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Literature summary for 2.3.1.7 extracted from

  • Violante, S.; Ijlst, L.; Ruiter, J.; Koster, J.; van Lenthe, H.; Duran, M.; de Almeida, I.T.; Wanders, R.J.; Houten, S.M.; Ventura, F.V.
    Substrate specificity of human carnitine acetyltransferase: Implications for fatty acid and branched-chain amino acid metabolism (2013), Biochim. Biophys. Acta, 1832, 773-779.
    View publication on PubMed

Cloned(Commentary)

Cloned (Comment) Organism
expressed in Escherichia coli BL21(DE3) cells Homo sapiens

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.078
-
acetyl-CoA peroxisomal enzyme, at pH 7.4 and 37°C Homo sapiens
0.24
-
acetyl-CoA mitochondrial enzyme, at pH 7.4 and 37°C Homo sapiens
0.499
-
butyryl-CoA mitochondrial enzyme, at pH 7.4 and 37°C Homo sapiens

Localization

Localization Comment Organism GeneOntology No. Textmining
mitochondrion
-
Homo sapiens 5739
-
peroxisome
-
Homo sapiens 5777
-

Organism

Organism UniProt Comment Textmining
Homo sapiens
-
-
-

Purification (Commentary)

Purification (Comment) Organism
HisLink protein purification resin column chromatography Homo sapiens

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
acetyl-CoA + L-carnitine
-
Homo sapiens CoA + O-acetylcarnitine
-
?
butyryl-CoA + L-carnitine
-
Homo sapiens CoA + O-butyrylcarnitine
-
?
additional information the enzyme shows some activity with acyl-CoAs of longer chain length including C12- and C14-CoA, but not with C16-CoA. Trans-2-enoyl-CoA intermediates such as trans-2-ene-C4-CoA (crotonyl-CoA, trans-2-C4:1-CoA), trans-2-ene-3-methyl-C4-CoA (3-methylcrotonyl-CoA), and trans-2-ene-2-methyl-C4-CoA are poor substrates for the enzyme and no activity is found with dicarboxylic acyl-CoA esters Homo sapiens ?
-
?
octanoyl-CoA + L-carnitine
-
Homo sapiens CoA + O-octanoylcarnitine
-
?
palmitoyl-CoA + L-carnitine
-
Homo sapiens CoA + O-palmitoylcarnitine
-
?
propionyl-CoA + L-carnitine
-
Homo sapiens CoA + O-propionylcarnitine
-
?

Synonyms

Synonyms Comment Organism
carnitine acetyltransferase
-
Homo sapiens
CRAT
-
Homo sapiens