6pti

STRUCTURE OF FORM III CRYSTALS OF BOVINE PANCREATIC TRYPSIN INHIBITOR

Method: X-RAY DIFFRACTION Dmax: 40.4 Å Quality: GOOD

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

PANCREATIC TRYPSIN INHIBITOR PRECURSOR

Bos taurus

UniProt P00974

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 36–93 Not recorded PO4 PHOSPHATE ION × 1 X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions Resolution 1.70 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.

123 other PDB entries and 265 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name BPT1_BOVIN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–58; UniProt 36–93

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

SAXS profile for 6pti

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 6pti
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2. Structure Basics 2. Structure Basics

Entry ID entry_id6pti
Deposition date deposition_date1987-05-13
Structure title titleSTRUCTURE OF FORM III CRYSTALS OF BOVINE PANCREATIC TRYPSIN INHIBITOR
Keywords keywordsPROTEINASE INHIBITOR (TRYPSIN); PROTEINASE INHIBITOR (TRYPSIN)
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier12.06
Radius of gyration Rg (electron density) rg_electron10.94
Forward intensity I(0) i01111880.00
Molecular weight molecular_weight6488.0 kDa
Excluded volume excluded_volume7915 ų
Envelope volume envelope_volume8945 ų
Hydration-shell volume shell_volume7367 ų
Envelope diameter envelope_diameter38.0
Shell Rg shell_rg15.96
Envelope Rg envelope_rg11.38
Shape Rg shape_rg10.85
Total Rg total_rg12.47
Total atoms total_atoms450
Residues n_residues57
Spherical-harmonic order n_harmonics20
q range q_range— – 0.5000 −1
Data points n_points101
Shell type shell_typedirectional
Solvent electron density solvent_density0.3340 e/ų
Shell contrast contrast_shell0.0300 e/ų
CRYSOL version crysol_version4.1.3

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

Maximum dimension Dmax dmax40.4
Rg (real space) rg_real12.04
Rg uncertainty (real space) rg_real_error0.34
I(0) (real space) i0_real1.1120e+06
I(0) uncertainty (real space) i0_real_error1.3330e+04
Rg (reciprocal space) rg_reciprocal12.04
I(0) (reciprocal space) i0_reciprocal1112000.0000
Solution quality estimate total_estimate0.8094
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary13.3
Skewness Skewness skewness0.299
Kurtosis Kurtosis kurtosis-0.338
Angular range angular_range— – 0.5000 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha291100.0000
Real-space data points n_real_points80
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.850; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.968; Smooth: 0.000

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

7. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd6ptia_
Class classg — Small proteins
Fold Fold foldg.8 — BPTI-like
Superfamily Superfamily superfamilyg.8.1 — BPTI-like
Family Family familyg.8.1.1 — Small Kunitz-type inhibitors & BPTI-like toxins

CATH v4.4 (1 domains)

Domain ID domain_id6ptiA00
Class class4 — Few Secondary Structures
Architecture architecture10 — Irregular
Topology topology410 — Factor Xa Inhibitor
Homologous superfamily homologous superfamily10 — Pancreatic trypsin inhibitor Kunitz domain

8. Citations (4)

9. Files and Curves (10)