3HP4

Crystal structure of psychrotrophic esterase EstA from Pseudoalteromonas sp. 643A inhibited by monoethylphosphonate


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.35 Å
  • R-Value Free: 0.189 
  • R-Value Work: 0.172 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of EstA esterase from psychrotrophic Pseudoalteromonas sp. 643A covalently inhibited by monoethylphosphonate.

Brzuszkiewicz, A.Nowak, E.Dauter, Z.Dauter, M.Cieslinski, H.Dlugolecka, A.Kur, J.

(2009) Acta Crystallogr.,Sect.F 65: 862-865

  • DOI: 10.1107/S1744309109030826

  • PubMed Abstract: 
  • The crystal structure of the esterase EstA from the cold-adapted bacterium Pseudoalteromonas sp. 643A was determined in a covalently inhibited form at a resolution of 1.35 A. The enzyme has a typical SGNH hydrolase structure consisting of a single do ...

    The crystal structure of the esterase EstA from the cold-adapted bacterium Pseudoalteromonas sp. 643A was determined in a covalently inhibited form at a resolution of 1.35 A. The enzyme has a typical SGNH hydrolase structure consisting of a single domain containing a five-stranded beta-sheet, with three helices at the convex side and two helices at the concave side of the sheet, and is ornamented with a couple of very short helices at the domain edges. The active site is located in a groove and contains the classic catalytic triad of Ser, His and Asp. In the structure of the crystal soaked in diethyl p-nitrophenyl phosphate (DNP), the catalytic serine is covalently connected to a phosphonate moiety that clearly has only one ethyl group. This is the only example in the Protein Data Bank of a DNP-inhibited enzyme with covalently bound monoethylphosphate.


    Organizational Affiliation

    Synchrotron Radiation Research Section, MCL, National Cancer Institute, Argonne National Laboratory, Argonne, IL 60439, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GDSL-esterase
A
185Pseudoalteromonas sp. 643AMutation(s): 0 
Gene Names: estA
Find proteins for Q1G1I7 (Pseudoalteromonas sp. 643A)
Go to UniProtKB:  Q1G1I7
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MIR
Query on MIR
A
L-PEPTIDE LINKINGC5 H12 N O6 PSER
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.35 Å
  • R-Value Free: 0.189 
  • R-Value Work: 0.172 
  • Space Group: P 61 2 2
Unit Cell:
Length (Å)Angle (°)
a = 83.820α = 90.00
b = 83.820β = 90.00
c = 130.950γ = 120.00
Software Package:
Software NamePurpose
SERGUIdata collection
PDB_EXTRACTdata extraction
HKL-2000data reduction
SCALEPACKdata scaling
REFMACrefinement
DENZOdata reduction
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-06-30
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Source and taxonomy, Version format compliance
  • Version 1.2: 2017-11-01
    Type: Refinement description