作者:Renliang Yang、Kalyan Kumar Pasunooti、Fupeng Li、Xue-Wei Liu、Chuan-Fa Liu
DOI:10.1021/ja905491p
日期:2009.9.30
A thiol group introduced on the gamma-carbon of lysine mediates robust native chemical Ligation at both the alpha- and epsilon-amines in two consecutive steps. Desulfurization then affords the final product, in which the lysine residue at the ligation site has an isopeptide bond on its side chain. The method is useful for the synthesis of proteins containing special post-translational modifications on lysine.