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acetyl-CoA + carnitine
CoA + O-acetylcarnitine
butyryl-CoA + carnitine
CoA + O-butyrylcarnitine
-
-
-
r
hexanoyl-CoA + carnitine
CoA + O-hexanoylcarnitine
very low activity
-
-
r
octanoyl-CoA + carnitine
CoA + O-octanoylcarnitine
very low activity
-
-
r
acetoacetyl-CoA + L-(-)carnitine
O-acetoacetyl(-)carnitine + CoASH
-
-
-
-
r
acetyl-CoA + carnitine
CoA + O-acetylcarnitine
-
-
-
-
?
acetyl-CoA + carnitine
O-acetylcarnitine + CoASH
-
-
486295, 487403, 487404, 487406, 487407, 487408, 487410, 487414, 487416, 487418, 487421, 487422, 487423, 487424, 487429, 487430, 487432 -
-
r
acetyl-CoA + choline
acetylcholine + CoA
-
low activity with wild-type enzyme. Mutant enzymes T465V/T467N/R518N and A106M/T465V/T467N/R518N show improved catalytic efficiency toward choline (Kcat/Km) compared with that of the wild type enzyme
-
-
?
acetyl-CoA + L-(-)carnitine
O-acetylcarnitine + CoASH
-
-
486295, 487403, 487404, 487406, 487407, 487408, 487410, 487414, 487416, 487418, 487421, 487422, 487423, 487424, 487429, 487430, 487432 -
-
r
acetyl-CoA + L-carnitine
CoA + O-acetylcarnitine
-
-
-
-
r
acyl-CoA + carnitine
acylcarnitine + CoASH
-
-
486295, 487403, 487404, 487406, 487407, 487408, 487410, 487414, 487416, 487417, 487418, 487421, 487422, 487423, 487424, 487429, 487430, 487432 -
-
r
acylcarnitine + CoASH
acyl-CoA + carnitine
-
-
486295, 487403, 487404, 487406, 487407, 487408, 487410, 487414, 487416, 487417, 487418, 487421, 487422, 487423, 487424, 487429, 487430, 487432 -
-
r
butyryl-CoA + carnitine
CoA + O-butyrylcarnitine
-
wild-type enzyme shows maximal activity towards butyryl-CoA
-
-
?
butyryl-CoA + L-carnitine
CoA + O-butyrylcarnitine
-
preferred substrate
-
-
r
decanoyl-CoA + carnitine
CoA + O-decanoylcarnitine
-
-
-
-
?
decanoyl-CoA + carnitine
decanoylcarnitine + CoASH
-
-
-
-
r
decanoylcarnitine + CoASH
decanoyl-CoA + carnitine
-
-
-
-
r
hexanoyl-CoA + carnitine
CoA + O-hexanoylcarnitine
-
mutant enzymes M564G and D356A/M564G show maximal activity towards hexanoyl-CoA
-
-
?
hexanoyl-CoA + carnitine
hexanoylcarnitine + CoASH
-
-
-
-
r
hexanoylcarnitine + CoASH
hexanoyl-CoA + carnitine
-
-
-
-
r
n-butyryl-CoA + carnitine
n-butyrylcarnitine + CoASH
-
-
-
-
r
n-butyrylcarnitine + CoASH
n-butyryl-CoA + carnitine
-
-
-
-
r
O-acetoacetyl(-)carnitine + CoASH
acetoacetyl-CoA + L-(-)carnitine
-
-
-
-
r
O-acetylcarnitine + CoASH
acetyl-CoA + carnitine
O-acetylcarnitine + CoASH
acetyl-CoA + L-(-)carnitine
-
-
486295, 487403, 487404, 487406, 487407, 487408, 487410, 487414, 487416, 487418, 487421, 487422, 487423, 487424, 487429, 487430, 487432 -
-
r
octanoyl-CoA + carnitine
CoA + O-octanoylcarnitine
-
-
-
-
?
octanoyl-CoA + carnitine
octanoylcarnitine + CoASH
-
-
-
-
r
octanoylcarnitine + CoASH
octanoyl-CoA + carnitine
-
-
-
-
r
palmitoyl-CoA + carnitine
CoA + O-palmitoylcarnitine
-
wild-type enzyme shows no activity, mutant enzymes M564G and D356A/M564G show activity
-
-
?
propionyl-CoA + L-(-)carnitine
propionylcarnitine + CoASH
-
-
-
-
r
propionyl-CoA + L-carnitine
CoA + O-propionylcarnitine
-
-
-
-
r
propionylcarnitine + CoASH
propionyl-CoA + L-(-)carnitine
-
-
-
-
r
additional information
?
-
acetyl-CoA + carnitine
CoA + O-acetylcarnitine
-
-
-
r
acetyl-CoA + carnitine
CoA + O-acetylcarnitine
modulates acetyl-CoA and CoA availability for a wide range of acyl-transfer reactions, involved in fatty acid metabolism
-
-
r
O-acetylcarnitine + CoASH
acetyl-CoA + carnitine
-
-
486295, 487403, 487404, 487406, 487407, 487408, 487410, 487414, 487416, 487418, 487421, 487422, 487423, 487424, 487429, 487430 -
-
r
O-acetylcarnitine + CoASH
acetyl-CoA + carnitine
-
key mitochondrial enzyme for fuel utilization, essential functions are to regenerate CoA, which allows peroxisomal beta-oxidation to proceed, and to facilitate transport of acetyl moieties to mitochondria for oxidation
-
-
r
additional information
?
-
wild type enzyme is almost inactive towards longer chain fatty acids, some mutations increases activity towards longer chain fatty acids
-
-
?
additional information
?
-
-
-
-
-
?
additional information
?
-
-
-
-
-
?
additional information
?
-
-
-
-
-
?
additional information
?
-
-
palmityl-CoA does not act as a substrate for the liver enzyme
-
-
?
additional information
?
-
-
O-acetyl-(+)-carnitine and reduced glutathione will not serve as substrates, succinyl-CoA or beta-hydroxy-betamethylglutaryl-CoA are no substrates
-
-
?
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0.022 - 0.033
hexanoyl-CoA
0.011 - 0.025
octanoyl-CoA
0.023
acetyl-CoA
-
mutant enzyme D356A/M564G
0.019 - 0.6
acetylcarnitine
0.48 - 0.66
butyrylcarnitine
0.64 - 0.66
decanoylcarnitine
2.28 - 2.51
hexanoylcarnitine
0.1
L-carnitine
-
at pH 7.8 and 37°C
1.27 - 1.62
octanoylcarnitine
0.0072
palmitoyl-CoA
-
mutant enzyme D356A/M564G
additional information
additional information
-
Km acetylcarnitine 1.25 mg/ml
-
0.023
acetyl-CoA
recombinant enzyme from yeast, pH 7.8, 30°C
0.032
acetyl-CoA
M564G mutant enzyme from yeast, pH 7.8, 30°C
0.015
butyryl-CoA
M564G mutant enzyme from yeast, pH 7.8, 30°C
0.03
butyryl-CoA
recombinant enzyme from yeast, pH 7.8, 30°C
0.086
carnitine
M564G mutant enzyme from yeast with octanoyl-CoA as second substrate, pH 7.8, 30°C
0.164
carnitine
M564G mutant enzyme from yeast with hexanoyl-CoA as second substrate, pH 7.8, 30°C
0.17
carnitine
M564G mutant enzyme from yeast with butyryl-CoA as second substrate, pH 7.8, 30°C
0.203
carnitine
recombinant enzyme from yeast with acetyl-CoA as second substrate, pH 7.8, 30°C
0.22
carnitine
recombinant enzyme from yeast with butyryl-CoA as second substrate, pH 7.8, 30°C
0.339
carnitine
M564G mutant enzyme from yeast with acetyl-CoA as second substrate, pH 7.8, 30°C
0.567
carnitine
recombinant enzyme from yeast with hexanoyl-CoA as second substrate, pH 7.8, 30°C
0.964
carnitine
recombinant enzyme from yeast with octanoyl-CoA as second substrate, pH 7.8, 30°C
0.022
hexanoyl-CoA
M564G mutant enzyme from yeast, pH 7.8, 30°C
0.033
hexanoyl-CoA
recombinant enzyme from yeast, pH 7.8, 30°C
0.011
octanoyl-CoA
M564G mutant enzyme from yeast, pH 7.8, 30°C
0.025
octanoyl-CoA
recombinant enzyme from yeast, pH 7.8, 30°C
0.019
acetylcarnitine
-
supplementation with R-alpha-lipoic acid
0.39
acetylcarnitine
-
enzyme from liver homogenate
0.6
acetylcarnitine
-
enzyme from mitochondria
0.48
butyrylcarnitine
-
enzyme from liver homogenate
0.66
butyrylcarnitine
-
enzyme from mitochondria
0.101
carnitine
-
wild-type enzyme
260
carnitine
-
mutant enzyme T465V/T467N/R518N
300
carnitine
-
above, mutant enzyme A106M/T465V/T467N/R518N
18.1
choline
-
mutant enzyme A106M/T465V/T467N/R518N
29
choline
-
mutant enzyme T465V/T467N/R518N
86.4
choline
-
wild-type enzyme
0.018
CoASH
-
supplementation with R-alpha-lipoic acid
0.022
CoASH
-
substrate hexanoylcarnitine, enzyme from liver homogenate
0.024
CoASH
-
substrate decanoylcarnitine, enzyme from liver homogenate
0.027
CoASH
-
substrate decanoylcarnitine, enzyme from mitochondria
0.027
CoASH
-
substrate butyrylcarnitine and octanoylcarnitine, enzyme from liver homogenate
0.028
CoASH
-
substrate acetylcarnitine, enzyme from liver homogenate
0.032
CoASH
-
substrate acetylcarnitine, enzyme from mitochondria
0.038
CoASH
-
substrate butyrylcarnitine, enzyme from mitochondria
0.044
CoASH
-
substrate hexanoylcarnitine, enzyme from mitochondria
0.054
CoASH
-
substrate octanoylcarnitine, enzyme from mitochondria
0.64
decanoylcarnitine
-
enzyme from mitochondria
0.66
decanoylcarnitine
-
enzyme from liver homogenate
2.28
hexanoylcarnitine
-
enzyme from liver homogenate
2.51
hexanoylcarnitine
-
enzyme from mitochondria
1.27
octanoylcarnitine
-
enzyme from mitochondria
1.62
octanoylcarnitine
-
enzyme from liver homogenate
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Farrell, S.O.; Fiol, C.J.; Reddy, J.K.; Bieber, L.L.
Properties of purified carnitine acyltransferases of mouse liver peroxisomes
J. Biol. Chem.
259
13089-13095
1984
Bos taurus, Mus musculus, Rattus norvegicus, Rattus norvegicus Sprague-Dawley, Torulopsis bovina
brenda
Mittal, B.; Kurup, C.K.R.
Purification of clofibrate-induced carnitine acetyltransferase from rat liver mitochondria
Biochim. Biophys. Acta
619
90-97
1980
Columba sp., Rattus norvegicus, Sus scrofa
brenda
Bieber, L.L.; Markwell, M.A.K.
Peroxisomal and microsomal carnitine acetyltransferases
Methods Enzymol.
71
351-358
1981
Bos taurus, Cavia porcellus, Columba sp., Rattus norvegicus, Sus scrofa
-
brenda
Ueda, M.; Tanaka, A.; Fukui, S.
Peroxisomal and mitochondrial carnitine acetyltransferases in alkane-grown yeast Candida tropicalis
Eur. J. Biochem.
124
205-210
1982
Candida tropicalis, Columba sp., Rattus norvegicus, Sus scrofa
brenda
Huckle, W.R.; Tamblyn, T.M.
Purification and properties of carnitine acetyltransferases from bovine spermatozoa and heart
Arch. Biochem. Biophys.
226
94-110
1983
Bos taurus, Columba sp., Ovis aries, Rattus norvegicus
brenda
Miyazawa, S.; Ozasa, H.; Furuta, S.; Osumi, T.; Hashimoto, T.
Purification and properties of carnitine acetyltransferase from rat liver
J. Biochem.
93
439-451
1983
Columba sp., Rattus norvegicus
brenda
Ueda, M.; Tanaka, A.; Fukui, S.
Characterization of peroxisomal and mitochondrial carnitine acetyltransferases purified from alkane-grown Candida tropicalis
Eur. J. Biochem.
138
445-449
1984
Candida tropicalis, Columba sp., Rattus norvegicus
brenda
Gandour, R.D.; Colucci, W.J.; Stelly, T.C.; Brady, P.S.; Brady, L.J.
Active-site probes of carnitineacyltransferases. Inhibition of carnitine acetyltransferase by hemiacetylcarnitinium, a reaction intermediate analogue
Biochem. Biophys. Res. Commun.
138
735-741
1986
Columba sp., Rattus norvegicus
brenda
Bloisi, W.; Colombo, I.; Garavaglia, B.; Giardini, R.; Finocchiaro, G.; Didonato, S.
Purification and properties of carnitine acetyltransferase from human liver
Eur. J. Biochem.
189
539-546
1990
Homo sapiens, Rattus norvegicus, Sus scrofa
brenda
Chung, C.; Chung, C.D.; Bieber, L.L.
Purification of heart and liver mitochondrial carnitine acetyltransferase
Protein Expr. Purif.
2
426-431
1991
Rattus norvegicus
brenda
Kispal, G.; Cseko, J.; Alkonyi, I.; Sandor, A.
Isolation and characterization of carnitine acetyltransferase from S. cerevisiae
Biochim. Biophys. Acta
1085
217-222
1991
Bos taurus, Saccharomyces cerevisiae, Candida tropicalis, Columba sp., Homo sapiens, Rattus norvegicus, Torulopsis bovina
brenda
Alhomida, A.S.
Inhibition studies of the carnitine acetyltransferase from skeletal muscle of the camel (Camelus dromedarius) by sulfhydryl reagents and metal ions
Biochem. Mol. Biol. Int.
39
923-931
1996
Camelus dromedarius, Columba sp., Homo sapiens, Mus musculus, Rattus norvegicus, Saccharomyces cerevisiae
brenda
Alhomida, A.S.; Al-Jafari, A.A.; Duhaiman, A.S.; Rabbani, N.; Junaid, M.A.
Kinetic properties of purified carnitine acetyltransferase from the skeletal muscle of Arabian camel (Camelus dromedarius)
Biochimie
78
204-208
1996
Camelus dromedarius, Columba sp., Homo sapiens, Mus musculus, Rattus norvegicus, Sus scrofa
brenda
Alhomida, A.S.; Duhaiman, A.S.; Al-Jafari, A.A.; Junaid, M.A.
Purification of carnitine acetyltransferase from skeletal muscle of the camel (Camelus dromedarius)
Mol. Cell. Biochem.
165
95-101
1996
Bos taurus, Camelus dromedarius, Columba sp., Homo sapiens, Mus musculus, Rattus norvegicus
brenda
Jernejc, K.; Legisa, M.
Purification and properties of carnitine acetyltransferase from citric acid producing Aspergillus niger
Appl. Biochem. Biotechnol.
60
151-158
1996
Aspergillus niger, Bos taurus, Saccharomyces cerevisiae, Cutaneotrichosporon curvatum, Candida tropicalis, Cyberlindnera jadinii, Columba sp., Homo sapiens, Lipomyces starkeyi, Mus musculus, Rattus norvegicus, Sus scrofa
brenda
Abbas, A.S.; Wu, G.; Schulz, H.
Carnitine acetyltransferase is not a cytosolic enzyme in rat heart and therefore cannot function in the energy-linked regulation of cardiac fatty acid oxidation
J. Mol. Cell. Cardiol.
30
1305-1309
1998
Bos taurus, Rattus norvegicus, Rattus norvegicus Sprague-Dawley
brenda
Ramsay, R.R.
The carnitine acyltransferases: modulators of acyl-CoA-dependent reactions
Biochem. Soc. Trans.
28
182-186
2000
Homo sapiens, Rattus norvegicus
brenda
Liu, J.; Killilea, D.W.; Ames, B.N.
Age-associated mitochondrial oxidative decay: improvement of carnitine acetyltransferase substrate-binding affinity and activity in brain by feeding old rats acetyl-L-carnitine and/or R-alpha -lipoic acid
Proc. Natl. Acad. Sci. USA
99
1876-1881
2002
Columba sp., Oryctolagus cuniculus, Rattus norvegicus
brenda
Cordente, A.G.; Lopez-Vinas, E.; Vazquez, M.I.; Swiegers, J.H.; Pretorius, I.S.; Gomez-Puertas, P.; Hegardt, F.G.; Asins, G.; Serra, D.
Redesign of carnitine acetyltransferase specificity by protein engineering
J. Biol. Chem.
279
33899-33908
2004
Rattus norvegicus (Q704S8)
brenda
Cordente, A.G.; Lopez-Vinas, E.; Vazquez, M.I.; Gomez-Puertas, P.; Asins, G.; Serra, D.; Hegardt, F.G.
Mutagenesis of specific amino acids converts carnitine acetyltransferase into carnitine palmitoyltransferase
Biochemistry
45
6133-6141
2006
Rattus norvegicus
brenda
Bailey, J.A.; Lahiri, D.K.
Chromatographic separation of reaction products from the choline acetyltransferase and carnitine acetyltransferase assay: differential ChAT and CrAT activity in brain extracts from Alzheimers disease versus controls
J. Neurochem.
122
672-680
2012
Homo sapiens, Rattus norvegicus
brenda
Seiler, S.E.; Martin, O.J.; Noland, R.C.; Slentz, D.H.; DeBalsi, K.L.; Ilkayeva, O.R.; An, J.; Newgard, C.B.; Koves, T.R.; Muoio, D.M.
Obesity and lipid stress inhibit carnitine acetyltransferase activity
J. Lipid Res.
55
635-644
2014
Cavia porcellus, Rattus norvegicus
brenda