Free for academic non-profit institutions. Other users need a Commercial license
The protein encoded by this gene is a membrane-bound cytochrome that reduces ferric hemoglobin (methemoglobin) to ferrous hemoglobin, which is required for stearyl-CoA-desaturase activity. Defects in this gene are a cause of type IV hereditary methemoglobinemia. Three transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jun 2010]
CYB5A (Cytochrome B5 Type A) is a Protein Coding gene. Diseases associated with CYB5A include Methemoglobinemia And Ambiguous Genitalia and Congenital Methemoglobinemia. Among its related pathways are Metabolism of water-soluble vitamins and cofactors and Cytochrome P450 - arranged by substrate type. Gene Ontology (GO) annotations related to this gene include enzyme binding and cytochrome-c oxidase activity. An important paralog of this gene is CYB5B.
GO ID | Qualified GO term | Evidence | PubMed IDs |
---|---|---|---|
GO:0004129 | cytochrome-c oxidase activity | TAS | 1712589 |
GO:0005515 | protein binding | IPI | 32814053 |
GO:0009055 | electron transfer activity | IBA | 21873635 |
GO:0019899 | enzyme binding | IPI | 15680923 |
GO:0020037 | heme binding | IBA | 21873635 |
GO ID | Qualified GO term | Evidence | PubMed IDs |
---|---|---|---|
GO:0005737 | cytoplasm | IEA | -- |
GO:0005741 | mitochondrial outer membrane | TAS | -- |
GO:0005783 | endoplasmic reticulum | IEA | -- |
GO:0005789 | endoplasmic reticulum membrane | IBA | 21873635 |
GO:0005829 | cytosol | IDA | -- |
SuperPathway | Contained pathways | ||
---|---|---|---|
1 | Metabolism of water-soluble vitamins and cofactors | ||
2 | Methylene Blue Pathway, Pharmacodynamics | ||
3 | Metabolism |
.40
|
|
4 | Cytochrome P450 - arranged by substrate type |
GO ID | Qualified GO term | Evidence | PubMed IDs |
---|---|---|---|
GO:0019852 | L-ascorbic acid metabolic process | TAS | -- |
GO:0022900 | electron transport chain | IEA | -- |
GO:0046686 | response to cadmium ion | IEA | -- |
GO:0055114 | oxidation-reduction process | IEA | -- |
GO:1902600 | proton transmembrane transport | IEA | -- |
Name | Status | Disease Links | Group | Role | Mechanism of Action | Clinical Trials |
---|---|---|---|---|---|---|
Chromic nitrate | Approved | Pharma | Target | 0 | ||
Chromium | Approved | Pharma | Target, substrate | 191 | ||
Chromium gluconate | Approved | Pharma | Target | 0 | ||
Chromium nicotinate | Approved, Experimental | Pharma | Target | 0 | ||
Chromous sulfate | Approved | Pharma | Target | 0 |
Name | Synonyms | Role | CAS Number | PubChem IDs | PubMed IDs |
---|
This gene was present in the common ancestor of eukaryotes.
Organism | Taxonomy | Gene | Similarity | Type | Details |
---|---|---|---|---|---|
Chimpanzee (Pan troglodytes) |
Mammalia | LOC735913 30 |
|
||
CYB5A 31 |
|
OneToOne | |||
Dog (Canis familiaris) |
Mammalia | CYB5A 30 31 |
|
OneToMany | |
Rat (Rattus norvegicus) |
Mammalia | Cyb5a 30 |
|
||
Mouse (Mus musculus) |
Mammalia | Cyb5 30 31 |
|
OneToOne | |
Cyb5a 17 |
|
||||
Cow (Bos Taurus) |
Mammalia | CYB5A 30 31 |
|
OneToOne | |
Oppossum (Monodelphis domestica) |
Mammalia | CYB5A 31 |
|
OneToOne | |
Platypus (Ornithorhynchus anatinus) |
Mammalia | CYB5A 31 |
|
OneToOne | |
Chicken (Gallus gallus) |
Aves | CYB5A 30 31 |
|
OneToOne | |
Lizard (Anolis carolinensis) |
Reptilia | CYB5A 31 |
|
OneToOne | |
Tropical Clawed Frog (Silurana tropicalis) |
Amphibia | cyb5a 30 |
|
||
Zebrafish (Danio rerio) |
Actinopterygii | cyb5a 30 31 |
|
OneToOne | |
African malaria mosquito (Anopheles gambiae) |
Insecta | AgaP_AGAP007121 30 |
|
||
Fruit Fly (Drosophila melanogaster) |
Insecta | Cyt-b5 30 31 |
|
ManyToMany | |
CG3566 31 |
|
ManyToMany | |||
CG5157 31 |
|
ManyToMany | |||
CG6870 31 |
|
ManyToMany | |||
Worm (Caenorhabditis elegans) |
Secernentea | cytb-5.1 30 31 |
|
ManyToMany | |
cytb-5.2 31 |
|
ManyToMany | |||
Baker's yeast (Saccharomyces cerevisiae) |
Saccharomycetes | CYB5 31 |
|
OneToMany | |
Thale Cress (Arabidopsis thaliana) |
eudicotyledons | CB5-E 30 |
|
||
Rice (Oryza sativa) |
Liliopsida | Os10g0518200 30 |
|
||
Sea Squirt (Ciona savignyi) |
Ascidiacea | CSA.7428 31 |
|
OneToMany |
SNP ID | Clinical significance and condition | Chr 18 pos | Variation | AA Info | Type |
---|---|---|---|---|---|
rs1555688659 | Likely Pathogenic: Methemoglobinemia type 4. Methemoglobinemia and ambiguous genitalia (METAG) [MIM:250790] | 74,263,476(-) |
T/Ap.His44Leu NM_148923.4(CYB5A):c.131A>T (p.His44Leu) |
MISSENSE | |
rs1555691399 | Likely Pathogenic: Methemoglobinemia type 4 | 74,291,795(-) |
C/T NM_148923.4(CYB5A):c.81G>A (p.Trp27Ter) |
NONSENSE | |
rs201137874 | Likely Benign: not provided | 74,260,927(-) |
T/C NM_148923.4(CYB5A):c.276A>G (p.Leu92=) |
SYNONYMOUS_VARIANT,INTRON | |
rs201644903 | Likely Benign: not provided | 74,291,851(-) |
C/A NM_148923.4(CYB5A):c.25G>T (p.Val9Leu) |
MISSENSE | |
rs75160992 | Uncertain Significance: not specified | 74,291,863(-) |
A/C NM_148923.4(CYB5A):c.13T>G (p.Ser5Ala) |
MISSENSE |
Variant ID | Type | Subtype | PubMed ID |
---|---|---|---|
esv2717341 | CNV | deletion | 23290073 |
esv3643111 | CNV | loss | 21293372 |
esv3643112 | CNV | loss | 21293372 |
nsv2356 | CNV | insertion | 18451855 |
nsv519101 | CNV | loss | 19592680 |
Disorder | Aliases | PubMed IDs |
---|---|---|
methemoglobinemia and ambiguous genitalia |
|
|
congenital methemoglobinemia |
|
|
adrenal hyperplasia, congenital, due to 17-alpha-hydroxylase deficiency |
|
|
methemoglobinemia |
|
|
antley-bixler syndrome |
|
|