1NDF

Carnitine Acetyltransferase in Complex with Carnitine


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.200 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.3 of the entry. See complete history


Literature

Crystal Structure of Carnitine Acetyltransferase and Implications for the Catalytic Mechanism and Fatty Acid Transport

Jogl, G.Tong, L.

(2003) Cell 112: 113-122

  • DOI: https://doi.org/10.1016/s0092-8674(02)01228-x
  • Primary Citation of Related Structures:  
    1NDB, 1NDF, 1NDI

  • PubMed Abstract: 

    Carnitine acyltransferases have crucial roles in the transport of fatty acids for beta-oxidation. Dysregulation of these enzymes can lead to serious diseases in humans, and they are targets for therapeutic development against diabetes. We report the crystal structures of murine carnitine acetyltransferase (CRAT), alone and in complex with its substrate carnitine or CoA. The structure contains two domains. Surprisingly, these two domains share the same backbone fold, which is also similar to that of chloramphenicol acetyltransferase and dihydrolipoyl transacetylase. The active site is located at the interface between the two domains. Carnitine and CoA are bound in deep channels in the enzyme, on opposite sides of the catalytic His343 residue. The structural information provides a molecular basis for understanding the catalysis by carnitine acyltransferases and for designing their inhibitors. Specifically, our structural information suggests that the substrate carnitine may assist the catalysis by stabilizing the oxyanion in the reaction intermediate.


  • Organizational Affiliation

    Department of Biological Sciences, Columbia University, New York, NY 10027, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Carnitine Acetyltransferase
A, B
596Mus musculusMutation(s): 0 
EC: 2.3.1.7
UniProt
Find proteins for P47934 (Mus musculus)
Explore P47934 
Go to UniProtKB:  P47934
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP47934
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.200 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 160.68α = 90
b = 91.67β = 128.84
c = 122.61γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
COMOphasing
CNSrefinement

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-01-28
    Type: Initial release
  • Version 1.1: 2008-04-28
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2023-08-16
    Changes: Data collection, Database references, Derived calculations, Refinement description