2C2N

Structure of human mitochondrial malonyltransferase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.178 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Structural Basis for Different Specificities of Acyltransferases Associated with the Human Cytosolic and Mitochondrial Fatty Acid Synthases.

Bunkoczi, G.Misquitta, S.Wu, X.Lee, W.H.Rojkova, A.Kochan, G.Kavanagh, K.L.Oppermann, U.Smith, S.

(2009) Chem.Biol. 16: 667

  • DOI: 10.1016/j.chembiol.2009.04.011
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Animals employ two systems for the de novo biosynthesis of fatty acids: a megasynthase complex in the cytosol (type I) that produces mainly palmitate, and an ensemble of freestanding enzymes in the mitochondria (type II) that produces mainly octanoyl ...

    Animals employ two systems for the de novo biosynthesis of fatty acids: a megasynthase complex in the cytosol (type I) that produces mainly palmitate, and an ensemble of freestanding enzymes in the mitochondria (type II) that produces mainly octanoyl moieties. The acyltransferases responsible for initiation of fatty acid biosynthesis in the two compartments are distinguished by their different substrate specificities: the type I enzyme transfers both the acetyl primer and the malonyl chain extender, whereas the type II enzyme is responsible for translocation of only the malonyl substrate. Crystal structures for the type I and II enzymes, supported by in silico substrate docking studies and mutagenesis experiments that alter their respective specificities, reveal that, although the two enzymes adopt a similar overall fold, subtle differences at their catalytic centers account for their different specificities.


    Organizational Affiliation

    Structural Genomics Consortium, University of Oxford, Oxford OX3 7LD, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
MALONYL COA-ACYL CARRIER PROTEIN TRANSACYLASE
A, B
339Homo sapiensMutation(s): 0 
Gene Names: MCAT (MT)
EC: 2.3.1.39
Find proteins for Q8IVS2 (Homo sapiens)
Go to Gene View: MCAT
Go to UniProtKB:  Q8IVS2
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
DXE
Query on DXE

Download SDF File 
Download CCD File 
A
1,2-DIMETHOXYETHANE
C4 H10 O2
XTHFKEDIFFGKHM-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

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Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
CL
Query on CL

Download SDF File 
Download CCD File 
B
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
AE3
Query on AE3

Download SDF File 
Download CCD File 
B
2-(2-ETHOXYETHOXY)ETHANOL
C6 H14 O3
XXJWXESWEXIICW-UHFFFAOYSA-N
 Ligand Interaction
AE4
Query on AE4

Download SDF File 
Download CCD File 
A
3,6,9,12,15-PENTAOXAHEPTADECAN-1-OL
C12 H26 O6
NJRFAMBTWHGSDE-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.178 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 52.573α = 90.00
b = 84.828β = 93.43
c = 74.565γ = 90.00
Software Package:
Software NamePurpose
SCALAdata scaling
MOSFLMdata reduction
PHASERphasing
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-01-18
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Refinement description, Version format compliance
  • Version 1.2: 2014-01-29
    Type: Database references, Derived calculations
  • Version 1.3: 2019-03-06
    Type: Data collection, Experimental preparation, Other
  • Version 1.4: 2019-05-08
    Type: Data collection, Experimental preparation