2GCH

REFINED CRYSTAL STRUCTURE OF GAMMA-CHYMOTRYPSIN AT 1.9 ANGSTROMS RESOLUTION

• PDB DOI: https://doi.org/10.2210/pdb2GCH/pdb
• Entry: 2GCH supersedes: 1GCH

• Classification: HYDROLASE (SERINE PROTEINASE)
• Organism(s): Bos taurus
• Mutation(s): No 


• Deposited: 1980-05-21 Released: 1980-07-09 
• Deposition Author(s): Cohen, G.H., Davies, D.R., Silverton, E.W.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Work: 0.181 

Literature

Refined crystal structure of gamma-chymotrypsin at 1.9 A resolution. Comparison with other pancreatic serine proteases.

Cohen, G.H., Silverton, E.W., Davies, D.R.

(1981) J Mol Biol 148: 449-479

• PubMed: 6914398 
• DOI: https://doi.org/10.1016/0022-2836(81)90186-8
• Primary Citation of Related Structures:  
  2GCH

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Hetero 6-mer - A2B2C2 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 6-mer - A2B2C1D1 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A1B1C1 

Biological assembly 2 generated by PISA,PQS (software)

Macromolecule Content

• Total Structure Weight: 25.26 kDa 
• Atom Count: 1,889 
• Modelled Residue Count: 237 
• Deposited Residue Count: 241 
• Unique protein chains: 3

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
GAMMA-CHYMOTRYPSIN A	A [auth E]	13	Bos taurus	Mutation(s): 0  EC: 3.4.21.1
UniProt
Find proteins for P00766 (Bos taurus) Explore P00766  Go to UniProtKB:  P00766

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
GAMMA-CHYMOTRYPSIN A	B [auth F]	131	Bos taurus	Mutation(s): 0  EC: 3.4.21.1
UniProt
Find proteins for P00766 (Bos taurus) Explore P00766  Go to UniProtKB:  P00766

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
GAMMA-CHYMOTRYPSIN A	C [auth G]	97	Bos taurus	Mutation(s): 0  EC: 3.4.21.1
UniProt
Find proteins for P00766 (Bos taurus) Explore P00766  Go to UniProtKB:  P00766

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Work: 0.181 
• Space Group: P 4₂ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 69.6	α = 90
b = 69.6	β = 90
c = 97.4	γ = 90

Software Package:

Software Name	Purpose
PROLSQ	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 1980-07-09 
Deposition Author(s): Cohen, G.H., Davies, D.R., Silverton, E.W.
• This entry supersedes: 1GCH

Revision History  

• Version 1.0: 1980-07-09
  Type: Initial release
  
• Version 1.1: 2008-03-03
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Version format compliance
• Version 2.0: 2024-06-05
  Changes: Atomic model, Data collection, Database references, Other
• Version 2.1: 2024-11-20
  Changes: Structure summary