3GCH

CHEMISTRY OF CAGED ENZYMES. BINDING OF PHOTOREVERSIBLE CINNAMATES TO CHYMOTRYPSIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å

wwPDB Validation 3D Report Full Report


This is version 1.2 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

  • Primary Citation of Related Structures:  

  • 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 bindi ...

    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.


    Related Citations: 
    • Structure of Chymotrypsin-Trifluoromethyl Ketone Inhibitor Complexes: Comparison of Slowly and Rapidly Equilibrating Inhibitors
      Brady, K.,Wei, A.,Ringe, D.,Abeles, R.H.
      (1990) Biochemistry 29: 7600
    • Inhibition of Chymotrypsin by Peptidyl Trifluoromethyl Ketones: Determinants of Slow-Binding Kinetics
      Brady, K.,Abeles, R.H.
      (1990) Biochemistry 29: 7608
    • Photolysis and Deacylation of Inhibited Chymotrypsin
      Stoddard, B.L.,Bruhnke, J.,Koenig, P.,Porter, N.,Ringe, D.,Petsko, G.A.
      (1990) Biochemistry 29: 8042
    • Ph Dependence of the Inhibition of Chymotrypsin by a Peptidyl Trifluoromethyl Ketone
      Brady, K.,Liang, T.-C.,Abeles, R.H.
      (1989) Biochemistry 28: 9066


    Organizational Affiliation

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




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GAMMA-CHYMOTRYPSIN
A
13Bos taurusMutation(s): 0 
EC: 3.4.21.1
Find proteins for P00766 (Bos taurus)
Go to UniProtKB:  P00766
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
GAMMA-CHYMOTRYPSIN
B
131Bos taurusMutation(s): 0 
EC: 3.4.21.1
Find proteins for P00766 (Bos taurus)
Go to UniProtKB:  P00766
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
GAMMA-CHYMOTRYPSIN
C
97Bos taurusMutation(s): 0 
EC: 3.4.21.1
Find proteins for P00766 (Bos taurus)
Go to UniProtKB:  P00766
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
OAC
Query on OAC

Download SDF File 
Download CCD File 
C
TRANS-O-HYDROXY-ALPHA-METHYL CINNAMATE
C10 H12 O3
HGNFDPZASRDVLL-SSDOTTSWSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • Space Group: P 42 21 2
Unit Cell:
Length (Å)Angle (°)
a = 69.700α = 90.00
b = 69.700β = 90.00
c = 97.500γ = 90.00
Software Package:
Software NamePurpose
PROLSQrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1990-10-15
    Type: Initial release
  • Version 1.1: 2008-03-07
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance