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3SC0

Crystal Structure of MMACHC (1-238), a human B12 processing enzyme, complexed with MethylCobalamin

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
Methylmalonic aciduria and homocystinuria type C proteinpolymer24127489.51UniProt (Q9Y4U1)
Pfam (PF16690)
Homo sapiens (human)
2B
(A)
CO-METHYLCOBALAMINnon-polymer1344.41Chemie (COB)
3C
(A)
waterwater18.0179Chemie (HOH)
Sequence modifications
A: 1 - 238 (UniProt: Q9Y4U1)
PDBExternal DatabaseDetails
Ser -2-expression tag
Asn -1-expression tag
Ala 0-expression tag
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains1
Total formula weight27489.5
Non-Polymers*Number of molecules1
Total formula weight1344.4
All*Total formula weight28833.9
*Water molecules are not included.

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PDB entries from 2025-10-22

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