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CYB5R4
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  • CYB5R4
PROTEIN SUMMARY SECTION OVERVIEW GENE INFORMATION RNA DATA ANTIBODY DATA
GENERAL INFORMATIONi

General description of the gene and the encoded protein(s) using information from HGNC and Ensembl, as well as predictions made by the Human Protein Atlas project.

Gene namei

Official gene symbol, which is typically a short form of the gene name, according to HGNC.

CYB5R4
Synonyms b5+b5R, dJ676J13.1, NCB5OR
Gene descriptioni

Full gene name according to HGNC.

Cytochrome b5 reductase 4
Protein classi

Assigned HPA protein class(es) for the encoded protein(s).

Enzymes
Metabolic proteins
Predicted locationi

All transcripts of all genes have been analyzed regarding the location(s) of corresponding protein based on prediction methods for signal peptides and transmembrane regions.

  • Genes with at least one transcript predicted to encode a secreted protein, according to prediction methods or to UniProt location data, have been further annotated and classified with the aim to determine if the corresponding protein(s) are secreted or actually retained in intracellular locations or membrane-attached.

  • Remaining genes, with no transcript predicted to encode a secreted protein, will be assigned the prediction-based location(s).

The annotated location overrules the predicted location, so that a gene encoding a predicted secreted protein that has been annotated as intracellular will have intracellular as the final location.

Intracellular
Protein evidence Evidence at protein level (all genes)
GENE INFORMATIONi

Gene information from Ensembl and Entrez, as well as links to available gene identifiers are displayed here. Information was retrieved from Ensembl if not indicated otherwise.

Chromosome 6
Cytoband q14.2
Chromosome location (bp) 83859656 - 83967423
Number of transcriptsi

Number of protein-coding transcripts from the gene as defined by Ensembl.

2
Ensembl ENSG00000065615 (version 109)
Entrez gene 51167
HGNC HGNC:20147
UniProt Q7L1T6 (UniProt - Evidence at protein level)
neXtProt NX_Q7L1T6
GeneCards CYB5R4
Antibodypedia CYB5R4 antibodies


PROTEIN FUNCTION
Protein function (UniProt)i

Useful information about the protein provided by UniProt.

NADH-cytochrome b5 reductase involved in endoplasmic reticulum stress response pathway. Plays a critical role in protecting pancreatic beta-cells against oxidant stress, possibly by protecting the cell from excess buildup of reactive oxygen species (ROS). Reduces a variety of substrates in vitro, such as cytochrome c, feericyanide and methemoglobin.... show less
Molecular function (UniProt)i

Keywords assigned by UniProt to proteins due to their particular molecular function.

Oxidoreductase
Ligand (UniProt)i

Keywords assigned by UniProt to proteins because they bind, are associated with, or whose activity is dependent of some molecule.

FAD, Flavoprotein, Heme, Iron, Metal-binding, NAD
Gene summary (Entrez)i

Useful information about the gene from Entrez

NCB5OR is a flavohemoprotein that contains functional domains found in both cytochrome b5 (CYB5A; MIM 613218) and CYB5 reductase (CYB5R3; MIM 613213) (Zhu et al., 1999).[supplied by OMIM, Jan 2010]... show less
PROTEIN INFORMATIONi

The protein information section displays alternative protein-coding transcripts (splice variants) encoded by this gene according to the Ensembl database.

The ENSP identifier links to the Ensembl website protein summary, while the ENST identifier links to the Ensembl website transcript summary for the selected splice variant. The data in the UniProt column can be expanded to show links to all matching UniProt identifiers for this protein.

The protein classes assigned to this protein are shown if expanding the data in the protein class column. Parent protein classes are in bold font and subclasses are listed under the parent class.

The Gene Ontology terms assigned to this protein are listed if expanding the Gene ontology column. The length of the protein (amino acid residues according to Ensembl), molecular mass (kDalton), predicted signal peptide (according to a majority of the signal peptide predictors SPOCTOPUS, SignalP 4.0, and Phobius) and the number of predicted transmembrane region(s) (according to MDM) are also reported.
Splice variant SwissProt TrEMBL Protein class Gene ontology Length & mass Signal peptide
(predicted)
Transmembrane regions
(predicted)
CYB5R4-201
ENSP00000358693
ENST00000369679
A0A0A0MRM6
[Direct mapping] Cytochrome b5 reductase 4
Show all
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0020037 [heme binding]
GO:0046872 [metal ion binding]
Show all
109 aa
12.7 kDa
No 0
CYB5R4-202
ENSP00000358695
ENST00000369681
Q7L1T6
[Direct mapping] Cytochrome b5 reductase 4
Show all
Enzymes
   ENZYME proteins
   Oxidoreductases
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Kim et al 2014)
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0003032 [detection of oxygen]
GO:0004128 [cytochrome-b5 reductase activity, acting on NAD(P)H]
GO:0005783 [endoplasmic reticulum]
GO:0005789 [endoplasmic reticulum membrane]
GO:0006091 [generation of precursor metabolites and energy]
GO:0006801 [superoxide metabolic process]
GO:0015701 [bicarbonate transport]
GO:0016174 [NAD(P)H oxidase H2O2-forming activity]
GO:0016491 [oxidoreductase activity]
GO:0016653 [oxidoreductase activity, acting on NAD(P)H, heme protein as acceptor]
GO:0020037 [heme binding]
GO:0030073 [insulin secretion]
GO:0042593 [glucose homeostasis]
GO:0046677 [response to antibiotic]
GO:0046872 [metal ion binding]
GO:0048468 [cell development]
GO:0048471 [perinuclear region of cytoplasm]
GO:0072593 [reactive oxygen species metabolic process]
Show all
521 aa
59.5 kDa
No 0

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