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Protein Structures and Oligomeric States

Enter a protein name, UniProt accession or PDB ID. Name searches ask you to confirm the protein identity before related structures are queried.

Current Protein Identity：P00669 New Search
21PDB entries
26Biological assembly
48chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification Different assembly state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics

Difference tags compare only the current result set; every original PDB and assembly record remains separate.

Related-Structure Differences

Each row represents one biological assembly in one PDB entry; multiple monomers of the same protein are listed separately.

PDB Entry Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Experimental Method Experimental Conditions Structure Quality
11BA BINDING OF A SUBSTRATE ANALOGUE TO A DOMAIN SWAPPING PROTEIN IN THE COMPLEX OF BOVINE SEMINAL RIBONUCLEASE WITH URIDYLYL-2',5'-ADENOSINE Deposited 1999-03-17 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain not uniquely mapped Reference range not declared
Chain A 27–150（124 aa）
Not recorded SO4 SULFATE ION × 3 UPA URIDYLYL-2'-5'-PHOSPHO-ADENOSINE × 2 X-RAY DIFFRACTION
X-ray crystallization conditions pH 4.8；pH 4.8
Resolution 2.06 Å
1BSR BOVINE SEMINAL RIBONUCLEASE STRUCTURE AT 1.9 ANGSTROMS RESOLUTION Deposited 1993-04-28 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 27–150（124 aa）
Chain B 27–150（124 aa）
Not recorded SO4 SULFATE ION × 7 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 1.90 Å
1BSR BOVINE SEMINAL RIBONUCLEASE STRUCTURE AT 1.9 ANGSTROMS RESOLUTION Deposited 1993-04-28 Assembly 2 Protein homooligomer Homooligomer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 27–150（124 aa）
Chain B 27–150（124 aa）
Not recorded SO4 SULFATE ION × 14 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 1.90 Å
1N1X Crystal Structure Analysis of the monomeric [S-carboxyamidomethyl-Cys31, S-carboxyamidomethyl-Cys32] Bovine seminal ribonuclease Deposited 2002-10-21 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 27–150（124 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.7；293 K；PEG 4000, TRIS-HCl, sodium acetate, acetonitrile, glycerol (cryoprotectant), pH 8.7, VAPOR DIFFUSION, SITTING DROP, temperature 293.0K
Resolution 1.45 Å R-free 0.258
1N3Z Crystal structure of the [S-carboxyamidomethyl-Cys31, S-carboxyamidomethyl-Cys32] monomeric derivative of the bovine seminal ribonuclease in the liganded state Deposited 2002-10-30 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 27–150（124 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) U3P 3'-URIDINEMONOPHOSPHATE × 1 ADN ADENOSINE × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.7；293 K；PEG 4000, sodium acetate, acetonitrile, glycerol (cryoprotectant), TRIS-HCl, pH 8.7, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 1.65 Å R-free 0.230
1QWQ Solution structure of the monomeric N67D mutant of Bovine Seminal Ribonuclease Deposited 2003-09-03 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 27–150（124 aa）
Mutation：N67D No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 5.65；300 K；Ionic strength (raw mmCIF value) 0；Pressure ambient
NMR sample composition 2.0MM MONOMERIC BOVINE SEMINAL RIBONUCLEASE U-97% 15N | 95% H2O/5% D2O
NMR sample composition 2.0MM MONOMERIC BOVINE SEMINAL RIBONUCLEASE | 95% H2O/5% D2O
Resolution not provided
1R3M Crystal structure of the dimeric unswapped form of bovine seminal ribonuclease Deposited 2003-10-02 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 27–150（124 aa）
Not recorded PO4 PHOSPHATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions EVAPORATION；pH 8.4；294 K；MPD, ammonium sulfate, pH 8.4, EVAPORATION, temperature 294K
Resolution 2.20 Å R-free 0.292
1R3M Crystal structure of the dimeric unswapped form of bovine seminal ribonuclease Deposited 2003-10-02 Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 27–150（124 aa）
Not recorded PO4 PHOSPHATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions EVAPORATION；pH 8.4；294 K；MPD, ammonium sulfate, pH 8.4, EVAPORATION, temperature 294K
Resolution 2.20 Å R-free 0.292
1R5C X-ray structure of the complex of Bovine seminal ribonuclease swapping dimer with d(CpA) Deposited 2003-10-10 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 27–150（124 aa）
Chain B 27–150（124 aa）
Not recorded CPA 2'-DEOXYCYTIDINE-2'-DEOXYADENOSINE-3',5'-MONOPHOSPHATE × 2 X-RAY DIFFRACTION
X-ray crystallization conditions MICROBATCH；pH 5.4；293 K；62-64% saturation ammonium sulfate, 8-10% 2-methyl-2,4-pentandiol, dinucleotide-protein molar ratio of 8:1, pH 5.4, MICRO-BATCH, temperature 293K
Resolution 2.10 Å R-free 0.242
1R5D X-ray structure of bovine seminal ribonuclease swapping dimer from a new crystal form Deposited 2003-10-10 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 27–150（124 aa）
Chain B 27–150（124 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；293 K；PEG 4000, 0.1 M sodium acetate, 0.1 M TRIS-HCL, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.50 Å R-free 0.255
1TQ9 Non-covalent swapped dimer of Bovine Seminal Ribonuclease in complex with 2'-DEOXYCYTIDINE-2'-DEOXYADENOSINE-3',5'-MONOPHOSPHATE Deposited 2004-06-17 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 27–150（124 aa）
Chain B 27–150（124 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) CPA 2'-DEOXYCYTIDINE-2'-DEOXYADENOSINE-3',5'-MONOPHOSPHATE × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；277 K；PEG 8000, isopropanol, sodium acetate, cacodilate, pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 277K
Resolution 2.00 Å R-free 0.269
1Y92 Crystal structure of the P19A/N67D Variant Of Bovine seminal Ribonuclease Deposited 2004-12-14 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 27–150（124 aa）
Chain B 27–150（124 aa）
Mutation：P19A, N67D Mutation：P19A, N67D No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；293 K；PEG 4000, Tris-HCl, sodium acetate, pH 8.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 2.20 Å R-free 0.202
1Y94 Crystal structure of the G16S/N17T/P19A/S20A/N67D Variant Of Bovine seminal Ribonuclease Deposited 2004-12-14 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 27–150（124 aa）
Chain B 27–150（124 aa）
Mutation：G16S, N17T, P19A, S20A, N67D Mutation：G16S, N17T, P19A, S20A, N67D No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；293 K；PEG 4000, TRIS-HCL, SODIUM ACETATE, pH 8.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 2.20 Å R-free 0.259
2LFJ Solution structure of the monomeric derivative of BS-RNase Deposited 2011-07-06 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 27–150（124 aa）
Mutation：N67D No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 5.8；300 K
NMR sample composition 1 mM [U-100% 13C; U-100% 15N] mBS, 90% H2O/10% D2O | 90% H2O/10% D2O
NMR sample composition 1 mM [U-100% 15N] mBS, 90% H2O/10% D2O | 90% H2O/10% D2O
Resolution not provided
3BCM Crystal Structure of The Unswapped Form of P19A/L28Q/N67D BS-RNase Deposited 2007-11-13 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 27–150（124 aa）
Chain B 27–150（124 aa）
Mutation：P19A, L28Q, N67D Mutation：P19A, L28Q, N67D PO4 PHOSPHATE ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.4；277 K；30% methyl pentanediol, 50mM TRIS-HCl pH 8.4, 0.1M ammonium phosphate, VAPOR DIFFUSION, SITTING DROP, temperature 277K
Resolution 2.25 Å R-free 0.252
3BCM Crystal Structure of The Unswapped Form of P19A/L28Q/N67D BS-RNase Deposited 2007-11-13 Assembly 2 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 27–150（124 aa）
Chain B 27–150（124 aa）
Mutation：P19A, L28Q, N67D Mutation：P19A, L28Q, N67D PO4 PHOSPHATE ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.4；277 K；30% methyl pentanediol, 50mM TRIS-HCl pH 8.4, 0.1M ammonium phosphate, VAPOR DIFFUSION, SITTING DROP, temperature 277K
Resolution 2.25 Å R-free 0.252
3BCO Crystal Structure of The Swapped FOrm of P19A/L28Q/N67D BS-RNase Deposited 2007-11-13 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 27–150（124 aa）
Chain B 27–150（124 aa）
Mutation：P19A, L28Q, N67D Mutation：P19A, L28Q, N67D No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；277 K；28% w/v PEG 8000, 0.2M SODIUM ACETATE, 0.1M CACODILATE pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K
Resolution 2.25 Å R-free 0.250
3BCP Crystal Structure of The Swapped non covalent form of P19A/L28Q/N67D BS-RNase Deposited 2007-11-13 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 27–150（124 aa）
Chain B 27–150（124 aa）
Mutation：P19A, L28Q, N67D Non-standard monomer：Yes (specific site not provided by mmCIF) Mutation：P19A, L28Q, N67D Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；277 K；27% w/v PEG 8000, 0.1M sodium phosphate, 0.2M calcium chloride, 0.1M cacodilate pH 5.3-5.9, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K
Resolution 2.57 Å R-free 0.323
3BCP Crystal Structure of The Swapped non covalent form of P19A/L28Q/N67D BS-RNase Deposited 2007-11-13 Assembly 2 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 27–150（124 aa）
Chain D 27–150（124 aa）
Mutation：P19A, L28Q, N67D Non-standard monomer：Yes (specific site not provided by mmCIF) Mutation：P19A, L28Q, N67D Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；277 K；27% w/v PEG 8000, 0.1M sodium phosphate, 0.2M calcium chloride, 0.1M cacodilate pH 5.3-5.9, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K
Resolution 2.57 Å R-free 0.323
3BCP Crystal Structure of The Swapped non covalent form of P19A/L28Q/N67D BS-RNase Deposited 2007-11-13 Assembly 3 Protein homooligomer Homooligomer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 27–150（124 aa）
Chain B 27–150（124 aa）
Chain C 27–150（124 aa）
Chain D 27–150（124 aa）
Mutation：P19A, L28Q, N67D Non-standard monomer：Yes (specific site not provided by mmCIF) Mutation：P19A, L28Q, N67D Non-standard monomer：Yes (specific site not provided by mmCIF) Mutation：P19A, L28Q, N67D Non-standard monomer：Yes (specific site not provided by mmCIF) Mutation：P19A, L28Q, N67D Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；277 K；27% w/v PEG 8000, 0.1M sodium phosphate, 0.2M calcium chloride, 0.1M cacodilate pH 5.3-5.9, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K
Resolution 2.57 Å R-free 0.323
3DJO Bovine Seminal Ribonuclease uridine 2' phosphate complex Deposited 2008-06-24 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 27–150（124 aa）
Chain B 27–150（124 aa）
Not recorded U2P PHOSPHORIC ACID MONO-[2-(2,4-DIOXO-3,4-DIHYDRO-2H-PYRIMIDIN-1-YL)-4-HYDROXY-5-HYDROXYMETHYL-TETRAHYDRO-FURAN-3-YL] ESTER × 2 ACT ACETATE ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；289 K；30% PEG4000, 0.1M sodium acetate, 0.1M Tris/HCl, pH8.5, VAPOR DIFFUSION, HANGING DROP, temperature 289K
Resolution 1.60 Å R-free 0.226
3DJP Bovine Seminal Ribonuclease- Uridine 3' phosphate complex Deposited 2008-06-24 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 27–150（124 aa）
Chain B 27–150（124 aa）
Not recorded UA3 URACIL ARABINOSE-3'-PHOSPHATE × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；289 K；30% PEG4000, 0.1M sodium acetate, 0.1M Tris/HCl, pH8.5, VAPOR DIFFUSION, HANGING DROP, temperature 289K
Resolution 1.60 Å R-free 0.230
3DJQ Bovine Seminal Ribonuclease- Uridine 5' diphosphate complex Deposited 2008-06-24 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 27–150（124 aa）
Chain B 27–150（124 aa）
Not recorded UDP URIDINE-5'-DIPHOSPHATE × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；289 K；30% PEG4000, 0.1M sodium acetate, 0.1 M Tris/HCl, pH8.5, VAPOR DIFFUSION, HANGING DROP, temperature 289K
Resolution 1.53 Å R-free 0.233
3DJV Bovine Seminal Ribonuclease- cytidine 3' phosphate complex Deposited 2008-06-24 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 27–150（124 aa）
Chain B 27–150（124 aa）
Not recorded C3P CYTIDINE-3'-MONOPHOSPHATE × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；289 K；30% PEG4000, 0.1M sodium acetate, 0.1M Tris/HCl, pH8.5, VAPOR DIFFUSION, HANGING DROP, temperature 289K
Resolution 1.60 Å R-free 0.204
3DJX Bovine Seminal Ribonuclease- cytidine 5' phosphate complex Deposited 2008-06-24 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 27–150（124 aa）
Chain B 27–150（124 aa）
Not recorded C5P CYTIDINE-5'-MONOPHOSPHATE × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；289 K；30% PEG4000, 0.1M sodium acetate, 0.1M Tris/HCl, pH8.5, VAPOR DIFFUSION, HANGING DROP, temperature 289K
Resolution 1.69 Å R-free 0.204
4N4C Crystal structure of the C-terminal swapped dimer of a Bovine seminal ribonuclease mutant Deposited 2013-10-08 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 27–150（124 aa） Fragment：UNP residues 27-150
Chain B 27–150（124 aa） Fragment：UNP residues 27-150
Mutation：G16S, N17T, P19A, S20A Non-standard monomer：Yes (specific site not provided by mmCIF) Mutation：G16S, N17T, P19A, S20A Non-standard monomer：Yes (specific site not provided by mmCIF) PO4 PHOSPHATE ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 6；293 K；16-20% w/v PEG35K, 0.2 M lithium chloride, 0.1 M sodium cacodylate buffer, pH 6.0, 3% v/v acetonitrile, VAPOR DIFFUSION, temperature 293K
Resolution 2.48 Å R-free 0.186

This page presents structural evidence recorded in PDB/mmCIF.“No recorded non-water small molecule” does not prove that the experimental sample was ligand-free; experimental conditions belong to the PDB experiment, while ligands and copy counts are shown for each biological assembly.