post-translation modification是什么意思

　　post-translation modification的意思是翻译后修饰。
　　post-translation modification的用法：
　　1.his system has many advantages， such as high yield regulated by
　　polyhedrinpromoter， proper posttranslation modification， ease of purification
　　from serum-freeculture supernatant， and lake of endotoxin contamination in
　　these systems， butthere are some shortcoming needing to improve.
　　该系统具有如多角体启动子控制下的GX表达，比较完善的转译后加工修饰，容易从无血清培养上清中纯化，无内毒素污染等特点。
　　2.The precursor peptide of lantibiotics needs to undergo complicated post-translationmodification， transportation， and removal of the N-terminal
　　leader sequence then togenerate bioactive antibiotics， its unique active forms has also been a focus thatdraws people's attention.
　　羊毛硫抗生素前体肽需经过复杂的翻译后修饰、转运、引导肽切除等加工后才能形成具有活性的抗生素，其独特的作用方式，也是人们一直关注的焦点。