A C-terminus amidation enzyme composition of serum or blood plasma origin, which acts on a C-terminus glycine adduct represented by formula (I) (wherein A represents a residue other than α-amino or imino group and α-carboxyl group of a natural α-amino acid origin, and X represents a hydrogen atom or a residue of an amino acid derivative bound to the N atom via a carbonyl group) to produce a C-terminus amidation product represented by formula (II) (wherein A and X are as defined above) and glyoxylic acid, is disclosed. A process for preparing the composition and its use are also disclosed.
一种来源于血清或血浆的 C-端酰胺化酶组合物,它作用于式(I)代表的 C-端甘
氨酸加合物(其中 A 代表除天然
α-氨基酸来源的 α-
氨基或
亚胺基和 α-羧基以外的残基),X 代表氢原子或通过羰基与 N 原子结合的
氨基酸衍
生物残基、和 X 代表氢原子或通过羰基与 N 原子结合的
氨基酸衍
生物残基),以产生由式 (II) 代表的 C 端酰胺化产物(其中 A 和 X 如上定义)和
乙醛酸。还公开了制备该组合物的工艺及其用途。