After several years of serving the research community, our ActiveDriverDB database will be retired on May 1st 2026. Please make sure to download any data you need and update your links or workflows before that date.

We want to sincerely thank all our users for their support, feedback, and collaboration over the years — your contributions have been invaluable to this project. A special thank you to Dr. Michal Krassowski for leading the development of our open-source software and database.

For any questions or assistance, please contact Jüri Reimand (juri.reimand@utoronto.ca).

You are viewing an updated version (2021) of the ActiveDriverDB. To view the previous version please visit activedriverdb.org/v2020

CYP27B1 (NM_000785) - cytochrome P450 family 27 subfamily B member 1

25-Hydroxyvitamin D-1 Alpha Hydroxylase, Mitochondrial

PTM Interaction Network Visualisation

Protein summary

This is preferred isoform of CYP27B1 protein.
CYP27B1: 25-hydroxyvitamin D-1 alpha hydroxylase, mitochondrial
Description:

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. The protein encoded by this gene localizes to the inner mitochondrial membrane where it hydroxylates 25-hydroxyvitamin D3 at the 1alpha position. This reaction synthesizes 1alpha,25-dihydroxyvitamin D3, the active form of vitamin D3, which binds to the vitamin D receptor and regulates calcium metabolism. Thus this enzyme regulates the level of biologically active vitamin D and plays an important role in calcium homeostasis. Mutations in this gene can result in vitamin D-dependent rickets type I. [provided by RefSeq, Jul 2008].

Publication Note:
This RefSeq record includes a subset of the publications that are available for this gene. Please see the Gene record to access additional publications.

Evidence data:
Transcript exon combination :: AB005038.1, AF020192.1 [ECO:0000332] RNAseq introns :: single sample supports all introns SAMEA1970526, SAMEA2145774 [ECO:0000348]

##RefSeq-Attributes-START## gene product(s) localized to mito. :: reported by MitoCarta MANE Ensembl match :: ENST00000228606.9/ ENSP00000228606.4 RefSeq Select criteria :: based on single protein-coding transcript ##RefSeq-Attributes-END##

Strand
-
Chromosome
12
Protein
508 residues
All mutations
96
PTM sites
0
CDS
58,156,924 - 58,160,824
Transcription
58,156,116 - 58,160,976
6.69% of sequence is predicted to be disordered

Usage summary

Network

drag the background to move whole network
scroll to zoom in and out

PTM site

double click to focus on site's sub-network (or hide it)

Kinases group

double click to show/hide all kinases within the group.

Kinase, PTM site or protein

hover to see a tooltip with additional information
click to stick the tooltip
drag a node to move it and stick in a chosen place
shift + click to free a node which was stuck earlier

External references

Mappings retrieved from NCBI & UniProt.
RefSeq
Entrez
gene: 1594
UniProt
Ensembl