Gene Gene information from NCBI Gene database.
Entrez ID 25974
Gene name Metabolism of cobalamin associated C
Gene symbol MMACHC
Synonyms (NCBI Gene)
cblC
Chromosome 1
Chromosome location 1p34.1
Summary 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.
61
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.
465
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 factors information provided by TRRUST V2 database.
1
Transcription factor Regulation Reference
HCFC1 Unknown 24011988
Gene ontology (GO) Gene Ontology (GO) annotations describing the biological processes, molecular functions, and cellular components associated with a gene.
28
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 identifiers for this gene in OMIM, HGNC, and Ensembl databases.
MIM HGNC e!Ensembl
609831 24525 ENSG00000132763
Protein Protein information from UniProt database.
UniProt ID Unique identifier for the protein in the UniProt database. Click to view detailed protein information.
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
Associated diseases Disease associations from ClinVar (causal & non-causal) and other databases (OMIM, Orphanet, GWAS, etc.).
25
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
Abnormality of metabolism/homeostasis Pathogenic rs121918241 RCV001813934
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
Atypical hemolytic-uremic syndrome Pathogenic rs398124292 RCV001328208
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
cblC type of combined methylmalonic aciduria and homocystinuria Pathogenic rs121918241 RCV001250251
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
Cobalamin C disease Pathogenic; Likely pathogenic rs755843695, rs370596113, rs1305170860, rs398124295, rs398124296, rs765960386, rs2149323203, rs756413692, rs1553162934, rs1399932916, rs1363738186, rs2149323575, rs2149323826, rs1343936481, rs2149323805
View all (121 more)
RCV001323234
RCV000340205
RCV000266579
RCV000383499
RCV000272939
View all (148 more)
★★★★★
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
ATYPICAL HEMOLYTIC UREMIC SYNDROME Disgenet
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Cervical cancer Likely benign ClinVar
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Gastric cancer Likely benign ClinVar
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
METHYLMALONIC ACIDEMIA WITH HOMOCYSTINURIA CTD, Disgenet
CTD, Disgenet
★★☆☆☆
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
Adenocarcinoma of lung (disorder) Lung adenocarcinoma BEFREE 29945960
★☆☆☆☆
Found in Text Mining only
Alzheimer Disease Alzheimer disease Pubtator 37386009 Associate
★☆☆☆☆
Found in Text Mining only
Alzheimer`s Disease Alzheimer disease GWASCAT_DG 29777097, 30617256
★☆☆☆☆
Found in Text Mining only
Anemia Megaloblastic Megaloblastic anemia Pubtator 21497120 Associate
★☆☆☆☆
Found in Text Mining only
Anemia, Megaloblastic Anemia BEFREE 23825108
★☆☆☆☆
Found in Text Mining only
Anemia, Megaloblastic Anemia HPO_DG
★☆☆☆☆
Found in Text Mining only
Anorexia Anorexia HPO_DG
★☆☆☆☆
Found in Text Mining only
Aortic Dissection Aortic dissection Pubtator 38178022 Associate
★☆☆☆☆
Found in Text Mining only
Ataxia Ataxia Pubtator 33804237 Associate
★☆☆☆☆
Found in Text Mining only
Brain Diseases Brain disease Pubtator 32746869 Associate
★☆☆☆☆
Found in Text Mining only