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CYP27A1 cytochrome P450, family 27, subfamily A, polypeptide 1

Also known as: CTX; CP27; CYP27


This gene encodes a member of the cytochrome P450 superfamily of enzymes. The cytochrome P450 proteins are monooxygenases which catalyze many reactions involved in drug metabolism and synthesis of cholesterol, steroids and other lipids. This mitochondrial protein oxidizes cholesterol intermediates as part of the bile synthesis pathway. Since the conversion of cholesterol to bile acids is the major route for removing cholesterol from the body, this protein is important for overall cholesterol homeostasis. Mutations in this gene cause cerebrotendinous xanthomatosis, a rare autosomal recessive lipid storage disease. [provided by RefSeq, Jul 2008]

Genomic context

Chromosome: 2; NC_000002.12 (218781749..218815293)
Total number of exons:


  • BioSystems
  • ClinVar
    Related medical variations
  • CYP27A1 @ LOVD
  • dbVar
    Link from Gene to dbVar
  • MedGen
    Related information in MedGen
  • OMIM
    Links between OMIM and Gene are calculated by Gene based on MIM numbers included in the summary and phenotype sections of the Gene record.
  • PubMed (OMIM)
    Links are provided when Gene has a link to a record in OMIM, and OMIM explicitly cites these publications in PubMed.
  • RefSeq RNAs
    Link to Nucleotide RefSeq RNAs
  • RefSeqGene
    Link to Nucleotide RefSeqGenes
  • SNP: GeneView
    SNPs linked from GeneView

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