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Guidelines

MIRAGE

cytochrome b5 reductase 4

Summary

Gene Symbol

Cyb5r4

Organism

Mus musculus (house mouse)

External Links

NCBI Gene

266690

PubChem

266690

Alliance of Genome Resources

MGI:2386848

Annotation

Keyword

Acetylation
Alternative splicing
Endoplasmic reticulum
FAD
Heme
NAD
Oxidoreductase
Reference proteome

Proteins

Displaying 1 entry
UniProt	Protein Name
Q3TDX8	Flavohemoprotein b5/b5R N-terminal cytochrome b5 and cytochrome b5 oxidoreductase domain-containing protein cb5/cb5R

Annotation information from UniProt.

Gene Ontology (GO)

Displaying entries **1 - 5** of 10 in total

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GO Term	Evidence Code	PMID
NADP metabolic process	ISO
superoxide metabolic process	ISO
superoxide metabolic process	IBA
superoxide metabolic process	IEA
insulin secretion	IMP	15247412

GO Hierarchy

biological process

metabolic process [inference]

nitrogen compound metabolic process [inference]

cellular nitrogen compound metabolic process [inference]

nucleobase-containing compound metabolic process [inference]

nucleobase-containing small molecule metabolic process [inference]

nucleoside phosphate metabolic process [inference]

nucleotide metabolic process [inference]

purine nucleotide metabolic process [inference]

NADP metabolic process

pyridine nucleotide metabolic process [inference]

nicotinamide nucleotide metabolic process [inference]

NADP metabolic process

purine-containing compound metabolic process [inference]

purine nucleotide metabolic process [inference]

NADP metabolic process

pyridine-containing compound metabolic process [inference]

pyridine nucleotide metabolic process [inference]

nicotinamide nucleotide metabolic process [inference]

NADP metabolic process

organonitrogen compound metabolic process [inference]

tetrapyrrole metabolic process [inference]

porphyrin-containing compound metabolic process [inference]

heme metabolic process

purine-containing compound metabolic process [inference]

purine nucleotide metabolic process [inference]

NADP metabolic process

pyridine-containing compound metabolic process [inference]

pyridine nucleotide metabolic process [inference]

nicotinamide nucleotide metabolic process [inference]

NADP metabolic process

pigment metabolic process [inference]

heme metabolic process

cellular metabolic process [inference]

cellular aromatic compound metabolic process [inference]

nucleobase-containing compound metabolic process [inference]

nucleobase-containing small molecule metabolic process [inference]

nucleoside phosphate metabolic process [inference]

nucleotide metabolic process [inference]

purine nucleotide metabolic process [inference]

NADP metabolic process

pyridine nucleotide metabolic process [inference]

nicotinamide nucleotide metabolic process [inference]

NADP metabolic process

tetrapyrrole metabolic process [inference]

porphyrin-containing compound metabolic process [inference]

heme metabolic process

purine-containing compound metabolic process [inference]

purine nucleotide metabolic process [inference]

NADP metabolic process

phosphorus metabolic process [inference]

phosphate-containing compound metabolic process [inference]

nucleoside phosphate metabolic process [inference]

nucleotide metabolic process [inference]

purine nucleotide metabolic process [inference]

NADP metabolic process

pyridine nucleotide metabolic process [inference]

nicotinamide nucleotide metabolic process [inference]

NADP metabolic process

organophosphate metabolic process [inference]

nucleoside phosphate metabolic process [inference]

nucleotide metabolic process [inference]

purine nucleotide metabolic process [inference]

NADP metabolic process

pyridine nucleotide metabolic process [inference]

nicotinamide nucleotide metabolic process [inference]

NADP metabolic process

cellular nitrogen compound metabolic process [inference]

nucleobase-containing compound metabolic process [inference]

nucleobase-containing small molecule metabolic process [inference]

nucleoside phosphate metabolic process [inference]

nucleotide metabolic process [inference]

purine nucleotide metabolic process [inference]

NADP metabolic process

pyridine nucleotide metabolic process [inference]

nicotinamide nucleotide metabolic process [inference]

NADP metabolic process

purine-containing compound metabolic process [inference]

purine nucleotide metabolic process [inference]

NADP metabolic process

pyridine-containing compound metabolic process [inference]

pyridine nucleotide metabolic process [inference]

nicotinamide nucleotide metabolic process [inference]

NADP metabolic process

heterocycle metabolic process [inference]

nucleobase-containing compound metabolic process [inference]

nucleobase-containing small molecule metabolic process [inference]

nucleoside phosphate metabolic process [inference]

nucleotide metabolic process [inference]

purine nucleotide metabolic process [inference]

NADP metabolic process

pyridine nucleotide metabolic process [inference]

nicotinamide nucleotide metabolic process [inference]

NADP metabolic process

tetrapyrrole metabolic process [inference]

porphyrin-containing compound metabolic process [inference]

heme metabolic process

purine-containing compound metabolic process [inference]

purine nucleotide metabolic process [inference]

NADP metabolic process

pyridine-containing compound metabolic process [inference]

pyridine nucleotide metabolic process [inference]

nicotinamide nucleotide metabolic process [inference]

NADP metabolic process

reactive oxygen species metabolic process

superoxide metabolic process

primary metabolic process [inference]

nucleobase-containing compound metabolic process [inference]

nucleobase-containing small molecule metabolic process [inference]

nucleoside phosphate metabolic process [inference]

nucleotide metabolic process [inference]

purine nucleotide metabolic process [inference]

NADP metabolic process

pyridine nucleotide metabolic process [inference]

nicotinamide nucleotide metabolic process [inference]

NADP metabolic process

small molecule metabolic process [inference]

nucleobase-containing small molecule metabolic process [inference]

nucleoside phosphate metabolic process [inference]

nucleotide metabolic process [inference]

purine nucleotide metabolic process [inference]

NADP metabolic process

pyridine nucleotide metabolic process [inference]

nicotinamide nucleotide metabolic process [inference]

NADP metabolic process

organic substance metabolic process [inference]

organophosphate metabolic process [inference]

nucleoside phosphate metabolic process [inference]

nucleotide metabolic process [inference]

purine nucleotide metabolic process [inference]

NADP metabolic process

pyridine nucleotide metabolic process [inference]

nicotinamide nucleotide metabolic process [inference]

NADP metabolic process

organic cyclic compound metabolic process [inference]

nucleobase-containing compound metabolic process [inference]

nucleobase-containing small molecule metabolic process [inference]

nucleoside phosphate metabolic process [inference]

nucleotide metabolic process [inference]

purine nucleotide metabolic process [inference]

NADP metabolic process

pyridine nucleotide metabolic process [inference]

nicotinamide nucleotide metabolic process [inference]

NADP metabolic process

tetrapyrrole metabolic process [inference]

porphyrin-containing compound metabolic process [inference]

heme metabolic process

purine-containing compound metabolic process [inference]

purine nucleotide metabolic process [inference]

NADP metabolic process

pyridine-containing compound metabolic process [inference]

pyridine nucleotide metabolic process [inference]

nicotinamide nucleotide metabolic process [inference]

NADP metabolic process

organonitrogen compound metabolic process [inference]

tetrapyrrole metabolic process [inference]

porphyrin-containing compound metabolic process [inference]

heme metabolic process

purine-containing compound metabolic process [inference]

purine nucleotide metabolic process [inference]

NADP metabolic process

pyridine-containing compound metabolic process [inference]

pyridine nucleotide metabolic process [inference]

nicotinamide nucleotide metabolic process [inference]

NADP metabolic process

cellular process [inference]

cellular metabolic process [inference]

cellular aromatic compound metabolic process [inference]

nucleobase-containing compound metabolic process [inference]

nucleobase-containing small molecule metabolic process [inference]

nucleoside phosphate metabolic process [inference]

nucleotide metabolic process [inference]

purine nucleotide metabolic process [inference]

NADP metabolic process

pyridine nucleotide metabolic process [inference]

nicotinamide nucleotide metabolic process [inference]

NADP metabolic process

tetrapyrrole metabolic process [inference]

porphyrin-containing compound metabolic process [inference]

heme metabolic process

purine-containing compound metabolic process [inference]

purine nucleotide metabolic process [inference]

NADP metabolic process

phosphorus metabolic process [inference]

phosphate-containing compound metabolic process [inference]

nucleoside phosphate metabolic process [inference]

nucleotide metabolic process [inference]

purine nucleotide metabolic process [inference]

NADP metabolic process

pyridine nucleotide metabolic process [inference]

nicotinamide nucleotide metabolic process [inference]

NADP metabolic process

organophosphate metabolic process [inference]

nucleoside phosphate metabolic process [inference]

nucleotide metabolic process [inference]

purine nucleotide metabolic process [inference]

NADP metabolic process

pyridine nucleotide metabolic process [inference]

nicotinamide nucleotide metabolic process [inference]

NADP metabolic process

cellular nitrogen compound metabolic process [inference]

nucleobase-containing compound metabolic process [inference]

nucleobase-containing small molecule metabolic process [inference]

nucleoside phosphate metabolic process [inference]

nucleotide metabolic process [inference]

purine nucleotide metabolic process [inference]

NADP metabolic process

pyridine nucleotide metabolic process [inference]

nicotinamide nucleotide metabolic process [inference]

NADP metabolic process

purine-containing compound metabolic process [inference]

purine nucleotide metabolic process [inference]

NADP metabolic process

pyridine-containing compound metabolic process [inference]

pyridine nucleotide metabolic process [inference]

nicotinamide nucleotide metabolic process [inference]

NADP metabolic process

heterocycle metabolic process [inference]

nucleobase-containing compound metabolic process [inference]

nucleobase-containing small molecule metabolic process [inference]

nucleoside phosphate metabolic process [inference]

nucleotide metabolic process [inference]

purine nucleotide metabolic process [inference]

NADP metabolic process

pyridine nucleotide metabolic process [inference]

nicotinamide nucleotide metabolic process [inference]

NADP metabolic process

tetrapyrrole metabolic process [inference]

porphyrin-containing compound metabolic process [inference]

heme metabolic process

purine-containing compound metabolic process [inference]

purine nucleotide metabolic process [inference]

NADP metabolic process

pyridine-containing compound metabolic process [inference]

pyridine nucleotide metabolic process [inference]

nicotinamide nucleotide metabolic process [inference]

NADP metabolic process

reactive oxygen species metabolic process

superoxide metabolic process

cellular developmental process [inference]

cell development

cellular localization [inference]

cellular macromolecule localization [inference]

protein localization [inference]

establishment of protein localization [inference]

protein transport [inference]

protein secretion [inference]

insulin secretion

establishment of protein localization to extracellular region [inference]

protein secretion [inference]

insulin secretion

protein localization to extracellular region [inference]

establishment of protein localization to extracellular region [inference]

protein secretion [inference]

insulin secretion

export from cell [inference]

secretion by cell [inference]

protein secretion [inference]

insulin secretion

signal release [inference]

hormone secretion [inference]

peptide hormone secretion [inference]

insulin secretion

developmental process [inference]

anatomical structure development [inference]

cell development

cellular developmental process [inference]

cell development

homeostatic process [inference]

chemical homeostasis [inference]

carbohydrate homeostasis [inference]

glucose homeostasis

response to stimulus [inference]

response to chemical [inference]

response to antibiotic

localization [inference]

macromolecule localization [inference]

cellular macromolecule localization [inference]

protein localization [inference]

establishment of protein localization [inference]

protein transport [inference]

protein secretion [inference]

insulin secretion

establishment of protein localization to extracellular region [inference]

protein secretion [inference]

insulin secretion

protein localization to extracellular region [inference]

establishment of protein localization to extracellular region [inference]

protein secretion [inference]

insulin secretion

establishment of localization [inference]

transport [inference]

hormone transport [inference]

hormone secretion [inference]

peptide hormone secretion [inference]

insulin secretion

secretion [inference]

peptide secretion [inference]

peptide hormone secretion [inference]

insulin secretion

secretion by cell [inference]

protein secretion [inference]

insulin secretion

signal release [inference]

hormone secretion [inference]

peptide hormone secretion [inference]

insulin secretion

organic substance transport [inference]

protein transport [inference]

protein secretion [inference]

insulin secretion

peptide transport [inference]

peptide secretion [inference]

peptide hormone secretion [inference]

insulin secretion

nitrogen compound transport [inference]

protein transport [inference]

protein secretion [inference]

insulin secretion

amide transport [inference]

peptide transport [inference]

peptide secretion [inference]

peptide hormone secretion [inference]

insulin secretion

export from cell [inference]

secretion by cell [inference]

protein secretion [inference]

insulin secretion

signal release [inference]

hormone secretion [inference]

peptide hormone secretion [inference]

insulin secretion

establishment of protein localization [inference]

protein transport [inference]

protein secretion [inference]

insulin secretion

establishment of protein localization to extracellular region [inference]

protein secretion [inference]

insulin secretion

cellular localization [inference]

cellular macromolecule localization [inference]

protein localization [inference]

establishment of protein localization [inference]

protein transport [inference]

protein secretion [inference]

insulin secretion

establishment of protein localization to extracellular region [inference]

protein secretion [inference]

insulin secretion

protein localization to extracellular region [inference]

establishment of protein localization to extracellular region [inference]

protein secretion [inference]

insulin secretion

biological regulation [inference]

regulation of biological quality [inference]

regulation of hormone levels [inference]

hormone transport [inference]

hormone secretion [inference]

peptide hormone secretion [inference]

insulin secretion

Displaying entries **1 - 5** of 7 in total

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GO Term	Evidence Code	PMID
cytoplasm	ISO	10611283
cytoplasm	IBA
endoplasmic reticulum	ISO
endoplasmic reticulum	IDA	15131110
endoplasmic reticulum	IBA

GO Hierarchy

cellular component

cellular anatomical entity [inference]

cytoplasm

organelle [inference]

membrane-bounded organelle [inference]

intracellular membrane-bounded organelle [inference]

endoplasmic reticulum

intracellular organelle [inference]

intracellular membrane-bounded organelle [inference]

endoplasmic reticulum

perinuclear region of cytoplasm

Displaying entries **1 - 5** of 12 in total

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GO Term	Evidence Code	PMID
NADPH-hemoprotein reductase activity	ISO
cytochrome-b5 reductase activity, acting on NAD(P)H	ISO	10611283
cytochrome-b5 reductase activity, acting on NAD(P)H	IDA	15131110
cytochrome-b5 reductase activity, acting on NAD(P)H	IBA
protein binding	IPI	14739275

GO Hierarchy

molecular function

catalytic activity [inference]

oxidoreductase activity [inference]

oxidoreductase activity, acting on NAD(P)H [inference]

oxidoreductase activity, acting on NAD(P)H, heme protein as acceptor

oxidoreductase activity, acting on NAD(P)H, oxygen as acceptor [inference]

NAD(P)H oxidase H2O2-forming activity

binding [inference]

protein binding

small molecule binding [inference]

heterocyclic compound binding [inference]

nucleotide binding [inference]

flavin adenine dinucleotide binding

ion binding [inference]

anion binding [inference]

flavin adenine dinucleotide binding

cation binding [inference]

metal ion binding

organic cyclic compound binding [inference]

tetrapyrrole binding [inference]

heme binding

nucleoside phosphate binding [inference]

nucleotide binding [inference]

flavin adenine dinucleotide binding

Gene Ontology information from NCBI Gene and UniProt.

OrthoDB (Group)

Group level

Eukaryota

Group Name

nitrate reductase

Functional Category

C: Energy production and conversion
I: Lipid transport and metabolism
T: Signal transduction mechanisms

Displaying **all 7** entries
Gene Ontology
heme binding
metal ion binding
molybdenum ion binding
molybdopterin cofactor binding
oxidoreductase activity
sulfite oxidase activity
sulfur compound metabolic process

Displaying **all 8** entries
InterPro
Cytochrome b5, heme-binding site
Cytochrome b5-like heme/steroid binding domain superfamily
Cytochrome b5-like heme/steroid binding domain
Eukaryotic molybdopterin oxidoreductase
Immunoglobulin E-set
Moybdenum cofactor oxidoreductase, dimerisation
Oxidoreductase, molybdopterin-binding domain superfamily
Oxidoreductase, molybdopterin-binding domain

Disease

Disease Ontology

Displaying 1 entry
DO ID	Disease Name	Source
DOID:9352	type 2 diabetes mellitus	Alliance of Genome Resources

Ortholog

Displaying entries **71 - 80** of 84 in total

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Species	Gene ID	Alliance of Genome Resources	Orthologous MAtrix
Bos indicus x Bos taurus	113898403		BOBOX27540
Bos indicus x Bos taurus	113898404		BOBOX27540
Vombatus ursinus	114037828		VOMUR08816
Podarcis muralis	114593915		PODMU17917
Echeneis naucrates	115044585		ECHNA28088
Salmo trutta	115176415		SALTR84165
Salarias fasciatus	115397148		SALFA30586
Gadus morhua	115553766		GADMO03165
Sparus aurata	115567700		SPAAU58187
Strigops habroptila	115609443		STRHB16978

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Last updated: December 8, 2025