SAXSdb — 4sgb

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

SERINE PROTEINASE B

Streptomyces griseus

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 heterocomplex Heteromer Protein × 2 PDB declaration: dimeric（2） Consistent with protein copy count	Chain E； UniProt 115–299	Not recorded	POTATO INHIBITOR, PCI-1 × 1 （P01080） SO4 SULFATE ION × 2 CA CALCIUM ION × 1	X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions	Resolution 2.10 Å

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 4SGB	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
1CSO CRYSTAL STRUCTURE OF THE OMTKY3 P1 VARIANT OMTKY3-ILE18I IN COMPLEX WITH SGPB Deposited 1999-08-18	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain E 115–299（185 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.8；298 K；PEG 4000 sodium potassium phosphate, pH 6.8, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 1.90 Å
1CT0 CRYSTAL STRUCTURE OF THE OMTKY3 P1 VARIANT OMTKY3-SER18I IN COMPLEX WITH SGPB Deposited 1999-08-18	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain E 115–299（185 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.4；298 K；PEG 4000 sodium potassium phosphate, pH 7.4, VAPOR DIFFUSION, HANGING DROP, temperature 298.0K	Resolution 1.80 Å
1CT2 CRYSTAL STRUCTURE OF THE OMTKY3 P1 VARIANT OMTKY3-THR18I IN COMPLEX WITH SGPB Deposited 1999-08-18	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain E 115–299（185 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.4；298 K；PEG 4000 sodium potassium phosphate , pH 7.4, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 1.65 Å
1CT4 CRYSTAL STRUCTURE OF THE OMTKY3 P1 VARIANT OMTKY3-VAL18I IN COMPLEX WITH SGPB Deposited 1999-08-18	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain E 115–299（185 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.1；298 K；PEG 4000 sodium potassium phosphate, pH 7.1, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 1.60 Å
1DS2 CRYSTAL STRUCTURE OF SGPB:OMTKY3-COO-LEU18I Deposited 2000-01-06	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain E 115–299（185 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.1；298 K；PEG 4000, sodium potassium phosphate, pH 7.1, VAPOR DIFFUSION, HANGING DROP, temperature 298.0K	Resolution 1.70 Å
1SGD ASP 18 VARIANT OF TURKEY OVOMUCOID INHIBITOR THIRD DOMAIN COMPLEXED WITH STREPTOMYCES GRISEUS PROTEINASE B AT PH 6.5 Deposited 1999-03-25	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain E 115–299（185 aa）	Not recorded	PO4 PHOSPHATE ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions pH 6.5；0.4M SODIUM/POTASSIUM PHOSPHATE BUFFER AT PH 6.5	Resolution 1.80 Å
1SGE GLU 18 VARIANT OF TURKEY OVOMUCOID INHIBITOR THIRD DOMAIN COMPLEXED WITH STREPTOMYCES GRISEUS PROTEINASE B AT PH 6.5 Deposited 1999-03-25	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain E 115–299（185 aa）	Not recorded	PO4 PHOSPHATE ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions pH 6.5；0.4 M SODIUM/POTASSIUM PHOSPHATE buffer AT PH 6.5	Resolution 1.80 Å
1SGN ASN 18 VARIANT OF TURKEY OVOMUCOID INHIBITOR THIRD DOMAIN COMPLEXED WITH STREPTOMYCES GRISEUS PROTEINASE B Deposited 1999-03-25	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain E 115–299（185 aa）	Not recorded	PO4 PHOSPHATE ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions pH 6.5；2% PEG 6000, 50MM SODIUM/POTASSIUM PHOSPHATE BUFFER AT PH 6.5, pH 6.50	Resolution 1.80 Å
1SGP ALA 18 VARIANT OF TURKEY OVOMUCOID INHIBITOR THIRD DOMAIN COMPLEXED WITH STREPTOMYCES GRISEUS PROTEINASE B Deposited 1995-05-26	Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain E 115–299（185 aa）	Not recorded	PO4 PHOSPHATE ION × 1	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 1.40 Å
1SGQ GLY 18 VARIANT OF TURKEY OVOMUCOID INHIBITOR THIRD DOMAIN COMPLEXED WITH STREPTOMYCES GRISEUS PROTEINASE B Deposited 1995-05-26	Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain E 115–299（185 aa）	Not recorded	PO4 PHOSPHATE ION × 1	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 1.90 Å
1SGR LEU 18 VARIANT OF TURKEY OVOMUCOID INHIBITOR THIRD DOMAIN COMPLEXED WITH STREPTOMYCES GRISEUS PROTEINASE B Deposited 1995-05-26	Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain E 115–299（185 aa）	Not recorded	PO4 PHOSPHATE ION × 1	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 1.80 Å
1SGY TYR 18 VARIANT OF TURKEY OVOMUCOID INHIBITOR THIRD DOMAIN COMPLEXED WITH STREPTOMYCES GRISEUS PROTEINASE B AT PH 6.5 Deposited 1999-03-25	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain E 115–299（185 aa）	Not recorded	PO4 PHOSPHATE ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions pH 6.5；0.4 M SODIUM/POTASSIUM PHOSPHATE buffer AT PH 6.5	Resolution 1.80 Å
2GKV Crystal structure of the SGPB:P14'-Ala32 OMTKY3-del(1-5) complex Deposited 2006-04-03	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain E 115–299（185 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；298 K；0.2M Na acetate trihydrate, 0.1M Tris-HCl pH 8.5, 26% w/v PEG 4000, VAPOR DIFFUSION, HANGING DROP, temperature 298.0K	Resolution 1.70 Å R-free 0.248
2NU0 Molecular structures of the complexes of SGPB with OMTKY3 aromatic P1 variants Trp18I, His18I, Phe18I, and Tyr18I Deposited 2006-11-08	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain E 115–299（185 aa） Fragment：residues 115-299	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.1；298 K；PEG 4000, SODIUM POTASSIUM PHOSPHATE, pH 7.1, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 1.95 Å
2NU1 Molecular structures of the complexes of SGPB with OMTKY3 aromatic P1 variants Trp18I, His18I, Phe18I and Tyr18I Deposited 2006-11-08	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain E 115–299（185 aa） Fragment：residues 115-299	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.1；298 K；PEG 4000, SODIUM POTASSIUM PHOSPHATE, pH 7.1, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 1.80 Å
2NU2 Accommodation of positively-charged residues in a hydrophobic specificity pocket: Crystal structures of SGPB in complex with OMTKY3 variants Lys18I and Arg18I Deposited 2006-11-08	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain E 115–299（185 aa） Fragment：residues 115-299	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.1；298 K；PEG 4000, SODIUM POTASSIUM PHOSPHATE, pH 7.1, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 1.65 Å
2NU3 Accommodation of positively-charged residues in a hydrophobic specificity pocket: Crystal structures of SGPB in complex with OMTKY3 variants Lys18I and Arg18I Deposited 2006-11-08	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain E 115–299（185 aa） Fragment：residues 115-299	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.1；298 K；PEG 4000, SODIUM POTASSIUM PHOSPHATE, pH 7.1, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 1.80 Å
2NU4 Accommodation of positively-charged residues in a hydrophobic specificity pocket: Crystal structures of SGPB in complex with OMTKY3 variants Lys18I and Arg18I Deposited 2006-11-08	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain E 115–299（185 aa） Fragment：residues 115-299	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；298 K；PEG 4000, SODIUM POTASSIUM PHOSPHATE at pH 7.1 24h before data collection, crystal was transferred to PEG4000, NaKHPO4 at pH 10.7, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 1.75 Å
2QA9 Crystal structure of the second tetrahedral intermediates of SGPB at pH 4.2 Deposited 2007-06-14	Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain E 115–299（185 aa）	Not recorded	CL CHLORIDE ION × 4 SO4 SULFATE ION × 4 EDO 1,2-ETHANEDIOL × 8 GOL GLYCEROL × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.2；298 K；10 mg/mL SGPB in 10 mM MgCl2 0.7 M KH2PO4 pH 4.2, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 1.18 Å R-free 0.182
2QA9 Crystal structure of the second tetrahedral intermediates of SGPB at pH 4.2 Deposited 2007-06-14	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain E 115–299（185 aa）	Not recorded	CL CHLORIDE ION × 2 SO4 SULFATE ION × 2 EDO 1,2-ETHANEDIOL × 4 GOL GLYCEROL × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.2；298 K；10 mg/mL SGPB in 10 mM MgCl2 0.7 M KH2PO4 pH 4.2, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 1.18 Å R-free 0.182
2QAA Crystal structure of the second tetrahedral intermediates of SGPB at pH 7.3 Deposited 2007-06-14	Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 115–299（185 aa）	Not recorded	SO4 SULFATE ION × 2 CL CHLORIDE ION × 4 TYR TYROSINE × 1 LEU LEUCINE × 1 EDO 1,2-ETHANEDIOL × 3 EPE 4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID × 1 GOL GLYCEROL × 1 ACY ACETIC ACID × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.3；298 K；10 mg/mL SGPB in 10 mM MgCl2 1.0 M Li2SO4, 0.1 M HEPES-NaOH pH 7.3, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 1.23 Å R-free 0.127
2QAA Crystal structure of the second tetrahedral intermediates of SGPB at pH 7.3 Deposited 2007-06-14	Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain B 115–299（185 aa）	Not recorded	SO4 SULFATE ION × 3 CL CHLORIDE ION × 6 TYR TYROSINE × 1 LEU LEUCINE × 1 EDO 1,2-ETHANEDIOL × 1 GOL GLYCEROL × 3 ACY ACETIC ACID × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.3；298 K；10 mg/mL SGPB in 10 mM MgCl2 1.0 M Li2SO4, 0.1 M HEPES-NaOH pH 7.3, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 1.23 Å R-free 0.127
2QAA Crystal structure of the second tetrahedral intermediates of SGPB at pH 7.3 Deposited 2007-06-14	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 3 Protein homooligomer Homooligomer；Protein × 24 PDB declaration: 24-meric	Chain A 115–299（185 aa） Chain B 115–299（185 aa）	Not recorded	SO4 SULFATE ION × 60 CL CHLORIDE ION × 120 TYR TYROSINE × 24 LEU LEUCINE × 24 EDO 1,2-ETHANEDIOL × 48 EPE 4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID × 12 GOL GLYCEROL × 48 ACY ACETIC ACID × 36	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.3；298 K；10 mg/mL SGPB in 10 mM MgCl2 1.0 M Li2SO4, 0.1 M HEPES-NaOH pH 7.3, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 1.23 Å R-free 0.127
2SGD ASP 18 VARIANT OF TURKEY OVOMUCOID INHIBITOR THIRD DOMAIN COMPLEXED WITH STREPTOMYCES GRISEUS PROTEINASE B AT PH 10.7 Deposited 1999-03-25	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain E 115–299（185 aa）	Not recorded	PO4 PHOSPHATE ION × 1 K POTASSIUM ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions pH 10.7；0.4M SODIUM/POTASSIUM PHOSPHATE BUFFER AT PH 10.7	Resolution 1.80 Å
2SGE GLU 18 VARIANT OF TURKEY OVOMUCOID INHIBITOR THIRD DOMAIN COMPLEXED WITH STREPTOMYCES GRISEUS PROTEINASE B AT PH 10.7 Deposited 1999-03-25	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain E 115–299（185 aa）	Not recorded	PO4 PHOSPHATE ION × 1 K POTASSIUM ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions pH 10.7；0.4M SODIUM/POTASSIUM PHOSPHATE BUFFER AT PH 10.7	Resolution 1.80 Å
2SGF PHE 18 VARIANT OF TURKEY OVOMUCOID INHIBITOR THIRD DOMAIN COMPLEXED WITH STREPTOMYCES GRISEUS PROTEINASE B Deposited 1999-03-25	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain E 115–299（185 aa）	Not recorded	PO4 PHOSPHATE ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions pH 6.5；0.4 M SODIUM/POTASSIUM PHOSPHATE AT PH 6.5	Resolution 1.75 Å
2SGP PRO 18 VARIANT OF TURKEY OVOMUCOID INHIBITOR THIRD DOMAIN COMPLEXED WITH STREPTOMYCES GRISEUS PROTEINASE B AT PH 6.5 Deposited 1999-03-25	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain E 115–299（185 aa）	Not recorded	PO4 PHOSPHATE ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions pH 6.5；0.4 M SODIUM/POTASSIUM PHOSPHATE BUFFER AT PH 6.5, pH 6.50	Resolution 1.80 Å
2SGQ GLN 18 VARIANT OF TURKEY OVOMUCOID INHIBITOR THIRD DOMAIN COMPLEXED WITH STREPTOMYCES GRISEUS PROTEINASE B AT PH 6.5 Deposited 1999-03-25	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain E 115–299（185 aa）	Not recorded	PO4 PHOSPHATE ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions pH 6.5；0.4 M SODIUM/POTASSIUM PHOSPHATE buffer AT PH 6.5	Resolution 1.80 Å
3SGB STRUCTURE OF THE COMPLEX OF STREPTOMYCES GRISEUS PROTEASE B AND THE THIRD DOMAIN OF THE TURKEY OVOMUCOID INHIBITOR AT 1.8 ANGSTROMS RESOLUTION Deposited 1983-01-21	Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain E 115–299（185 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION mmCIF provides none of the parsed conditions	Resolution 1.80 Å
3SGQ GLN 18 VARIANT OF TURKEY OVOMUCOID INHIBITOR THIRD DOMAIN COMPLEXED WITH STREPTOMYCES GRISEUS PROTEINASE B AT PH 10.7 Deposited 1999-03-25	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain E 115–299（185 aa）	Not recorded	PO4 PHOSPHATE ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions pH 10.7；0.4 M SODIUM/POTASSIUM PHOSPHATE buffer AT PH 10.7	Resolution 1.80 Å

27 other PDB entries and 30 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	PRTB_STRGR
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain E； PDBConstruct 1–185； UniProt 115–299

POTATO INHIBITOR, PCI-1

OrganismNot specified

UniProt P01080

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 heterocomplex Heteromer Protein × 2 PDB declaration: dimeric（2） Consistent with protein copy count	Chain I； UniProt 55–105	Not recorded	SERINE PROTEINASE B × 1 （P00777） SO4 SULFATE ION × 2 CA CALCIUM ION × 1	X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions	Resolution 2.10 Å

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.

No other PDB entry for the same UniProt protein was found.

View Construct and Data Evidence

UniProt name	IP2K_SOLTU
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain I； PDBConstruct 1–51； UniProt 55–105

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.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	4sgb
Deposition date deposition_date	1989-09-21
Structure title title	STRUCTURE OF THE COMPLEX OF STREPTOMYCES GRISEUS PROTEINASE B AND POLYPEPTIDE CHYMOTRYPSIN INHIBITOR-1 FROM RUSSET BURBANK POTATO TUBERS AT 2.1 ANGSTROMS RESOLUTION
Keywords keywords	COMPLEX(SERINE PROTEINASE-INHIBITOR); COMPLEX(SERINE PROTEINASE-INHIBITOR)
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	17.69 Å
Radius of gyration Rg (electron density) rg_electron	16.92 Å
Forward intensity I(0) i0	12459000.00
Molecular weight molecular_weight	24392.0 kDa
Excluded volume excluded_volume	29635 Å³
Envelope volume envelope_volume	33389 Å³
Hydration-shell volume shell_volume	16572 Å³
Envelope diameter envelope_diameter	62.8 Å
Shell Rg shell_rg	23.14 Å
Envelope Rg envelope_rg	17.35 Å
Shape Rg shape_rg	16.91 Å
Total Rg total_rg	17.87 Å
Total atoms total_atoms	1701
Residues n_residues	220
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	61.5 Å
Rg (real space) rg_real	17.62 Å
Rg uncertainty (real space) rg_real_error	0.47 Å
I(0) (real space) i0_real	1.2460e+07
I(0) uncertainty (real space) i0_real_error	1.7990e+05
Rg (reciprocal space) rg_reciprocal	17.63 Å
I(0) (reciprocal space) i0_reciprocal	12460000.0000
Solution quality estimate total_estimate	0.7748
Solution quality rating solution_quality	GOOD a GOOD solution
P(r) peaks n_peaks	3
Primary peak position r_peak_primary	22.1 Å
Skewness Skewness skewness	0.304
Kurtosis Kurtosis kurtosis	-0.167
Angular range angular_range	— – 0.4500 Å⁻¹
Current regularization parameter α current_alpha	0.0000
Highest regularization parameter α highest_alpha	3071000.0000
Real-space data points n_real_points	76
GNOM version gnom_version	4.1.3
Quality Criteria quality_criteria	AN1: 0.000; Oscil: 0.696; Stabil: 0.999; Sysdev: 1.000; Positv: 1.000; Valcen: 0.985; Smooth: 0.000

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5. Crystallography and Experiment 5. Crystallography & Experiment

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6. Entities and Polymers Entities & Polymers (5)

Entity 1 Entity 1 polymer

Description description	SERINE PROTEINASE B
Molecular weight formula_weight	18665.3 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	E
Atom count atom_count	1880

ISGGDAIYSSTGRCSLGFNVRSGSTYYFLTAGHCTDGATTWWANSARTTVLGTTSGSSFPNNDYGIVRYTNTTIPKDGTVGGQDITSAANATVGMAVTRRGSTTGTHSGSVTALNATVNYGGGDVVYGMIRTNVCAEPGDSGGPLYSGTRAIGLTSGGSGNCSSGGTTFFQPVTEALVAYGVSVY

来源 Source

来源生物 organism	Streptomyces griseus
NCBI Class编号 ncbi_taxonomy_id	1911

Entity 2 Entity 2 polymer

Description description	POTATO INHIBITOR, PCI-1
Molecular weight formula_weight	5509.3 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	I

PICTNCCAGYKGCNYYSANGAFICEGQSDPKKPKACPLNCDPHIAYSKCPR

Entity 3 Entity 3 non-polymer

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 4 Entity 4 non-polymer

Description description	CALCIUM ION
Molecular weight formula_weight	40.1 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 5 Entity 5 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	179

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7. Fold Classification (SCOP + CATH) 5 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d4sgbe_
Class class	b — All beta proteins
Fold Fold fold	b.47 — Trypsin-like serine proteases
Superfamily Superfamily superfamily	b.47.1 — Trypsin-like serine proteases
Family Family family	b.47.1.1 — Prokaryotic proteases

Domain ID domain_id	d4sgbi_
Class class	g — Small proteins
Fold Fold fold	g.69 — Plant proteinase inhibitors
Superfamily Superfamily superfamily	g.69.1 — Plant proteinase inhibitors
Family Family family	g.69.1.1 — Plant proteinase inhibitors

CATH v4.4 (3 domains)

Domain ID domain_id	4sgbE01
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	10 — Thrombin, subunit H
Homologous superfamily homologous superfamily	10 — Trypsin-like serine proteases

Domain ID domain_id	4sgbE02
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	10 — Thrombin, subunit H
Homologous superfamily homologous superfamily	10 — Trypsin-like serine proteases

Domain ID domain_id	4sgbI00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	60 — Wheat Germ Agglutinin (Isolectin 2); domain 1
Homologous superfamily homologous superfamily	30 —

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8. Citations (1)

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Unit-cell length a length_a	50.920 Å
Unit-cell length b length_b	46.200 Å
Unit-cell length c length_c	52.530 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	117.08 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	2

Space group space_group	P 1 21 1
Space-group number int_tables_number	4
Crystal system crystal_system	—

Resolution resolution	2.100 Å
Low-resolution limit resolution_low	8.000 Å
R factor r_factor	0.1420
R_work r_work	—
R_free r_free	—

fit	/app/data/saxs_computation/sg/4sgb/4sgb.fit
pddf	/app/data/pr_computation/sg/4sgb/4sgb.pr.out
profile	/app/data/saxs_computation/sg/4sgb/4sgb.dat

STRUCTURE OF THE COMPLEX OF STREPTOMYCES GRISEUS PROTEINASE B AND POLYPEPTIDE CHYMOTRYPSIN INHIBITOR-1 FROM RUSSET BURBANK POTATO TUBERS AT 2.1 ANGSTROMS RESOLUTION

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

SERINE PROTEINASE B

State in the Current Structure

Other States of the Same Protein in the Database

POTATO INHIBITOR, PCI-1

State in the Current Structure

Other States of the Same Protein in the Database

SAXS scattering curve SAXS Profile

P(r) Distance Distribution P(r) Distribution

2. Structure Basics 2. Structure Basics

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

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

5. Crystallography and Experiment 5. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

6. Entities and Polymers Entities & Polymers (5)

Entity 1 Entity 1 polymer

Polymer Polymer

来源 Source

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 water

7. Fold Classification (SCOP + CATH) 5 domains

SCOP 2.08 (2 domains)

CATH v4.4 (3 domains)

8. Citations (1)

9. Files and Curves (10)

Files (7)

Curves (3)