1ESC

THE MOLECULAR MECHANISM OF ENANTIORECOGNITION BY ESTERASES


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Work: 0.166 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

A novel variant of the catalytic triad in the Streptomyces scabies esterase.

Wei, Y.Schottel, J.L.Derewenda, U.Swenson, L.Patkar, S.Derewenda, Z.S.

(1995) Nat.Struct.Mol.Biol. 2: 218-223

  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The crystal structure of a novel esterase from Streptomyces scabies, a causal agent of the potato scab disease, was solved at 2.1 A resolution. The tertiary fold of the enzyme is substantially different from that of the alpha/beta hydrolase family an ...

    The crystal structure of a novel esterase from Streptomyces scabies, a causal agent of the potato scab disease, was solved at 2.1 A resolution. The tertiary fold of the enzyme is substantially different from that of the alpha/beta hydrolase family and unique among all known hydrolases. The active site contains a dyad of Ser 14 and His 283, closely resembling two of the three components of typical Ser-His-Asp(Glu) triads from other serine hydrolases. Proper orientation of the active site imidazol is maintained by a hydrogen bond between the N delta-H group and a main chain oxygen. Thus, the enzyme constitutes the first known natural variation of the chymotrypsin-like triad in which a carboxylic acid is replaced by a neutral hydrogen-bond acceptor.


    Related Citations: 
    • Crystal Structure of the Streptomyces Scabies Esterase: Reassessment of the Chymotrypsin Paradigm
      Wei, Y.,Schottel, J.L.,Derewenda, U.,Swenson, L.,Patkar, S.,Derewenda, Z.S.
      () TO BE PUBLISHED --: --


    Organizational Affiliation

    Medical Research Council of Canada Group in Protein Structure and Function, Department of Biochemistry, University of Alberta, Edmonton.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ESTERASE
A
306Streptomyces scabieiMutation(s): 0 
Gene Names: estA
EC: 3.1.1.-
Find proteins for P22266 (Streptomyces scabiei)
Go to UniProtKB:  P22266
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Work: 0.166 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 131.025α = 90.00
b = 48.501β = 118.09
c = 70.307γ = 90.00
Software Package:
Software NamePurpose
X-PLORrefinement
PROLSQrefinement
X-PLORphasing
X-PLORmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1995-10-15
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2018-06-06
    Type: Advisory, Data collection, Derived calculations, Other