3GCH

CHEMISTRY OF CAGED ENZYMES. BINDING OF PHOTOREVERSIBLE CINNAMATES TO CHYMOTRYPSIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Observed: 0.203 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structure and activity of two photoreversible cinnamates bound to chymotrypsin.

Stoddard, B.L.Bruhnke, J.Porter, N.Ringe, D.Petsko, G.A.

(1990) Biochemistry 29: 4871-4879

  • DOI: https://doi.org/10.1021/bi00472a017
  • Primary Citation of Related Structures:  
    3GCH, 4GCH

  • PubMed Abstract: 

    The serine protease gamma-chymotrypsin was covalently inhibited with two different photoreversible cinnamate compounds, and the structures of the resulting complexes were determined to 1.9-A resolution. The inhibitors show different kinetics of binding, inhibition, and nonphotochemical deacylation relative to each other in solution activity assays. The crystal structures of the enzyme-cinnamate complexes show that both compounds acylate serine 195 and that the two molecules are bound in similar nonproductive conformations which have drastic effects on their ability to turn over. Substitution of a diethylamino group on the para position of the cinnamate ring causes a 1000-fold increase in the thermal stability of the inhibitor toward hydrolysis and deacylation.


  • Organizational Affiliation

    Department of Chemistry, Massachusetts Institute of Technology, Cambridge 02139.


Macromolecules

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
GAMMA-CHYMOTRYPSIN13Bos taurusMutation(s): 0 
EC: 3.4.21.1
UniProt
Find proteins for P00766 (Bos taurus)
Explore P00766 
Go to UniProtKB:  P00766
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00766
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
GAMMA-CHYMOTRYPSIN131Bos taurusMutation(s): 0 
EC: 3.4.21.1
UniProt
Find proteins for P00766 (Bos taurus)
Explore P00766 
Go to UniProtKB:  P00766
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00766
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
GAMMA-CHYMOTRYPSIN97Bos taurusMutation(s): 0 
EC: 3.4.21.1
UniProt
Find proteins for P00766 (Bos taurus)
Explore P00766 
Go to UniProtKB:  P00766
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00766
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
OAC
Query on OAC

Download Ideal Coordinates CCD File 
D [auth C]TRANS-O-HYDROXY-ALPHA-METHYL CINNAMATE
C10 H12 O3
HGNFDPZASRDVLL-SSDOTTSWSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Observed: 0.203 
  • Space Group: P 42 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 69.7α = 90
b = 69.7β = 90
c = 97.5γ = 90
Software Package:
Software NamePurpose
PROLSQrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1990-10-15
    Type: Initial release
  • Version 1.1: 2008-03-07
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.3: 2024-06-05
    Changes: Data collection, Database references, Derived calculations, Other