IUBMB Enzyme Nomenclature


Accepted name: methylaspartate ammonia-lyase

Reaction: L-threo-3-methylaspartate = mesaconate + NH3

Other name(s): β-methylaspartase; 3-methylaspartase; L-threo-3-methylaspartate ammonia-lyase

Systematic name: L-threo-3-methylaspartate ammonia-lyase (mesaconate-forming)

Comments: A cobalamin protein.

Links to other databases: BRENDA, EXPASY, GTD, KEGG, Metacyc, PDB, CAS registry number: 9033-26-5


1. Barker, H.A., Smyth, R.O., Wawszkiewicz, E.J., Lee, M.N. and Wilson, R.M. Enzymic preparation and characterization of an α-L-β-methylaspartic acid. Arch. Biochem. Biophys. 78 (1958) 468-476. [PMID: 13618029]

2. Bright, H.J. and Ingraham, L.L. The preparation of crystalline β-methylaspartase. Biochim. Biophys. Acta 44 (1960) 586-588.

[EC created 1961]

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