Structural highlights
2h3p is a 2 chain structure with sequence from Lk3 transgenic mice. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
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| Ligands: | , , |
| Related: | 1ndb, 1ndf, 1ndi, 1t7q, 1t7n, 1t7o, 2h3u, 2h3w |
| Gene: | Crat (LK3 transgenic mice) |
| Resources: | FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT |
Function
[CACP_MOUSE] Carnitine acetylase is specific for short chain fatty acids. Carnitine acetylase seems to affect the flux through the pyruvate dehydrogenase complex. It may be involved as well in the transport of acetyl-CoA into mitochondria.
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
Carnitine acyltransferases catalyze the reversible exchange of acyl groups between coenzyme A (CoA) and carnitine. They have important roles in many cellular processes, especially the oxidation of long-chain fatty acids in the mitochondria for energy production, and are attractive targets for drug discovery against diabetes and obesity. To help define in molecular detail the catalytic mechanism of these enzymes, we report here the high resolution crystal structure of wild-type murine carnitine acetyltransferase (CrAT) in a ternary complex with its substrates acetyl-CoA and carnitine, and the structure of the S554A/M564G double mutant in a ternary complex with the substrates CoA and hexanoylcarnitine. Detailed analyses suggest that these structures may be good mimics for the Michaelis complexes for the forward and reverse reactions of the enzyme, representing the first time that such complexes of CrAT have been studied in molecular detail. The structural information provides significant new insights into the catalytic mechanism of CrAT and possibly carnitine acyltransferases in general.
Crystal structures of murine carnitine acetyltransferase in ternary complexes with its substrates.,Hsiao YS, Jogl G, Tong L J Biol Chem. 2006 Sep 22;281(38):28480-7. Epub 2006 Jul 26. PMID:16870616[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Hsiao YS, Jogl G, Tong L. Crystal structures of murine carnitine acetyltransferase in ternary complexes with its substrates. J Biol Chem. 2006 Sep 22;281(38):28480-7. Epub 2006 Jul 26. PMID:16870616 doi:10.1074/jbc.M602622200
