9PTI | pdb_00009pti

BASIC PANCREATIC TRYPSIN INHIBITOR (MET 52 OXIDIZED)

• PDB DOI: https://doi.org/10.2210/pdb9PTI/pdb

• Classification: HYDROLASE INHIBITOR
• Organism(s): Bos taurus
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 1991-04-08 Released: 1992-04-15 
• Deposition Author(s): Eigenbrot, C., Randal, M., Kossiakoff, A.A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.22 Å
• R-Value Work: 
  0.169 (Depositor), 0.178 (DCC) 
• R-Value Observed: 
  0.169 (Depositor) 

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 6.64 kDa 
• Atom Count: 578 
• Modeled Residue Count: 58 
• Deposited Residue Count: 58 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
BOVINE PANCREATIC TRYPSIN INHIBITOR	A	58	Bos taurus	Mutation(s): 0
UniProt
Find proteins for P00974 (Bos taurus) Explore P00974  Go to UniProtKB:  P00974

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
PO4	B [auth A]	PHOSPHATE ION O4 P NBIIXXVUZAFLBC-UHFFFAOYSA-K

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MHO	A	L-PEPTIDE LINKING	C5 H11 N O3 S		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.22 Å
• R-Value Work:  0.169 (Depositor), 0.178 (DCC) 
• R-Value Observed: 0.169 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 74.44	α = 90
b = 23.44	β = 90
c = 28.85	γ = 90

Software Package:

Software Name	Purpose
PROLSQ	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 1992-04-15 
Deposition Author(s): Eigenbrot, C., Randal, M., Kossiakoff, A.A.

Revision History  

• Version 1.0: 1992-04-15
  Type: Initial release
  
• Version 1.1: 2008-03-25
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-11-29
  Changes: Derived calculations, Other
• Version 1.4: 2025-03-26
  Changes: Data collection, Database references, Derived calculations, Structure summary