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Symbol CPT1C contributors: mct/shn - updated : 09-12-2016
HGNC name carnitine palmitoyltransferase 1C
HGNC id 18540
TYPE functioning gene
STRUCTURE 23.06 kb     20 Exon(s)
10 Kb 5' upstream gene genomic sequence study
regulatory sequence Promoter
text structure polyadenylation signal AATAAA
MAPPING cloned Y linked N status confirmed
Map cen - D19S879 - D19S604 - CPT1C - D19S867 - D19S585 - qter
Physical map
NTT5 19q13.1-q13.4 vaccinia related kinase 3 CD37 19q13.3 CD37 antigen DKKL1-pending 19q13.33 soggy-1 gene TEAD2 19q13.3 TEA domain family member 2 FLJ32658 19q13.33 hypothetical protein FLJ32658 TIP39 19q13.33 tuberoinfundibular 39 residue protein precursor LOC390955 19 similar to ENSANGP00000004655 SLC17A7 19q13 solute carrier family 17 (sodium-dependent inorganic phosphate cotransporter), member 7 FLJ20643 19q13.33 hypothetical protein FLJ20643 MGC10204 19q13.33 hypothetical protein MGC10204 FLT3LG 19q13.3 fms-related tyrosine kinase 3 ligand RPL13A 19q13.4 ribosomal protein L13a RPS11 19q13.3 ribosomal protein S11 FCGRT 19q13.3 Fc fragment of IgG, receptor, transporter, alpha RCN3 19q13.33 reticulocalbin 3, EF-hand calcium binding domain NOSIP 19q13.3 nitric oxide synthase interacting protein PRRG2 19q13.33 proline-rich Gla (G-carboxyglutamic acid) polypeptide 2 KIAA1205 19q13.33 KIAA1205 RRAS 19q13.3-q13.4 related RAS viral (r-ras) oncogene homolog SR-A1 19q13.3-q13.4 serine arginine-rich pre-mRNA splicing factor SR-A1 IRF3 19q13.3 interferon regulatory factor 3 BCL2L12 19q13.3 BCL2-like 12 (proline rich) HRMT1L2 19q13-3 HMT1 hnRNP methyltransferase-like 2 (S. cerevisiae) LOC199800 19q13.33 hypothetical protein LOC199800 CPT1C 19q13.33 hypothetical protein LOC199800 LOC388556 19 hypothetical gene supported by NM_001013 TSKS 19q13.3 hypothetical gene supported by NM_001013 AP2A1 19q13.3 adaptor-related protein complex 2, alpha 1 subunit FLJ22688 19q13.33 hypothetical protein FLJ22688 TCBAP0758 19q13.3 hypothetical protein TCBAP0758 PTOV1 19q13.33 prostate tumor over expressed gene 1 PNKP 19q13.3-q13.4 polynucleotide kinase 3'-phosphatase MGC2865 19q13.33 hypothetical protein MGC2865 FLJ12168 IL4I1 19q13.3-q13.4 interleukin 4 induced 1 NUP62 19q13.33 nucleoporin 62kDa ATF5 19q13.3 activating transcription factor 5 SIGLEC11 19q13.33 sialic acid binding Ig-like lectin 11 VRK3 19q13 vaccinia related kinase 3
TRANSCRIPTS type messenger
identificationnb exonstypebpproduct
ProteinkDaAAspecific expressionYearPubmed
20 splicing 2853 - 792 - 2004 15363638
20 splicing 2935 - 803 - 2004 15363638
20 splicing 2883 - 803 - 2004 15363638
19 splicing 2814 - 803 - 2004 15363638
Type restricted
   expressed in (based on citations)
SystemOrgan level 1Organ level 2Organ level 3Organ level 4LevelPubmedSpeciesStageRna symbol
Nervousbraindiencephalonhypothalamus highly
 brainlimbic systemhippocampus   Homo sapiens
Visualeyeretina    Homo sapiens
SystemCellPubmedSpeciesStageRna symbol
Nervousneuron Homo sapiens
Nervouspyramidal cell Homo sapiens
Visualcone photoreceptor Homo sapiens
cell lineage
cell lines
  • N-terminal end lacks the mitochondrial import signal present in CPT1A and contains a putative microsomal targeting signal responsible for ER localization
  • two membrane-spanning region, and second transmembrane domain is longer than in the other two isoforms, which may enable it to sort proteins to the ER rather than to mitochondrial outer membrane
  • a large C terminal cytosolic domain responsible for the catalytic function
    interspecies ortholog to Cpt1, Mus musculus
    ortholog to Cpt1c, Rattus Norvegicus
    intraspecies homolog to CPT1A,CPT1B
    FAMILY carnitine/choline acetyltransferase family
    CATEGORY enzyme
    SUBCELLULAR LOCALIZATION     plasma membrane
    intracellular,cytoplasm,organelle,endoplasmic reticulum
  • brain-specific isoform located in the endoplasmic reticulum of neurons
  • located in the endoplasmic reticulum throughout the neuron, even inside dendritic spines
  • basic FUNCTION
  • playing a role in neural tissue fatty acid metabolism and in feeding behavior or appetite control
  • participates in a biosynthetic pathway, facilitating the constant transport of palmitate across the ER membrane, rather than in a highly active catabolic pathway such as fatty acid oxidation
  • necessary for the regulation of energy homeostasis
  • can elicit profound effects on brain physiology and total fatty acid profiles
  • is implicated in malonyl-CoA action in leptin hypothalamic anorectic signaling pathways
  • implicated in the hypothalamic regulation of food intake and energy homeostasis
  • regulates the levels of ceramide in the endoplasmic reticulum of hippocampal neurons, and this is a relevant mechanism for the correct maturation of dendritic spines and for proper spatial learning
  • couples malonyl-CoA to ceramide levels thereby contributing to systemic energy homeostasis and feeding behavior
  • plays a role as a novel regulator of AMPAR surface expression in neurons
  • is a regulator of AMPAR translation efficiency and therefore also synaptic function in the hippocampus
    text carnitine palmitoyltransferase activity
    metabolism lipid/lipoprotein
    fatty and beta oxidation pathway
    a component
    small molecule
    protein binding malonyl-CoA, and regulating malonyl-CoA availability in the brain cell
  • in addition to formerly reported mechanisms, GHRL also induces food intake through regulation of hypothalamic CPT1C and ceramide metabolism, a finding of potential importance for the understanding and treatment of obesity
  • despite its potential as a depalmitoylating enzyme, CPT1C does not affect the palmitoylation state of GRIA1
  • CPT1C binds GRIA1 and GRIA2 and that the three proteins have the same expression profile during neuronal maturation
  • cell & other
    inhibited by malonyl-CoA during physiological hyperglycemia w
    corresponding disease(s) SPG73
    Variant & Polymorphism
    Candidate gene
    Therapy target
  • CPT1c KO mice have lower body weight and food intake, exhibit decreased rates of fatty acid oxidation and are more susceptible to obesity
  • double transgenic mice CPT1c-TgN displayed severe growth retardation and a greater reduction in brain weight in the postnatal period with a stunted development at 2 weeks of age