Cyb5b cytochrome b5 type B [Mus musculus (house mouse)] - Gene

Summary

Official Symbol: Cyb5bprovided by MGI
Official Full Name: cytochrome b5 type Bprovided by MGI
Primary source: MGI:MGI:1913677
See related: Ensembl:ENSMUSG00000031924 AllianceGenome:MGI:1913677
Gene type: protein coding
RefSeq status: VALIDATED
Organism: Mus musculus
Lineage: Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Glires; Rodentia; Myomorpha; Muroidea; Muridae; Murinae; Mus; Mus
Also known as: Cyb5m; 1810044O22Rik
Summary: Predicted to enable enzyme activator activity and heme binding activity. Predicted to contribute to nitrite reductase (NO-forming) activity. Predicted to be involved in nitric oxide biosynthetic process. Located in mitochondrial inner membrane. Is expressed in several structures, including adrenal gland; craniocervical region bone; gut; neural retina; and urinary system. Orthologous to human CYB5B (cytochrome b5 type B). [provided by Alliance of Genome Resources, Nov 2024]
Expression: Ubiquitous expression in adrenal adult (RPKM 115.2), genital fat pad adult (RPKM 95.6) and 28 other tissues See more
Orthologs: human all
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Genomic context

Location:: 8 D3; 8 53.71 cM

Exon count:: 5

Annotation release	Status	Assembly	Chr	Location
RS_2024_02	current	GRCm39 (GCF_000001635.27)	8	NC_000074.7 (107877293..107914102)
108.20200622	previous assembly	GRCm38.p6 (GCF_000001635.26)	8	NC_000074.6 (107150661..107187470)

Chromosome 8 - NC_000074.7 Genomic Context describing neighboring genes

Genomic regions, transcripts, and products

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Genomic Sequence:

Go to nucleotide: Graphics FASTA GenBank

Expression

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See details

Project title: Mouse ENCODE transcriptome data Mouse ENCODE transcriptome data
Description: RNA profiling data sets generated by the Mouse ENCODE project.
BioProject: PRJNA66167
Publication: PMID 25409824
Analysis date: n/a

Bibliography

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GeneRIFs: Gene References Into Functions

What's a GeneRIF?

The presence of a novel reductive enzyme system of importance for lipid synthesis that is exclusively localized to the outer mitochondrial membrane and is composed of CYB5B, MOSC2, and a third unknown component (a CYB5B reductase).
Title: Amidoxime reductase system containing cytochrome b5 type B (CYB5B) and MOSC2 is of importance for lipid synthesis in adipocyte mitochondria.
microsomal cytochrome b5 can play a major role in the in vivo metabolism of certain drugs and chemicals but in a P450- and substrate-dependent manner
Title: Defining the in Vivo Role for cytochrome b5 in cytochrome P450 function through the conditional hepatic deletion of microsomal cytochrome b5.
microsomal cytochrome b5 interacts with neuronal calcium sensor protein visinin-like protein-3 in a Ca2+-dependent manner
Title: Neuronal calcium sensor protein visinin-like protein-3 interacts with microsomal cytochrome b5 in a Ca2+-dependent manner.
the hydroxylation of dihydroceramide: sphinganine C-4 requires complex formation between Des2 and mb5 via their membrane-spanning domains and electron transfer from NADH to the substrate via the reduction of mb5 by b5R
Title: Dihydroceramide:sphinganine C-4-hydroxylation requires Des2 hydroxylase and the membrane form of cytochrome b5.

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Variation

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Alleles

Alleles of this type are documented at Mouse Genome Informatics (MGI)

Endonuclease-mediated (3)
Gene trapped (1)
Targeted (1)

Interactions

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Products	Interactant	Other Gene	Complex	Source	Pubs	Description

General gene information

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Gene Ontology Provided by MGI

Function	Evidence Code	Pubs
enables enzyme activator activity	IEA Inferred from Electronic Annotation more info
enables enzyme activator activity	ISO Inferred from Sequence Orthology more info
enables heme binding	IBA Inferred from Biological aspect of Ancestor more info
enables heme binding	IEA Inferred from Electronic Annotation more info
enables heme binding	ISO Inferred from Sequence Orthology more info
enables metal ion binding	IEA Inferred from Electronic Annotation more info
enables nitrite reductase (NO-forming) activity	IEA Inferred from Electronic Annotation more info
contributes_to nitrite reductase (NO-forming) activity	ISO Inferred from Sequence Orthology more info

Process	Evidence Code	Pubs
involved_in nitric oxide biosynthetic process	IEA Inferred from Electronic Annotation more info
involved_in nitric oxide biosynthetic process	ISO Inferred from Sequence Orthology more info

Component	Evidence Code	Pubs
is_active_in intracellular membrane-bounded organelle	IBA Inferred from Biological aspect of Ancestor more info
located_in mitochondrial inner membrane	HDA more info	PubMed
is_active_in mitochondrial outer membrane	IBA Inferred from Biological aspect of Ancestor more info
located_in mitochondrial outer membrane	IEA Inferred from Electronic Annotation more info
located_in mitochondrial outer membrane	ISO Inferred from Sequence Orthology more info
located_in mitochondrion	HDA more info	PubMed
part_of nitric-oxide synthase complex	IEA Inferred from Electronic Annotation more info
part_of nitric-oxide synthase complex	ISO Inferred from Sequence Orthology more info

General protein information

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Preferred Names: cytochrome b5 type B

NCBI Reference Sequences (RefSeq)

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RefSeqs maintained independently of Annotated Genomes

These reference sequences exist independently of genome builds. Explain

These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.

mRNA and Protein(s)

NM_025558.5 → NP_079834.2 cytochrome b5 type B precursor

See identical proteins and their annotated locations for NP_079834.2

Status: VALIDATED

Source sequence(s)

AC125207

Consensus CDS

CCDS22647.1

UniProtKB/Swiss-Prot

Q9CQX2, Q9D1M6, Q9D8R3

UniProtKB/TrEMBL

Q3TH64, Q3TN44

Related

ENSMUSP00000034400.4, ENSMUST00000034400.5

Conserved Domains (2) summary

pfam00173
Location:22 → 95

Cyt-b5; Cytochrome b5-like Heme/Steroid binding domain

cl00200
Location:119 → 139

MIP; Major intrinsic protein (MIP) superfamily. Members of the MIP superfamily function as membrane channels that selectively transport water, small neutral molecules, and ions out of and between cells. The channel proteins share a common fold: the N-terminal ...