Active-site engineering of nucleotidylyltransferases and general enzymatic methods for the synthesis of natural and “unnatural” UDP- and TDP-nucleotide sugars
申请人:Sloan-Kettering Institute for Cancer Research
公开号:US07122359B2
公开(公告)日:2006-10-17
The present invention provides mutant nucleotidylyl-transferases, such as Ep, having altered substrate specificity; methods for their production; and methods of producing nucleotide sugars, which utilize these nucleotidylyl-transferases. The present invention also provides methods of synthesizing desired nucleotide sugars using natural and/or modified Ep or other nucleotidyltransferases; and nucleotide sugars sythesized by the present methods. The present invention further provides new glycosyl phosphates, and methods for making them.
本发明提供了突变核苷酸转移酶,例如Ep,其底物特异性发生改变;其生产方法;以及利用这些核苷酸转移酶生产核苷酸糖的方法。本发明还提供了利用天然和/或改性的Ep或其他核苷酸转移酶合成所需核苷酸糖的方法;以及由本方法合成的核苷酸糖。本发明还提供了新的糖基磷酸盐,以及制备它们的方法。