Homo sapiens Gene: CYB5R3
Summary
InnateDB Gene IDBG-10149.6
Last Modified 2014-10-13 [Report errors or provide feedback]
Gene Symbol CYB5R3
Gene Name cytochrome b5 reductase 3
Synonyms B5R; DIA1
Species Homo sapiens
Ensembl Gene ENSG00000100243
Encoded Proteins
cytochrome b5 reductase 3
cytochrome b5 reductase 3
cytochrome b5 reductase 3
cytochrome b5 reductase 3
cytochrome b5 reductase 3
cytochrome b5 reductase 3
Protein Structure
Useful resources Stemformatics EHFPI ImmGen
Entrez Gene
Summary This gene encodes cytochrome b5 reductase, which includes a membrane-bound form in somatic cells (anchored in the endoplasmic reticulum, mitochondrial and other membranes) and a soluble form in erythrocytes. The membrane-bound form exists mainly on the cytoplasmic side of the endoplasmic reticulum and functions in desaturation and elongation of fatty acids, in cholesterol biosynthesis, and in drug metabolism. The erythrocyte form is located in a soluble fraction of circulating erythrocytes and is involved in methemoglobin reduction. The membrane-bound form has both membrane-binding and catalytic domains, while the soluble form has only the catalytic domain. Alternate splicing results in multiple transcript variants. Mutations in this gene cause methemoglobinemias. [provided by RefSeq, Jan 2010]
Gene Information
Type Protein coding
Genomic Location Chromosome 22:42617840-42649568
Strand Reverse strand
Band q13.2
Transcripts
ENST00000352397 ENSP00000338461
ENST00000361740 ENSP00000354468
ENST00000407623 ENSP00000384834
ENST00000407332 ENSP00000384457
ENST00000402438 ENSP00000385679
ENST00000438270 ENSP00000403439
ENST00000470741
ENST00000466276
Interactions
Number of Interactions This gene and/or its encoded proteins are associated with 10 experimentally validated interaction(s) in this database.
They are also associated with 3 interaction(s) predicted by orthology.
Experimentally validated
Total 10 [view]
Protein-Protein 10 [view]
Protein-DNA 0
Protein-RNA 0
DNA-DNA 0
RNA-RNA 0
DNA-RNA 0
Predicted by orthology
Total 3 [view]
Gene Ontology

Molecular Function
Accession GO Term
GO:0004128 cytochrome-b5 reductase activity, acting on NAD(P)H
GO:0005515 protein binding
GO:0016208 AMP binding
GO:0016491 oxidoreductase activity
GO:0043531 ADP binding
GO:0050660 flavin adenine dinucleotide binding
GO:0051287 NAD binding
GO:0071949 FAD binding
Biological Process
GO:0006695 cholesterol biosynthetic process
GO:0006766 vitamin metabolic process
GO:0006767 water-soluble vitamin metabolic process
GO:0008015 blood circulation
GO:0019852 L-ascorbic acid metabolic process
GO:0044281 small molecule metabolic process
GO:0055114 oxidation-reduction process
Cellular Component
GO:0005737 cytoplasm
GO:0005739 mitochondrion
GO:0005741 mitochondrial outer membrane
GO:0005743 mitochondrial inner membrane
GO:0005783 endoplasmic reticulum
GO:0005789 endoplasmic reticulum membrane
GO:0005811 lipid particle
GO:0005833 hemoglobin complex
GO:0016020 membrane
GO:0070062 extracellular vesicular exosome
Orthologs
Species
Mus musculus
Bos taurus
Gene ID
Gene Order
Not yet available
Pathways
NETPATH
REACTOME
Vitamin C (ascorbate) metabolism pathway
Defective HLCS causes multiple carboxylase deficiency pathway
Defective MUT causes methylmalonic aciduria mut type pathway
Defective MMAA causes methylmalonic aciduria type cblA pathway
Defective TCN2 causes hereditary megaloblastic anemia pathway
Metabolism of water-soluble vitamins and cofactors pathway
Defective AMN causes hereditary megaloblastic anemia 1 pathway
Defective MTR causes methylmalonic aciduria and homocystinuria type cblG pathway
Defective LMBRD1 causes methylmalonic aciduria and homocystinuria type cblF pathway
Defective CD320 causes methylmalonic aciduria pathway
Defects in cobalamin (B12) metabolism pathway
Defective MMACHC causes methylmalonic aciduria and homocystinuria type cblC pathway
Defects in biotin (Btn) metabolism pathway
Defective BTD causes biotidinase deficiency pathway
Defective GIF causes intrinsic factor deficiency pathway
Defects in vitamin and cofactor metabolism pathway
Defective CUBN causes hereditary megaloblastic anemia 1 pathway
Defective MMADHC causes methylmalonic aciduria and homocystinuria type cblD pathway
Defective MTRR causes methylmalonic aciduria and homocystinuria type cblE pathway
Metabolism pathway
Defective MMAB causes methylmalonic aciduria type cblB pathway
Disease pathway
Metabolism of vitamins and cofactors pathway
KEGG
Amino sugar and nucleotide sugar metabolism pathway
INOH
PID NCI
Cross-References
SwissProt P00387
TrEMBL A0A024R4X0 B1AHF3
UniProt Splice Variant
Entrez Gene 1727
UniGene Hs.561064
RefSeq NM_000398 NM_001129819 NM_001171660 NM_001171661 NM_007326
HUGO HGNC:2873
OMIM 613213
CCDS CCDS14040 CCDS33658 CCDS54535
HPRD
IMGT
EMBL AF061830 AF061831 AF361370 AJ010116 AJ010117 AJ010118 AJ310899 AJ310900 AK302204 AY341030 BC004821 BT009821 CH471138 CR456435 M16461 M16462 M28705 M28706 M28707 M28708 M28709 M28710 M28711 M28713 Y09501 Z93241
GenPept AAA52306 AAA52307 AAA59900 AAF06818 AAF06819 AAH04821 AAL87744 AAP88823 AAP88936 BAH13649 CAA09006 CAA09007 CAA09008 CAA70696 CAB42843 CAC84523 CAC84524 CAG30321 CAQ08414 EAW73268 EAW73272 EAW73273
RNA Seq Atlas 1727