CPT1B - Carnitine O-palmitoyltransferase 1, muscle isoform - human protein (Function)
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CPT1B »  Carnitine O-palmitoyltransferase 1, muscle isoform   [ EC ]  (CPT1-M)
Protein also known as:  Carnitine O-palmitoyltransferase I, muscle isoform (CPT I).
Gene name:  CPT1B
Entry whose protein(s) existence is based on evidence at protein level
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GO molecular function 
Carnitine O-palmitoyltransferase activitydefinition[GO:0004095]  
  • IEAEC 2 GO
GO biological process 
Fatty acid beta-oxidationdefinition[GO:0006635]  
  • IEAUniPathway
Enzymatic activity 
This protein acts as an enzyme. It is known to catalyze the following reaction
EC Palmitoyl-CoA + L-carnitine CoA + L-palmitoylcarnitine.  
  • CuratedUniProtKB
More information is available from:
This protein is involved in the following pathway
According to KEGG, this protein belongs to the following pathways:
Adipocytokine signaling pathway  hsa04920+1375  
Fatty acid metabolism  hsa00071+1375  
PPAR signaling pathway  hsa03320+1375  
According to Reactome, this protein belongs to the following pathway:
Import of palmitoyl-CoA into the mitochondrial matrix  REACT_11082  
More information is available from:
This protein is produced by a bicistronic gene which also produces the CHKB protein from a non-overlapping reading frame.  
  • CuratedUniProtKB


Biological process 
Fatty acid metabolism  definition   [KW-0276]
Lipid metabolism  definition   [KW-0443]
Transport  definition   [KW-0813]
Molecular function 
Acyltransferase  definition   [KW-0012]
Transferase  definition   [KW-0808]
Technical term 
Reference proteome  definition   [KW-1185]

Further external links

Enzyme and pathway databases
SABIO-RK: Q92523
GenomeRNAi: 1375
PRO: PR:Q92523