4QLO

Crystal Structure of homoserine o-acetyltransferase from Staphylococcus aureus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.291 
  • R-Value Work: 0.240 
  • R-Value Observed: 0.242 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structure of homoserine O-acetyltransferase from Staphylococcus aureus: the first Gram-positive ortholog structure.

Thangavelu, B.Pavlovsky, A.G.Viola, R.

(2014) Acta Crystallogr Sect F Struct Biol Cryst Commun 70: 1340-1345

  • DOI: 10.1107/S2053230X14018664
  • Primary Citation of Related Structures:  
    4QLO

  • PubMed Abstract: 
  • Homoserine O-acetyltransferase (HTA) catalyzes the formation of L-O-acetyl-homoserine from L-homoserine through the transfer of an acetyl group from acetyl-CoA. This is the first committed step required for the biosynthesis of methionine in many fungi, Gram-positive bacteria and some Gram-negative bacteria ...

    Homoserine O-acetyltransferase (HTA) catalyzes the formation of L-O-acetyl-homoserine from L-homoserine through the transfer of an acetyl group from acetyl-CoA. This is the first committed step required for the biosynthesis of methionine in many fungi, Gram-positive bacteria and some Gram-negative bacteria. The structure of HTA from Staphylococcus aureus (SaHTA) has been determined to a resolution of 2.45 Å. The structure belongs to the α/β-hydrolase superfamily, consisting of two distinct domains: a core α/β-domain containing the catalytic site and a lid domain assembled into a helical bundle. The active site consists of a classical catalytic triad located at the end of a deep tunnel. Structure analysis revealed some important differences for SaHTA compared with the few known structures of HTA.


    Organizational Affiliation

    Department of Chemistry and Biochemistry, The University of Toledo, Toledo, OH 43606, USA.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
homoserine O-acetyltransferaseA360Staphylococcus aureus subsp. aureus USA300_TCH1516Mutation(s): 0 
Gene Names: AZ30_00060metXSACOL0012USA300HOU_0012
EC: 2.3.1.31
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.291 
  • R-Value Work: 0.240 
  • R-Value Observed: 0.242 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 49.155α = 90
b = 49.155β = 90
c = 481.417γ = 120
Software Package:
Software NamePurpose
CrystalCleardata collection
BALBESphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-08-20
    Type: Initial release
  • Version 1.1: 2014-12-17
    Changes: Database references