Each day Apimba highlights one enzyme from our curated database of biochemical catalysts. The selection is deterministic for the day, so everyone sees the same enzyme until midnight UTC.
EC Number: 4.3.1.20
Reaction: erythro-3-hydroxy-L-aspartate = oxaloacetate + NH3
Systematic name: erythro-3-hydroxy-L-aspartate ammonia-lyase (oxaloacetate-forming)
Other names: erythro-beta-hydroxyaspartate dehydratase; erythro-3-hydroxyaspartate dehydratase; erythro-3-hydroxy-Ls-aspartate hydro-lyase (deaminating); erythro-3-hydroxy-Ls-aspartate ammonia-lyase
Comments: A pyridoxal-phosphate protein. The enzyme, which was characterized from the bacterium Paracoccus denitrificans NCIMB 8944, is highly specific for the L-isomer of erythro-3-hydroxyaspartate. Different from EC 4.3.1.16, threo-3-hydroxy-L-aspartate ammonia-lyase and EC 4.3.1.27, threo-3-hydroxy-D-aspartate ammonia-lyase. Requires a divalent cation such as Mn2+, Mg2+, and Ca2+.
CAS Number: 37290-74-7