Method of thioacylation peptide sequencing with acylation of
thiazoloinones
    9.
    发明授权
    Method of thioacylation peptide sequencing with acylation of thiazoloinones 失效
    用三唑啉酮酰化的硫代酰化肽测序方法

    公开(公告)号:US4861726A

    公开(公告)日:1989-08-29

    申请号:US166420

    申请日:1988-03-10

    IPC分类号: C07K1/12 G01N33/68

    摘要: A protein micro sequencing method for use in conjunction with the thiocylation degradation of polypeptides and proteins is disclosed. The process involves reaction of the N-terminal amino acid of a polypeptide with an excess of a thioacylating reagent. After sufficient time to insure quantitative coupling and removal of excess reagent, the derivatized polypeptide is subjected to cleavage by acid which affords a 2-substituted-5(4H)-thiazolinone. After removal of excess acid, the thiazolinone is reacted with a small excess of a fluorescent or enhanced ultraviolet absorbance reagent having a reactive carboxylic acid chloride, sulfonic acid chloride, chloroformate, isocyanate or anhydride functionality, in the presence of a tertiary amine catalyst, to yield the corresponding 5-O-acyl-2-(substituted)thiazole derivative, detectible by enhanced ultravoilet absorobance or fluorescence emission at extremely low concentration thereby providing a method of sequencing very small amounts of protein.

    摘要翻译: 公开了与多肽和蛋白质的硫代酰化降解结合使用的蛋白质微测序方法。 该方法涉及多肽的N-末端氨基酸与过量的硫代酰化试剂的反应。 在足够的时间确保定量偶联和除去过量试剂后,将衍生的多肽经酸提供2-取代的-5(4H) - 噻唑啉酮。 除去过量的酸后,噻唑啉酮与少量过量的在叔胺催化剂存在下具有反应性羧酸氯化物,磺酰氯,氯甲酸酯,异氰酸酯或酸酐官能团的荧光或增强的紫外线吸收剂反应,与 产生相应的5-O-酰基-2-(取代的)噻唑衍生物,通过增强的超疏水吸收或极低浓度的荧光发射可检测,从而提供了非常少量蛋白质的测序方法。