MMACHC
Gene Information
- Official Symbol: MMACHC
- Official Name: metabolism of cobalamin associated C
- Aliases and Previous Symbols: N/A
- Entrez ID: 25974
- UniProt: Q9Y4U1
- Interactions: BioGRID
- PubMed articles: Open PubMed
- OMIM: Open OMIM
Function Summary
- Entrez 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 may have a role in the binding and intracellular trafficking of cobalamin. Mutations in this gene are associated with methylmalonic aciduria and homocystinuria type cblC. [provided by RefSeq, Oct 2009].
- UniProt Summary: Catalyzes the reductive dealkylation of cyanocobalamin to cob(II)alamin, using FAD or FMN as cofactor and NADPH as cosubstrate (PubMed:19700356, PubMed:21697092, PubMed:22642810). Can also catalyze the glutathione-dependent reductive demethylation of methylcobalamin, and, with much lower efficiency, the glutathione-dependent reductive demethylation of adenosylcobalamin (PubMed:19801555, PubMed:22642810, PubMed:25809485). Under anaerobic conditions cob(I)alamin is the first product; it is highly reactive and is converted to aquocob(II)alamin in the presence of oxygen (PubMed:19801555). Binds cyanocobalamin, adenosylcobalamin, methylcobalamin and other, related vitamin B12 derivatives (PubMed:21071249). {ECO:0000269|PubMed:19700356, ECO:0000269|PubMed:19801555, ECO:0000269|PubMed:21071249, ECO:0000269|PubMed:21697092, ECO:0000269|PubMed:22642810, ECO:0000269|PubMed:25809485}.
CRISPR Data
Essentiality in NALM6
- Essentiality Rank: 10277
- Expression level (log2 read counts): 6.36
MMACHC Expression in NALM6 Cells: 6.36
