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 categorized as Causal (Pathogenic/Likely Pathogenic) or Unknown.
736
Causal Diseases associated with Pathogenic or Likely Pathogenic variants in ClinVar
Phenotype Name Clinical Significance dbSNP ID RCV Accession
Abnormality of metabolism/homeostasis Pathogenic rs121918241 RCV001813934
Atypical hemolytic-uremic syndrome Pathogenic rs398124292 RCV001328208
cblC type of combined methylmalonic aciduria and homocystinuria Pathogenic rs121918241 RCV001250251
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
RCV001390500
RCV001390651
RCV001390451
RCV001390854
RCV001389512
RCV001387872
RCV001844375
RCV003600015
RCV001815629
RCV001825111
RCV001867599
RCV002030936
RCV001991647
RCV001932334
RCV001958489
RCV002050458
RCV002002413
RCV002007156
RCV002006628
RCV002007580
RCV001941845
RCV002037976
RCV002003344
RCV001970034
RCV002039287
RCV002041245
RCV000001486
RCV000001487
RCV000001488
RCV000001489
RCV000001490
RCV000148298
RCV000148299
RCV000148300
RCV002306492
RCV002309542
RCV002309550
RCV002307127
RCV003068298
RCV002648152
RCV002648154
RCV002646172
RCV000664762
RCV000671572
RCV000531346
RCV000641155
RCV000190393
RCV000586798
RCV000576585
RCV001004153
RCV001946440
RCV000490478
RCV002811327
RCV002834505
RCV002847753
RCV002889562
RCV002975122
RCV002967840
RCV003049329
RCV003032729
RCV003052324
RCV003155654
RCV000267790
RCV003231051
RCV003389274
RCV000504286
RCV003461865
RCV003470144
RCV003470145
RCV003470146
RCV003470147
RCV003470149
RCV003470150
RCV003470152
RCV003461866
RCV003470153
RCV003470154
RCV003470155
RCV003486326
RCV003496556
RCV003496347
RCV003497071
RCV003494629
RCV003601642
RCV003601751
RCV003602188
RCV003600026
RCV003600040
RCV003600260
RCV003600315
RCV003601276
RCV004576191
RCV004576192
RCV000666093
RCV000023785
RCV000477768
RCV000477781
RCV000641152
RCV000590695
RCV001210411
RCV000667730
RCV000672739
RCV000669122
RCV000669305
RCV000665556
RCV000669370
RCV000668801
RCV000671954
RCV000672749
RCV000674536
RCV000674328
RCV000672551
RCV000668639
RCV000668405
RCV000673566
RCV000669100
RCV000672157
RCV000672964
RCV000672078
RCV000671638
RCV000674067
RCV000667746
RCV000664503
RCV000669321
RCV000674933
RCV000665310
RCV000670372
RCV000674997
RCV000671439
RCV000674810
RCV000672361
RCV000664669
RCV000782135
RCV001004149
RCV001004150
RCV001004151
RCV001004152
RCV001004154
RCV001004155
RCV001004156
RCV001059924
RCV001052682
RCV001064646
RCV001065545
RCV001378413
RCV001212480
RCV001257404
RCV001283805
Unknown Diseases with uncertain, conflicting, or no pathogenic evidence in ClinVar
Phenotype Name Clinical Significance dbSNP ID RCV Accession
Cervical cancer Likely benign rs74365027 RCV005891715
Gastric cancer Likely benign rs74365027 RCV005891716
Methylmalonic aciduria, type cblc Conflicting classifications of pathogenicity rs200483477 RCV003458351
Uterine corpus endometrial carcinoma Likely benign rs74365027 RCV005891717
Associations from Text MiningDisease 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