Gene Gene information from NCBI Gene database.
Entrez ID 1727
Gene name Cytochrome b5 reductase 3
Gene symbol CYB5R3
Synonyms (NCBI Gene)
B5RDIA1
Chromosome 22
Chromosome location 22q13.2
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 cy
SNPs SNP information provided by dbSNP.
26
SNP ID Visualize variation Clinical significance Consequence
rs61732609 G>A Pathogenic Stop gained, coding sequence variant
rs121965006 A>G Pathogenic Coding sequence variant, missense variant
rs121965007 C>G,T Pathogenic Coding sequence variant, missense variant
rs121965008 A>G Pathogenic Coding sequence variant, missense variant
rs121965009 C>T Pathogenic Coding sequence variant, missense variant
miRNA miRNA information provided by mirtarbase database.
684
miRTarBase ID miRNA Experiments Reference
MIRT027454 hsa-miR-98-5p Microarray 19088304
MIRT049610 hsa-miR-92a-3p CLASH 23622248
MIRT043904 hsa-miR-378a-3p CLASH 23622248
MIRT042354 hsa-miR-484 CLASH 23622248
MIRT037551 hsa-miR-744-5p CLASH 23622248
Gene ontology (GO) Gene Ontology (GO) annotations describing the biological processes, molecular functions, and cellular components associated with a gene.
41
GO ID Ontology Definition Evidence Reference
GO:0004128 Function Cytochrome-b5 reductase activity, acting on NAD(P)H IBA
GO:0004128 Function Cytochrome-b5 reductase activity, acting on NAD(P)H IDA 1400360, 9639531, 36543799
GO:0004128 Function Cytochrome-b5 reductase activity, acting on NAD(P)H IEA
GO:0004128 Function Cytochrome-b5 reductase activity, acting on NAD(P)H IMP 1898726, 2019583, 8119939, 10807796, 15953014
GO:0004128 Function Cytochrome-b5 reductase activity, acting on NAD(P)H TAS 1400360
Other IDs Other IDs provides unique identifiers for this gene in OMIM, HGNC, and Ensembl databases.
MIM HGNC e!Ensembl
613213 2873 ENSG00000100243
Protein Protein information from UniProt database.
UniProt ID Unique identifier for the protein in the UniProt database. Click to view detailed protein information.
P00387
Protein name NADH-cytochrome b5 reductase 3 (B5R) (Cytochrome b5 reductase) (EC 1.6.2.2) (Diaphorase-1)
Protein function Catalyzes the reduction of two molecules of cytochrome b5 using NADH as the electron donor. {ECO:0000269|PubMed:10807796, ECO:0000269|PubMed:1400360, ECO:0000269|PubMed:15953014, ECO:0000269|PubMed:1898726, ECO:0000269|PubMed:2019583, ECO:000026
PDB 1UMK , 7THG , 7TNV , 7TSW , 7W3O
Family and domains

Pfam

Accession ID Position in sequence Description Type
PF00970 FAD_binding_6 44 151 Oxidoreductase FAD-binding domain Domain
PF00175 NAD_binding_1 177 285 Oxidoreductase NAD-binding domain Domain
Tissue specificity TISSUE SPECIFICITY: [Isoform 2]: Expressed at late stages of erythroid maturation. {ECO:0000269|PubMed:9639531}.
Sequence
Sequence length 301
Interactions View interactions
Pathways Pathway information has different metabolic/signaling pathways associated with genes.
  KEGG  Reactome
  Biosynthesis of various nucleotide sugars   Vitamin C (ascorbate) metabolism
Phase I - Functionalization of compounds
Neutrophil degranulation
Associated diseases Disease associations from ClinVar (causal & non-causal) and other databases (OMIM, Orphanet, GWAS, etc.).
30
Evidence Score: ★☆☆☆☆  Gene-disease association found in Text Mining only ★★☆☆☆  Found in Text Mining and Unknown/Other Associations ★★★☆☆  Reported in Unknown/Other Associations across ≥2 Sources ★★★★☆  ClinVar: Pathogenic/Likely Pathogenic (<5 Variants) ★★★★★  ClinVar: Pathogenic/Likely Pathogenic (≥5 Variants)
Causal Diseases associated with Pathogenic or Likely Pathogenic variants in ClinVar
Phenotype Name Clinical Significance dbSNP ID RCV Accession Evidence Score
Central core myopathy Likely pathogenic; Pathogenic rs144071404 RCV004813125
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
CYB5R3-related disorder Likely pathogenic; Pathogenic rs543277216, rs121965007 RCV003394253
RCV003415596
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
Deficiency of cytochrome-b5 reductase Pathogenic; Likely pathogenic rs1223829978, rs750819571, rs543277216, rs1161477501, rs794728013, rs61732609, rs121965016, rs121965017, rs763259379, rs1454054574, rs144071404, rs1601938489 RCV006258073
RCV001527675
RCV001780904
RCV003485758
RCV000986216
View all (7 more)
★★★★★
ClinVar: Pathogenic / Likely Pathogenic (≥5 Variants)
Hereditary methemoglobinemia Pathogenic; Likely pathogenic rs121965015, rs144071404 RCV003764501
RCV000601950
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
Unknown / Other Associations ClinVar entries with uncertain/conflicting evidence, and associations from other databases (OMIM, Orphanet, GWAS, etc.) where the gene is not established as causal.
Phenotype Name Clinical Significance Source Evidence Score
Acute myeloid leukemia Benign ClinVar
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
AUTOSOMAL DOMINANT CONGENITAL MYOPATHY-1A Disgenet
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Cervical cancer Benign; Likely benign ClinVar
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Cholangiocarcinoma Benign; Likely benign ClinVar
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Associations from Text Mining Disease associations identified through text mining
Disease Name Disease (Merged) Source PMID Relationship Type Evidence Score
Alzheimer Disease Alzheimer disease Pubtator 32711556, 37715200 Associate
★☆☆☆☆
Found in Text Mining only
Amyloidosis Amyloidosis Pubtator 32711556 Associate
★☆☆☆☆
Found in Text Mining only
Anemia Anemia Pubtator 32697331 Associate
★☆☆☆☆
Found in Text Mining only
Anemia Sickle Cell Sickle cell anemia Pubtator 32697331 Associate
★☆☆☆☆
Found in Text Mining only
Anemia, Sickle Cell Anemia BEFREE 31821458
★☆☆☆☆
Found in Text Mining only
Basal Ganglia Diseases Basal ganglia disease Pubtator 30614390 Associate
★☆☆☆☆
Found in Text Mining only
Biventricular hypertrophy Biventricular hypertrophy BEFREE 31821458
★☆☆☆☆
Found in Text Mining only
Breast Carcinoma Breast Carcinoma BEFREE 25225034, 26351264
★☆☆☆☆
Found in Text Mining only
Breast Neoplasms Breast neoplasm Pubtator 25225034 Associate
★☆☆☆☆
Found in Text Mining only
Cardiomyopathy Familial Restrictive 1 Cardiomyopathy Pubtator 9695975 Associate
★☆☆☆☆
Found in Text Mining only