Stereospecific Synthesis of a Carbene-Generating Angiotensin II Analogue for Comparative Photoaffinity Labeling: Improved Incorporation and Absence of Methionine Selectivity
作者:Dany Fillion、Maud Deraët、Brian J. Holleran、Emanuel Escher
DOI:10.1021/jm050958a
日期:2006.4.1
A stereospecific convergent synthesis of N-[(9-fluorenyl)methoxycarbonyl]-p-[3-(trifluoromethyl)-3H-diazirin-3-yl]-l-pheny lalanine (Fmoc-12, Fmoc-Tdf) and its incorporation into the C-terminal position of the angiotensin II (AngII) peptide to form (125)I[Sar(1),Tdf(8)]AngII ((125)I-13) is presented. This amino acid photoprobe is a highly reactive carbene-generating diazirine phenylalanine derivative
N-[(9-芴基)甲氧基羰基]-对-[3-(三氟甲基)-3H-二氮杂-3-基] -1-苯丙氨酸(Fmoc-12,Fmoc-Tdf)的立体定向聚合合成及其掺入血管紧张素II(AngII)肽的C末端位置形成(125)I [Sar(1),Tdf(8)] AngII((125)I-13)。该氨基酸光电探针是可用于光亲和标记的高反应性卡宾生成重氮基苯丙氨酸衍生物。使用模型受体,我们将12的反应性和Met选择性与广泛使用的Met选择性对苯甲酰基-1-苯丙氨酸(Bpa)光电探针进行了比较。用(125)I-13和(125)I [Sar(1),Bpa(8)] AngII((125) I-14),并评估各自的掺入量。