1MLA

THE ESCHERICHIA COLI MALONYL-COA:ACYL CARRIER PROTEIN TRANSACYLASE AT 1.5-ANGSTROMS RESOLUTION. CRYSTAL STRUCTURE OF A FATTY ACID SYNTHASE COMPONENT


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Work: 0.184 
  • R-Value Observed: 0.184 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

The Escherichia coli malonyl-CoA:acyl carrier protein transacylase at 1.5-A resolution. Crystal structure of a fatty acid synthase component.

Serre, L.Verbree, E.C.Dauter, Z.Stuitje, A.R.Derewenda, Z.S.

(1995) J Biol Chem 270: 12961-12964

  • DOI: 10.1074/jbc.270.22.12961
  • Primary Citation of Related Structures:  
    1MLA

  • PubMed Abstract: 
  • Endogenous fatty acids are synthesized in all organisms in a pathway catalyzed by the fatty acid synthase complex. In bacteria, where the fatty acids are used primarily for incorporation into components of cell membranes, fatty acid synthase is made up of several independent cytoplasmic enzymes, each catalyzing one specific reaction ...

    Endogenous fatty acids are synthesized in all organisms in a pathway catalyzed by the fatty acid synthase complex. In bacteria, where the fatty acids are used primarily for incorporation into components of cell membranes, fatty acid synthase is made up of several independent cytoplasmic enzymes, each catalyzing one specific reaction. The initiation of the elongation step, which extends the length of the growing acyl chain by two carbons, requires the transfer of the malonyl moiety from malonyl-CoA onto the acyl carrier protein. We report here the crystal structure (refined at 1.5-A resolution to an R factor of 0.19) of the malonyl-CoA specific transferase from Escherichia coli. The protein has an alpha/beta type architecture, but its fold is unique. The active site inferred from the location of the catalytic Ser-92 contains a typical nucleophilic elbow as observed in alpha/beta hydrolases. Serine 92 is hydrogen bonded to His-201 in a fashion similar to various serine hydrolases. However, instead of a carboxyl acid typically found in catalytic triads, the main chain carbonyl of Gln-250 serves as a hydrogen bond acceptor in an interaction with His-201. Two other residues, Arg-117 and Glu-11, are also located in the active site, although their function is not clear.


    Organizational Affiliation

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



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
MALONYL-COENZYME A ACYL CARRIER PROTEIN TRANSACYLASEA309Escherichia coliMutation(s): 0 
EC: 2.3.1.39
Find proteins for P0AAI9 (Escherichia coli (strain K12))
Explore P0AAI9 
Go to UniProtKB:  P0AAI9
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Work: 0.184 
  • R-Value Observed: 0.184 
  • Space Group: P 65
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 68.18α = 90
b = 68.18β = 90
c = 118.56γ = 120
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
DENZOdata reduction
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1996-03-08
    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: 2017-11-29
    Changes: Derived calculations, Other