Dienyl cations of the type [(η5-R·C6H6)Fe(CO)3]+1 are shown to be versatile electrophilic reagents for the rapid and selective labelling of peptides and proteins, with the affinity for amino acid residues decreasing markedly in the order: cys (SH) > his (–N) > glu (δ-CO2–)≫α-NH2, lys (ε-NH2), ser (γ-OH), asn (-CONH)
研究表明,[(η5-R-
C6H6)Fe(CO)3]+1 型
二烯丙基阳离子是一种多功能亲电试剂,可快速、选择性地标记肽和蛋白质,其对
氨基酸残基的亲和力按以下顺序明显降低:cys (SH) > his (-N) > glu (δ-
CO2-)≫α-NH2, lys (δµ-NH2), ser (γ-OH), asn (-CONH)