1ESE

THE MOLECULAR MECHANISM OF ENANTIORECOGNITION BY ESTERASES


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Observed: 0.166 

wwPDB Validation   3D Report Full Report


This is version 1.2 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:  
    1ESC, 1ESD, 1ESE

  • 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 and unique among all known hydrolases ...

    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.


    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)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ESTERASEA306Streptomyces scabieiMutation(s): 0 
Gene Names: estA
EC: 3.1.1
UniProt
Find proteins for P22266 (Streptomyces scabiei)
Explore P22266 
Go to UniProtKB:  P22266
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP22266
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
DEP
Query on DEP

Download Ideal Coordinates CCD File 
B [auth A]DIETHYL PHOSPHONATE
C4 H11 O3 P
MJUJXFBTEFXVKU-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Observed: 0.166 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 130.39α = 90
b = 48.52β = 117.74
c = 70.19γ = 90
Software Package:
Software NamePurpose
PROLSQrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • 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