP, temperature 300K	Resolution 1.95 Å
2F5W Cross-linked barnase soaked in 3 M thiourea Deposited 2005-11-28	Different construct Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 50–157（108 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；300 K；PROTEIN 20 MG/ML, AMMONIUM SULFATE, ZINC CHLORIDE, HEPES BUFFER, pH 8, VAPOR DIFFUSION, HANGING DROP, temperature 300K	Resolution 2.00 Å
2F5W Cross-linked barnase soaked in 3 M thiourea Deposited 2005-11-28	Different construct Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain B 50–157（108 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；300 K；PROTEIN 20 MG/ML, AMMONIUM SULFATE, ZINC CHLORIDE, HEPES BUFFER, pH 8, VAPOR DIFFUSION, HANGING DROP, temperature 300K	Resolution 2.00 Å
2F5W Cross-linked barnase soaked in 3 M thiourea Deposited 2005-11-28	Different construct Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain C 50–157（108 aa）	Not recorded	ZN ZINC ION × 1 TOU THIOUREA × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；300 K；PROTEIN 20 MG/ML, AMMONIUM SULFATE, ZINC CHLORIDE, HEPES BUFFER, pH 8, VAPOR DIFFUSION, HANGING DROP, temperature 300K	Resolution 2.00 Å
2KF3 Barnase, low pressure reference NMR structure Deposited 2009-02-11	Different mutation/modification Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 48–157（110 aa）	Mutation：H102A	No recorded non-water small molecule	SOLUTION NMR NMR measurement conditions pH 6.7；298 K；Pressure 3 NMR sample composition 1.1 mM [U-100% 13C; U-100% 15N] barnase, 30 mM sodium phosphate, 90% H2O/10% D2O \| 90% H2O/10% D2O	Resolution not provided
2KF4 Barnase high pressure structure Deposited 2009-02-11	Different mutation/modification Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 48–157（110 aa）	Mutation：H102A	No recorded non-water small molecule	SOLUTION NMR NMR measurement conditions pH 6.7；298 K；Pressure 200 NMR sample composition 1.1 mM [U-100% 13C; U-100% 15N] barnase, 30 mM sodium phosphate, 90% H2O/10% D2O \| 90% H2O/10% D2O	Resolution not provided
2KF5 Barnase bound to d(CGAC), low pressure Deposited 2009-02-11	Different mutation/modification Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 48–157（110 aa）	Mutation：H102A	No recorded non-water small molecule	SOLUTION NMR NMR measurement conditions pH 6.7；298 K；Pressure 3 NMR sample composition 1.1 mM [U-100% 13C; U-100% 15N] barnase, 30 mM sodium phosphate, 4.7 mM d(CGAC), 90% H2O/10% D2O \| 90% H2O/10% D2O	Resolution not provided
2KF6 Barnase bound to d(CGAC) high pressure Deposited 2009-02-11	Different mutation/modification Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 48–157（110 aa）	Mutation：H102A	No recorded non-water small molecule	SOLUTION NMR NMR measurement conditions pH 6.7；298 K；Pressure 200 NMR sample composition 1.1 mM [U-100% 13C; U-100% 15N] barnase, 30 mM sodium phosphate, 4.7 mM d(CGAC), 90% H2O/10% D2O \| 90% H2O/10% D2O	Resolution not provided
2ZA4 Crystal Structural Analysis of Barnase-barstar Complex Deposited 2007-10-01	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 48–157（110 aa）	Mutation：K98A	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；293 K；20% PEG 6000, 0.1M HEPES (pH 7.0), 1.0M lithium chloride, VAPOR DIFFUSION, HANGING DROP, temperature 293K	Resolution 1.58 Å R-free 0.200
2ZA4 Crystal Structural Analysis of Barnase-barstar Complex Deposited 2007-10-01	Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain C 48–157（110 aa）	Mutation：K98A	CL CHLORIDE ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；293 K；20% PEG 6000, 0.1M HEPES (pH 7.0), 1.0M lithium chloride, VAPOR DIFFUSION, HANGING DROP, temperature 293K	Resolution 1.58 Å R-free 0.200
2ZA4 Crystal Structural Analysis of Barnase-barstar Complex Deposited 2007-10-01	Different mutation/modification Different experimental conditions Different structure-quality metrics	Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 48–157（110 aa）	Mutation：K98A	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；293 K；20% PEG 6000, 0.1M HEPES (pH 7.0), 1.0M lithium chloride, VAPOR DIFFUSION, HANGING DROP, temperature 293K	Resolution 1.58 Å R-free 0.200
2ZA4 Crystal Structural Analysis of Barnase-barstar Complex Deposited 2007-10-01	Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 5 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain C 48–157（110 aa）	Mutation：K98A	CL CHLORIDE ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；293 K；20% PEG 6000, 0.1M HEPES (pH 7.0), 1.0M lithium chloride, VAPOR DIFFUSION, HANGING DROP, temperature 293K	Resolution 1.58 Å R-free 0.200
3KCH Baranase crosslinked by glutaraldehyde Deposited 2009-10-21	Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 48–157（110 aa）	Not recorded	PTD PENTANEDIAL × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；290 K；ammonium sulfate, PEG 1000, HEPES, glutaraldehyde, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 290K	Resolution 1.94 Å R-free 0.185
3KCH Baranase crosslinked by glutaraldehyde Deposited 2009-10-21	Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain B 48–157（110 aa）	Not recorded	PTD PENTANEDIAL × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；290 K；ammonium sulfate, PEG 1000, HEPES, glutaraldehyde, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 290K	Resolution 1.94 Å R-free 0.185
3KCH Baranase crosslinked by glutaraldehyde Deposited 2009-10-21	Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 3 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain C 48–157（110 aa）	Not recorded	PTD PENTANEDIAL × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；290 K；ammonium sulfate, PEG 1000, HEPES, glutaraldehyde, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 290K	Resolution 1.94 Å R-free 0.185
3Q3F Engineering Domain-Swapped Binding Interfaces by Mutually Exclusive Folding: Insertion of Ubiquitin into position 103 of Barnase Deposited 2010-12-21	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric	Chain A 48–150（103 aa） Fragment：UNP P00648 48-150 and 151-157, UNP P0CG48 residues 2-76 Chain A 151–157（7 aa） Fragment：UNP P00648 48-150 and 151-157, UNP P0CG48 residues 2-76	Not recorded	SO4 SULFATE ION × 16	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；293 K；10 mM Tris (pH 8.0), 1 M (NH4)2SO4, 1.5% isopropanol (v/v), VAPOR DIFFUSION, HANGING DROP, temperature 293K	Resolution 2.17 Å R-free 0.233
6PQK Cryogenic crystal structure of barnase A43C/S80C bound to barstar C40A/S59C/A67C/C82A Deposited 2019-07-09	Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 48–157（110 aa）	Mutation：A43C, S80C	PO4 PHOSPHATE ION × 3 EDO 1,2-ETHANEDIOL × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；298 K；50mM NaPO4 pH 6.5, 25% PEG 8K, 0.1M AmSO4 4uL protein at 10-15 mg/mL in H2O + 4uL motherliquor per hanging drop, over 1 mL motherliquor in well. cryoprotectant used before freezing was: 12.5% glycerol + 12.5% ethylene glycol	Resolution 1.20 Å R-free 0.160
6PQK Cryogenic crystal structure of barnase A43C/S80C bound to barstar C40A/S59C/A67C/C82A Deposited 2019-07-09	Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain C 48–157（110 aa）	Mutation：A43C, S80C	PO4 PHOSPHATE ION × 1 EDO 1,2-ETHANEDIOL × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；298 K；50mM NaPO4 pH 6.5, 25% PEG 8K, 0.1M AmSO4 4uL protein at 10-15 mg/mL in H2O + 4uL motherliquor per hanging drop, over 1 mL motherliquor in well. cryoprotectant used before freezing was: 12.5% glycerol + 12.5% ethylene glycol	Resolution 1.20 Å R-free 0.160
7MRX Cryogenic crystal structure of barnase A43C/S80C bound to barstar C40A/C82A Deposited 2021-05-10	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 48–157（110 aa）	Mutation：A43C, S80C	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；50mM NaPO4, 25% PEG 8K, 0.1M AmSO4 4uL protein at 10-15 mg/mL in H2O + 4uL motherliquor per hanging drop, over 1 mL motherliquor in well. cryoprotectant used before freezing was: 25% MPD	Resolution 2.29 Å R-free 0.229
7MRX Cryogenic crystal structure of barnase A43C/S80C bound to barstar C40A/C82A Deposited 2021-05-10	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain C 48–157（110 aa）	Mutation：A43C, S80C	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；50mM NaPO4, 25% PEG 8K, 0.1M AmSO4 4uL protein at 10-15 mg/mL in H2O + 4uL motherliquor per hanging drop, over 1 mL motherliquor in well. cryoprotectant used before freezing was: 25% MPD	Resolution 2.29 Å R-free 0.229
7MRX Cryogenic crystal structure of barnase A43C/S80C bound to barstar C40A/C82A Deposited 2021-05-10	Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 3 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain E 48–157（110 aa）	Mutation：A43C, S80C	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；50mM NaPO4, 25% PEG 8K, 0.1M AmSO4 4uL protein at 10-15 mg/mL in H2O + 4uL motherliquor per hanging drop, over 1 mL motherliquor in well. cryoprotectant used before freezing was: 25% MPD	Resolution 2.29 Å R-free 0.229

51 other PDB entries and 135 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	RNBR_BACAM
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–110； UniProt 48–157 Author chain B； PDBConstruct 1–110； UniProt 48–157 Author chain C； PDBConstruct 1–110； UniProt 48–157

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

SAXS scattering curve SAXS Profile

P(r) Distance Distribution P(r) Distribution

Download Download SAXS (.dat) P(r) (.pr.out) CIF

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	1b21
Deposition date deposition_date	1998-12-03
Structure title title	DELETION OF A BURIED SALT BRIDGE IN BARNASE
Keywords keywords	MICROBIAL RIBONUCLEASE, ALPHA/BETA PROTEIN, HYDROLASE; HYDROLASE
Experimental Method method	X-RAY DIFFRACTION

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3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier	25.47 Å
Radius of gyration Rg (electron density) rg_electron	24.83 Å
Forward intensity I(0) i0	23114400.00
Molecular weight molecular_weight	36552.0 kDa
Excluded volume excluded_volume	45564 Å³
Envelope volume envelope_volume	57677 Å³
Hydration-shell volume shell_volume	20491 Å³
Envelope diameter envelope_diameter	86.7 Å
Shell Rg shell_rg	30.23 Å
Envelope Rg envelope_rg	24.54 Å
Shape Rg shape_rg	24.81 Å
Total Rg total_rg	25.54 Å
Total atoms total_atoms	2588
Residues n_residues	326
Spherical-harmonic order n_harmonics	20
q range q_range	— – 0.5000 Å⁻¹
Data points n_points	101
Shell type shell_type	directional
Solvent electron density solvent_density	0.3340 e/Å³
Shell contrast contrast_shell	0.0300 e/Å³
CRYSOL version crysol_version	4.1.3

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4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax	83.4 Å
Rg (real space) rg_real	25.50 Å
Rg uncertainty (real space) rg_real_error	0.95 Å
I(0) (real space) i0_real	2.3110e+07
I(0) uncertainty (real space) i0_real_error	3.4260e+05
Rg (reciprocal space) rg_reciprocal	25.49 Å
I(0) (reciprocal space) i0_reciprocal	23110000.0000
Solution quality estimate total_estimate	0.8195
Solution quality rating solution_quality	GOOD a GOOD solution
P(r) peaks n_peaks	3
Primary peak position r_peak_primary	32.3 Å
Skewness Skewness skewness	0.269
Kurtosis Kurtosis kurtosis	-0.600
Angular range angular_range	— – 0.3100 Å⁻¹
Current regularization parameter α current_alpha	0.0000
Highest regularization parameter α highest_alpha	4369000.0000
Real-space data points n_real_points	63
GNOM version gnom_version	4.1.3
Quality Criteria quality_criteria	AN1: 0.000; Oscil: 0.910; Stabil: 0.999; Sysdev: 1.000; Positv: 1.000; Valcen: 0.922; Smooth: 0.000

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5. Crystallography and Experiment 5. Crystallography & Experiment

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6. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Description description	PROTEIN (BARNASE)
Molecular weight formula_weight	12327.6 kDa
EC 编号 ec_number	3.1.27.3
Mutation mutation	R69S, D93N
Source method src_method	man
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C
Atom count atom_count	2930

AQVINTFDGVADYLQTYHKLPDNYITKSEAQALGWVASKGNLADVAPGKSIGGDIFSNREGKLPGKSGSTWREADINYTSGFRNSDRILYSSNWLIYKTTDHYQTFTKIR

来源 Source

来源生物 organism	Bacillus amyloliquefaciens
NCBI Class编号 ncbi_taxonomy_id	1390
宿主生物 host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	ZINC ION
Molecular weight formula_weight	65.4 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	339

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7. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

Domain ID domain_id	d1b21a_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.1 — Microbial ribonucleases
Superfamily Superfamily superfamily	d.1.1 — Microbial ribonucleases
Family Family family	d.1.1.2 — Bacterial ribonucleases

Domain ID domain_id	d1b21b_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.1 — Microbial ribonucleases
Superfamily Superfamily superfamily	d.1.1 — Microbial ribonucleases
Family Family family	d.1.1.2 — Bacterial ribonucleases

Domain ID domain_id	d1b21c_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.1 — Microbial ribonucleases
Superfamily Superfamily superfamily	d.1.1 — Microbial ribonucleases
Family Family family	d.1.1.2 — Bacterial ribonucleases

CATH v4.4 (3 domains)

Domain ID domain_id	1b21A00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	450 — Nuclear Transport Factor 2; Chain: A,
Homologous superfamily homologous superfamily	30 — Microbial ribonucleases

Domain ID domain_id	1b21B00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	450 — Nuclear Transport Factor 2; Chain: A,
Homologous superfamily homologous superfamily	30 — Microbial ribonucleases

Domain ID domain_id	1b21C00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	450 — Nuclear Transport Factor 2; Chain: A,
Homologous superfamily homologous superfamily	30 — Microbial ribonucleases

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8. Citations (2)

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Unit-cell length a length_a	57.780 Å
Unit-cell length b length_b	57.780 Å
Unit-cell length c length_c	81.420 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	120.00 °
Molecules per unit cell Z z_pdb	9

Space group space_group	P 32
Space-group number int_tables_number	145
Crystal system crystal_system	—

Resolution resolution	2.000 Å
Low-resolution limit resolution_low	19.000 Å
R factor r_factor	—
R_work r_work	0.1880
R_free r_free	0.2680

fit	/app/data/saxs_computation/b2/1b21/1b21.fit
pddf	/app/data/pr_computation/b2/1b21/1b21.pr.out
profile	/app/data/saxs_computation/b2/1b21/1b21.dat