en Carnitine O-palmitoyltransferase

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Choline/Carnitine o-acyltransferase

Structure of carnitine acetyltransferase.^[1]

Identifiers

Symbol

Carn_acyltransf

Pfam clan

1ndi / SCOPe / SUPFAM

OPM superfamily

OPM protein

2h3u

Available protein structures:
Pfam	structures / ECOD
PDB	RCSB PDB; PDBe; PDBj
PDBsum	structure summary

Carnitine O-palmitoyltransferase (also called carnitine palmitoyltransferase) is a mitochondrial transferase enzyme (EC 2.3.1.21) involved in the metabolism of palmitoylcarnitine into palmitoyl-CoA. A related transferase is carnitine acyltransferase.

Molecules

Pathway

This section is empty. You can help by adding to it. (September 2019)

Human forms

There are four different forms of CPT in humans:

CPT1A – associated with Carnitine palmitoyltransferase I deficiency
CPT1B
CPT1C
CPT2 – associated with carnitine palmitoyltransferase II deficiency

References

^ Jogl G, Tong L (January 2003). "Crystal structure of carnitine acetyltransferase and implications for the catalytic mechanism and fatty acid transport". Cell. 112 (1): 113–22. doi:10.1016/S0092-8674(02)01228-X. PMID 12526798.

External links

PDOC00402 – Acyltransferases ChoActase / COT / CPT family in PROSITE
Choline/Carnitine o-acyltransferase family^{[permanent dead link‍]} in Pfam
UMich Orientation of Proteins in Membranes protein/pdbid-2h4t
Carnitine+O-Palmitoyltransferase at the U.S. National Library of Medicine Medical Subject Headings (MeSH)

Metabolism: lipid metabolism / fatty acid metabolism, triglyceride and fatty acid enzymes

Synthesis

Malonyl-CoA synthesis	ATP citrate lyase Acetyl-CoA carboxylase
Fatty acid synthesis/ Fatty acid synthase	Beta-ketoacyl-ACP synthase Β-Ketoacyl ACP reductase 3-Hydroxyacyl ACP dehydrase Enoyl ACP reductase
Fatty acid desaturases	Stearoyl-CoA desaturase-1
Triacyl glycerol	Glycerol-3-phosphate dehydrogenase Thiokinase

Degradation

Acyl transport

Beta oxidation

General	Acyl CoA dehydrogenase (ACADL ACADM ACADS ACADVL ACADSB) Enoyl-CoA hydratase MTP: HADH HADHA HADHB Acetyl-CoA C-acyltransferase
Unsaturated	Enoyl CoA isomerase 2,4 Dienoyl-CoA reductase
Odd chain	Propionyl-CoA carboxylase
Other	Hydroxyacyl-Coenzyme A dehydrogenase

To acetyl-CoA

Malonyl-CoA decarboxylase

Aldehydes

Long-chain-aldehyde dehydrogenase

v t e Transferases: acyltransferases (EC 2.3)
2.3.1: other than amino-acyl groups	acetyltransferases: Acetyl-Coenzyme A acetyltransferase N-Acetylglutamate synthase Choline acetyltransferase Dihydrolipoyl transacetylase Acetyl-CoA C-acyltransferase Beta-galactoside transacetylase Chloramphenicol acetyltransferase N-acetyltransferase Serotonin N-acetyl transferase HGSNAT ARD1A Histone acetyltransferase P300/CBP NAT2 palmitoyltransferases: Carnitine O-palmitoyltransferase CPT1 CPT2 Serine C-palmitoyltransferase SPTLC1 SPTLC2 other: Acyltransferase like 2 Aminolevulinic acid synthase Beta-ketoacyl-ACP synthase Glyceronephosphate O-acyltransferase Lecithin—cholesterol acyltransferase Glycerol-3-phosphate O-acyltransferase 1-acylglycerol-3-phosphate O-acyltransferase 2-acylglycerol-3-phosphate O-acyltransferase ABHD5
2.3.2: Aminoacyltransferases	Gamma-glutamyl transpeptidase Peptidyl transferase Transglutaminase Tissue transglutaminase Keratinocyte transglutaminase Factor XIII
2.3.3: converted into alkyl on transfer	Citrate synthase Decylcitrate synthase Citrate (Re)-synthase Decylhomocitrate synthase 2-methylcitrate synthase 2-ethylmalate synthase 3-ethylmalate synthase ATP citrate lyase Malate synthase HMG-CoA synthase HMGCS2 2-hydroxyglutarate synthase 3-propylmalate synthase 2-isopropylmalate synthase Homocitrate synthase Sulfoacetaldehyde acetyltransferase

v t e Enzymes
Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Diffusion-limited enzyme Cofactor Enzyme catalysis
Regulation	Allosteric regulation Cooperativity Enzyme inhibitor Enzyme activator
Classification	EC number Enzyme superfamily Enzyme family List of enzymes
Kinetics	Enzyme kinetics Eadie–Hofstee diagram Hanes–Woolf plot Lineweaver–Burk plot Michaelis–Menten kinetics
Types	EC1 Oxidoreductases (list) EC2 Transferases (list) EC3 Hydrolases (list) EC4 Lyases (list) EC5 Isomerases (list) EC6 Ligases (list) EC7 Translocases (list)

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