作者:Michinori Oki、Waro Nakanishi、Michio Fukunaga、G. David Smith、William L. Duax、Yoshio Osawa
DOI:10.1246/cl.1975.1277
日期:1975.12.5
2,2-Dimethyl-1-phenylthiiranium hexachloroantimonate was prepared in sulfur dioxide. The direction of ring-opening of the thiiranium ion was found to differ according to the reaction conditions. The structures of the products were determined by independent synthesis and by X-ray crystallography.
在二氧化硫中制备 2,2-二甲基-1-苯基硫鎓六氯锑酸盐。发现硫鎓离子的开环方向根据反应条件而不同。产品的结构是通过独立合成和 X 射线晶体学确定的。
Characterising polypeptides
申请人:Hamon Christian
公开号:US20050042676A1
公开(公告)日:2005-02-24
Provided is a method for characterising a polypeptide or a population of polypeptides, which method comprises the steps of: (a) contacting a sample comprising one or more polypeptides with a lysine reactive agent to cap ε-amino groups; (b) optionally reacting the sample of polypeptides with an amine reactive reagent to block α-amino groups; (c) digesting the sample of polypeptides with a cleavage reagent to produce peptide fragments; (d) optionally deactivating the cleavage reagent; (e) removing those peptides having uncapped or unblocked amino groups; and (f) recovering the N-terminal peptides.
Provided is a method for characterising a polypeptide or a population of polypeptides, which method comprises the steps of:
(a) contacting a sample comprising one or more polypeptides with a lysine reactive agent to cap ε-amino groups;
(b) optionally reacting the sample of polypeptides with an amine reactive reagent to block α-amino groups;
(c) digesting the sample of polypeptides with a sequence specific cleavage reagent to produce peptide fragments;
(d) optionally deactivating the cleavage reagent;
(e) removing those peptides having uncapped or unblocked amino groups; and
(f) recovering the N-terminal peptides.