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EC 2.5.1.119 Details
EC number
2.5.1.119
Accepted name
β-(isoxazolin-5-on-4-yl)-L-alanine synthase
Reaction
O-acetyl-L-serine + isoxazolin-5-one = 3-(5-oxoisoxazolin-4-yl)-L-alanine + acetate
Systematic name
O-acetyl-L-serine:isoxazolin-5-one 4-(2-amino-2-carboxyethyl)transferase
Comment
3-(5-Oxoisoxazolin-4-yl)-L-alanine is an antifungal antibiotic produced by the bacterium Streptomyces platensis. The enzymes from the plants Lathyrus odoratus (sweet pea), L. sativus (grass pea) and Citrullus vulgaris (watermelon) that catalyse EC 2.5.1.118 (β-(isoxazolin-5-on-2-yl)-L-alanine synthase) also catalyse this reaction in vitro, but not in vivo. Closely related and possibly identical to EC 2.5.1.47, cysteine synthase, and EC 2.5.1.51, β-pyrazolylalanine synthase.
History
created 2014
EC Tree
2.5.1.12 created 1972, deleted 1976
2.5.1.13 created 1972, deleted 1976
2.5.1.14 created 1972, deleted 1976
2.5.1.37 created 1989, deleted 2004
2.5.1.40 created 1992, deleted 1999