Gene
Entrez ID Entrez Gene ID - the GENE ID in NCBI Gene database.
25974
Gene name Gene Name - the full gene name approved by the HGNC.
Metabolism of cobalamin associated C
Gene symbol Gene Symbol - the official gene symbol approved by the HGNC.
MMACHC
Synonyms (NCBI Gene) Gene synonyms aliases
cblC
Chromosome Chromosome number
1
Chromosome location Chromosomal Location - indicates the cytogenetic location of the gene or region on the chromosome.
1p34.1
Summary Summary of gene provided in NCBI Entrez Gene.
The exact function of the protein encoded by this gene is not known, however, its C-terminal region shows similarity to TonB, a bacterial protein involved in energy transduction for cobalamin (vitamin B12) uptake. Hence, it is postulated that this protein
SNPs SNP information provided by dbSNP.
SNP ID Visualize variation Clinical significance Consequence
rs121918240 T>C Pathogenic-likely-pathogenic Missense variant, coding sequence variant
rs121918241 C>A,T Pathogenic Stop gained, synonymous variant, coding sequence variant
rs121918242 C>T Pathogenic Stop gained, coding sequence variant
rs121918243 G>A Likely-pathogenic, pathogenic Missense variant, coding sequence variant
rs140522266 G>A,C Pathogenic, likely-pathogenic, pathogenic-likely-pathogenic Coding sequence variant, missense variant
miRNA miRNA information provided by mirtarbase database.
miRTarBase ID miRNA Experiments Reference
MIRT027474 hsa-miR-98-5p Microarray 19088304
MIRT051928 hsa-let-7b-5p CLASH 23622248
MIRT038225 hsa-miR-342-5p CLASH 23622248
MIRT1152816 hsa-miR-105 CLIP-seq
MIRT1152817 hsa-miR-1185 CLIP-seq
Transcription factors
Transcription factor Regulation Reference
HCFC1 Unknown 24011988
Gene ontology (GO) Gene ontology information of associated ontologies with gene provided by GO database.
GO ID Ontology Definition Evidence Reference
GO:0005515 Function Protein binding IPI 23415655, 23825108, 25535791, 27771510, 33961781
GO:0005737 Component Cytoplasm IBA
GO:0005737 Component Cytoplasm IDA 23270877
GO:0005737 Component Cytoplasm IEA
GO:0005829 Component Cytosol IDA 23270877
Other IDs Other ids provides unique ids of gene in databases such as OMIM, HGNC, ENSEMBLE.
MIM HGNC e!Ensembl
609831 24525 ENSG00000132763
Protein
UniProt ID Q9Y4U1
Protein name Cyanocobalamin reductase / alkylcobalamin dealkylase (Alkylcobalamin:glutathione S-alkyltransferase) (EC 2.5.1.151) (CblC) (Cyanocobalamin reductase (cyanide-eliminating)) (EC 1.16.1.6) (Methylmalonic aciduria and homocystinuria type C protein) (MMACHC)
Protein function Cobalamin (vitamin B12) cytosolic chaperone that catalyzes the reductive decyanation of cyanocob(III)alamin (cyanocobalamin, CNCbl) to yield cob(II)alamin and cyanide, using FAD or FMN as cofactors and NADPH as cosubstrate (PubMed:18779575, PubM
PDB 3SBY , 3SBZ , 3SC0 , 3SOM , 5UOS , 7WUZ
Family and domains

Pfam

Accession ID Position in sequence Description Type
PF16690 MMACHC 20 234 Methylmalonic aciduria and homocystinuria type C family Domain
Tissue specificity TISSUE SPECIFICITY: Widely expressed. Expressed at higher level in fetal liver. Also expressed in spleen, lymph node, thymus and bone marrow. Weakly or not expressed in peripheral blood leukocytes. {ECO:0000269|PubMed:16311595}.
Sequence
Sequence length 282
Interactions View interactions
Pathways Pathway information has different metabolic/signaling pathways associated with genes.
  KEGG   Reactome
  Vitamin digestion and absorption
Cobalamin transport and metabolism
  Cobalamin (Cbl, vitamin B12) transport and metabolism
Defective MMADHC causes methylmalonic aciduria and homocystinuria type cblD
Defective MMACHC causes methylmalonic aciduria and homocystinuria type cblC
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Associated diseases Disease associations categorized as Causal (pathogenic variants), Unknown (uncertain genetic evidence), or Text Mining (literature-based associations)
Causal Diseases caused by PATHOGENIC or LIKELY PATHOGENIC variants from ClinVar only
Disease merge term Disease name dbSNP ID References
Methylmalonic acidemia with homocystinuria methylmalonic aciduria and homocystinuria, cblc type, digenic rs398124292, rs1553162317 N/A
Hemolytic Uremic Syndrome Atypical hemolytic-uremic syndrome rs398124292 N/A
Methylmalonic Aciduria Methylmalonic aciduria due to methylmalonyl-CoA mutase deficiency rs121918241, rs121918243 N/A
retinal dystrophy Retinal dystrophy rs200094982 N/A
Unknown Includes: (1) ClinVar NON-pathogenic variants (Uncertain, Benign, Conflicting, VUS), (2) GenCC associations, (3) GWAS associations, (4) CBGDA evidence-based associations. NOTE: Diseases with pathogenic evidence are excluded to avoid conflicts.
Disease merge term Disease name Evidence References Source
Homocystinuria methylmalonic aciduria and homocystinuria type cblC N/A N/A GenCC
Associations from Text Mining Disease associations identified through Pubtator
Disease Name Relationship Type References
Acute Kidney Injury Associate 38178022
Aortic Dissection Associate 38178022
Ataxia Associate 33804237
Brain Diseases Associate 32746869
Carcinoma Renal Cell Associate 25230976
Cardiovascular Diseases Associate 21497120, 40441036
Cognitive Dysfunction Associate 35660814
Congenital Plasminogen Deficiency Associate 37611544
Developmental Disabilities Associate 32746869
Dyspnea Associate 29581464