The present invention relates to a method for preparing (Z)-6,7-dihydro-1H-azepin-2(5H)-one comprising removing the α-amino group of α-amino-ε-caprolactam, wherein the removal is catalysed by a biocatalyst. The invention further relates to a method for preparing caprolactam from (Z)-6,7-dihydro-1H-azepin-2(5H)-one. The invention further relates to a host cell comprising at least one recombinant vector comprising a nucleic acid sequence encoding a biocatalyst with L-α-amino-ε-caprolactam ammonia lyase activity.
本发明涉及一种制备(Z)-6,7-二氢-1H-氮杂卓-2(5H)-酮的方法,该方法包括去除α-
氨基-ε-己内酰胺的α-
氨基基团,其中该去除由
生物催化剂催化。本发明还涉及一种从(Z)-6,7-二氢-1H-氮杂卓-2(5H)-酮制备己内酰胺的方法。本发明还涉及一种宿主细胞,该宿主细胞包含至少一个
重组载体,该
重组载体包含编码具有 L-α-
氨基-ε-己内酰胺
氨裂解酶活性的
生物催化剂的核酸序列。