5-amino-5-carboxypentanoyl) into isopenicillin N by the enzyme isopenicillin N synthetase has been shown to proceed with complete retention of stereochemistry; a similar result was observed during penicillin formation with isoleucinyl and allo-isoleucinyl tripeptides.
三肽(L -α-
氨基-δ-己二酰基)-
L-半胱氨酸-
D-缬氨酸(α-
氨基-δ-己二酰基= 5-
氨基-5-羧基戊酰基)通过异
青霉素N合成酶转化为异
青霉素N已证明可以完全保留立体
化学;期间
青霉素地层与异亮并且观察到了类似的结果同种异体-isoleucinyl三肽。