isoxazolylalanine isomers, beta-(isoxazolin-5-on-2-yl)-L-alanine (BIA, 1) and beta-(isoxazolin-5-on-4-yl)-L- alanine (TAN-950A, 2) were confirmed to be derived from O-acetyl-L-serine (OAS) and isoxazolin-5-one by cysteine synthases (CSases) with a different ratio in different plant parts. Some properties of this enzyme in the biosynthesis of both isomers are described.
两种
异恶唑基丙
氨酸异构体,β-(
异恶唑啉-5-基-2-基)-
L-丙氨酸(BIA,1)和β-(
异恶唑啉-5-基-2-基)-
L-丙氨酸(TAN-950A,2 )通过半胱
氨酸合酶(CSases)在不同植物部分中以不同的比例被证实衍生自O-乙酰基-
L-丝氨酸(OAS)和
异恶唑啉-5-一。描述了该酶在两种异构体的
生物合成中的一些特性。