1ESC

THE MOLECULAR MECHANISM OF ENANTIORECOGNITION BY ESTERASES


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Work: 0.166 
  • R-Value Observed: 0.166 

wwPDB Validation 3D Report Full Report


This is version 1.5 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 Biol 2: 218-223

  • DOI: 10.1038/nsb0395-218
  • Primary Citation of Related Structures:  
    1ESE, 1ESD, 1ESC

  • 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:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ESTERASEA306Streptomyces scabieiMutation(s): 0 
Gene Names: estA
EC: 3.1.1
Find proteins for P22266 (Streptomyces scabiei)
Explore P22266 
Go to UniProtKB:  P22266
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Work: 0.166 
  • R-Value Observed: 0.166 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 131.025α = 90
b = 48.501β = 118.09
c = 70.307γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
PROLSQrefinement
X-PLORrefinement
X-PLORphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1995-10-15
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2018-06-06
    Changes: Advisory, Data collection, Derived calculations, Other
  • Version 1.4: 2019-07-17
    Changes: Data collection, Derived calculations, Refinement description
  • Version 1.5: 2019-08-14
    Changes: Data collection, Refinement description