2HEX

DECAMERS OBSERVED IN THE CRYSTALS OF BOVINE PANCREATIC TRYPSIN INHIBITOR

• PDB DOI:  https://doi.org/10.2210/pdb2HEX/pdb

• Classification: BLOOD CLOTTING
• Organism(s): Bos taurus
• Mutation(s): No 


• Deposited: 1998-08-01 Released: 1999-08-05 
• Deposition Author(s): Lubkowski, J., Wlodawer, A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.288 
• R-Value Observed: 0.207 

Literature

Decamers observed in the crystals of bovine pancreatic trypsin inhibitor.

Lubkowski, J., Wlodawer, A.

(1999) Acta Crystallogr D Biol Crystallogr 55: 335-337

• PubMed: 10089443 
• DOI: https://doi.org/10.1107/S0907444998011068
• Primary Citation of Related Structures:  
  2HEX


• PubMed Abstract: 
  

  The structure of bovine pancreatic trypsin inhibitor (BPTI) has been solved at 2.1 A resolution in a new crystal form (space group P6422 with unit-cell dimensions a = b = 95.0, c = 158.1 A). The asymmetric unit is a pentamer, but a decamer is created by application of crystallographic symmetry. The decamer of BPTI is only the fourth such assembly reported to date in the Protein Data Bank.

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Organizational Affiliation: 

Macromolecular Structure Laboratory, ABL-Basic Research Program, Frederick Cancer Research and Development Center, National Cancer Institute, Frederick, MD 21702, USA.

Biological Assembly 1  

Global Symmetry: Cyclic - C5  (Explore in 3D)
Global Stoichiometry: Homo 5-mer - A5 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

Global Symmetry: Dihedral - D5  (Explore in 3D)
Global Stoichiometry: Homo 10-mer - A10 

Biological assembly 2 generated by PISA,PQS (software)

Macromolecule Content

• Total Structure Weight: 33.41 kDa 
• Atom Count: 2,466 
• Modelled Residue Count: 281 
• Deposited Residue Count: 290 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PROTEIN (PANCREATIC TRYPSIN INHIBITOR)	A, B, C, D, E	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
SO4	F [auth A], G [auth A], H [auth B], I [auth B], J [auth C], K [auth C], L [auth D], M [auth E]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.288 
• R-Value Observed: 0.207 
• Space Group: P 6₄ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 94.995	α = 90
b = 94.995	β = 90
c = 158.103	γ = 120

Software Package:

Software Name	Purpose
HKL-2000	data collection
HKL-2000	data reduction
AMoRE	phasing
SHELXL-97	refinement
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 1999-08-05 
Deposition Author(s): Lubkowski, J., Wlodawer, A.

Revision History  

• Version 1.0: 1999-08-05
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Version format compliance
• Version 1.3: 2023-08-30
  Changes: Data collection, Database references, Derived calculations, Refinement description