Synthesis of (S)- and (R)-enantiomers of p-(4-hydroxybenzoyl)phenylalanine, useful photoaffinity labeling probes for peptide–protein binding sites
摘要:
A high yield, multigram synthesis of both enantiomers of p-(4-hydroxybenzoyl)phenylalanine, cross-linking probes for peptide-protein binding interactions, is reported. The synthesis was accomplished using Schollkopf chiral auxiliary reagents. (C) 1998 Elsevier Science Ltd. All rights reserved.
Abstract Methodology has been developed for the synthesis of C4‐carba‐bridged cystine analogues with a 1,3‐disubstituted phenyl group inserted into the chain. Stereoselective bromobenzylation of the Schöllkopf chiron and a subsequent bromine‐lithium exchange provided a lithiated species for conversion to a higher order cyanocuprate. The latter was cross‐coupled with an α‐bromoacylaminoacetate. Subsequent
Synthesis and Spectroscopic Characterization of Photo-affinity Peptide Ligands to Study RhodopsinG Protein Interaction<sup />
作者:Yihui Chen、Rolf Herrmann、Nathan Fishkin、Peter Henklein、Koji Nakanishi、Oliver P. Ernst
DOI:10.1111/j.1751-1097.2008.00304.x
日期:2008.7
peptides containing photo‐reactive groups with a specific isotope pattern, which can facilitate detection of cross‐linked products by mass spectrometry. In a preliminary set of experiments, we characterized such peptides derived from the farnesylated Gtγ C‐terminus (Gtγ(60‐71)far) in terms of their capability to bind R*. Here, we describe novel peptides with photo‐affinity labels that bind R* with affinities
G 蛋白偶联受体 (GPCR) 参与控制我们行为和生理学的几乎所有方面。激活的受体催化细胞膜内表面异源三聚体 G 蛋白(由 α·GDP、β 和 γ 亚基组成)中的核苷酸交换。GPCR 视紫质和 G 蛋白转导蛋白 (Gt) 是视觉级联早期步骤中的关键蛋白质。Gt 上的主要受体相互作用位点是 Gtα 亚基的 C 端尾部和 Gtγ 亚基的法呢基化 C 端尾部。源自这些 C 末端的合成肽特异性结合并稳定活性视紫质构象 (R*)。在这里,我们报告了含有具有特定同位素模式的光反应基团的 R* 相互作用肽的合成,这可以促进通过质谱法检测交联产物。在一组初步的实验中,我们根据结合 R* 的能力对源自法呢基化 Gtγ C 端 (Gtγ(60-71)far) 的此类肽进行了表征。在这里,我们描述了具有光亲和标记的新型肽,这些肽以类似于天然 Gtγ(60-71)far 肽的亲和力结合 R*。这样的肽将能够改进实验策略来探测视紫质-Gt
A Photo-Cross-Linking Strategy to Map Sites of Protein-Protein Interactions
作者:Yihui Chen、Yalin Wu、Peter Henklein、Xiaoxu Li、Klaus Peter Hofmann、Koji Nakanishi、Oliver P. Ernst
DOI:10.1002/chem.201000441
日期:2010.7.5
figure)/G‐protein model system, a specific protein–peptide interaction was analyzed by using a G‐protein‐derived peptide containing p‐ethynylbenzoyl‐modified phenylalanine. Click chemistry with a biotin propyl azide probe enabled isolation of photo‐cross‐linked products and facilitated mass spectrometric analysis of the protein–peptide interactionsites.
Synthesis of (S)- and (R)-enantiomers of p-(4-hydroxybenzoyl)phenylalanine, useful photoaffinity labeling probes for peptide–protein binding sites
作者:Abdul H Fauq、Chewki Ziani-Cherif、Elliott Richelson
DOI:10.1016/s0957-4166(98)00229-8
日期:1998.7
A high yield, multigram synthesis of both enantiomers of p-(4-hydroxybenzoyl)phenylalanine, cross-linking probes for peptide-protein binding interactions, is reported. The synthesis was accomplished using Schollkopf chiral auxiliary reagents. (C) 1998 Elsevier Science Ltd. All rights reserved.