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.
[EN] CHARACTERISING POLYPEPTIDES<br/>[FR] CARACTERISATION DE POLYPEPTIDES
申请人:XZILLION GMBH & CO KG
公开号:WO2002099124A2
公开(公告)日:2002-12-12
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.
A Highly Selective Synthesis of Dialkenyl Sulfones via Cross-Metathesis of Divinyl Sulfone
作者:Michal Bieniek、Dariusz Kołoda、Karol Grela
DOI:10.1021/ol061991+
日期:2006.12.1
Catalytic cross-metathesis of commercial divinyl sulfone allowed direct access to novel (E)-alkenylvinyl sulfones and (E,E)-dialkenyl sulfones with excellent stereoselectivity. These compounds are useful building blocks, e.g., in the synthesis of substituted thiomorpholine 1,1-dioxidederivatives. [reaction: see text]