Q9Y4U1 (MMAC_HUMAN) Homo sapiens (Human)

Cyanocobalamin reductase / alkylcobalamin dealkylase UniProtKBInterProSTRINGInteractive Modelling

282 aa; Sequence (Fasta)

Sequence Features

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 27Q -> R (in MAHCC; dbSNP:rs546099787) VAR_024770 dbSNP
 116L -> P (in MAHCC; dbSNP:rs121918240) VAR_024771 dbSNP
 122H -> R (in MAHCC) VAR_024772
 130Y -> H (in MAHCC; dbSNP:rs372670428) VAR_024773 dbSNP
 147G -> A (in MAHCC; dbSNP:rs140522266) VAR_024774 dbSNP
 147G -> D (in MAHCC; loss of cyanocobalamin binding; dbSNP:rs140522266) VAR_024775 dbSNP
 156G -> D (in MAHCC; dbSNP:rs1553162910) VAR_024776 dbSNP
 157W -> C (in MAHCC; dbSNP:rs1002571805) VAR_024777 dbSNP
 161R -> G (in MAHCC; results in decreased stability and decreased methylcobalamin dealkylation activity; dbSNP:rs370596113) VAR_024778 dbSNP
 161R -> Q (in MAHCC; results in decreased stability and reduced stabilization induced by cobalamin binding; has reduced affinity for cyanocobalamin and reduced activity in dealkylation of methylcobalamin; dbSNP:rs121918243) VAR_024779 dbSNP
 189R -> S (in MAHCC; dbSNP:rs200895671) VAR_024780 dbSNP
 193L -> P (in MAHCC; dbSNP:rs1233135084) VAR_024781 dbSNP
 206R -> P (in MAHCC; dbSNP:rs371753672) VAR_024782 dbSNP
 206R -> W (in MAHCC; dbSNP:rs538023671) VAR_024783 dbSNP
 271S -> G (in dbSNP:rs35219601) VAR_038805 dbSNP
 20-234Methylmalonic aciduria and homocystinuria type C family
IPR032037PF16690

Sequence Alignments

Experimental structures

DescriptionOligo-stateLigandsStructureRange
Crystal Structure of MMACHC (1-238), a human B12 processing enzyme, complexed with MethylCobalaminmonomer COB;3sc02-238
Assess
Crystal Structure of CblC (MMACHC) (1-238), a human B12 processing enzyme, complexed with an Antiviā€¦monomer B12;8FS;GSH;171;SO4;NA;5uos1-236
Assess
Crystal Structure of Apo-MMACHC (1-244), a human B12 processing enzymemonomer MLI;GOL;3sbz2-235
Assess
Crystal Structure of SeMet-Substituted Apo-MMACHC (1-244), a human B12 processing enzymemonomer 3sby1-229
Assess
crystal structure of human MMACHCmonomer B12;FLC;DHL;5AD;3som4-230
Assess