骨架修饰是一种常用的化学工具,用于控制线性肽的构象,并探索对其生化和生物物理特性的潜在有用影响。硫代酰胺 psi[CS-NH] 基团是酰胺(肽)功能的近等排结构模拟物。在本文中,我们描述了三种精心挑选的脂肽生物 [Leu(11)-OMe] 毛虫素 GA IV 的肽类似物的溶液合成、化学表征、优选构象以及膜和生物活性。在每个类似物中,加入了一个单一的硫代酰胺置换。研究了靠近 N 端、中心和靠近 C 端的序列位置。
Bispidine as a helix inducing scaffold: examples of helically folded linear peptides
作者:V. Haridas、Sandhya Sadanandan、M. V. S. Gopalakrishna、M. B. Bijesh、Ram. P. Verma、Srinivas Chinthalapalli、Ashutosh Shandilya
DOI:10.1039/c3cc45649h
日期:——
We designed and synthesized bispidine-anchored peptides and showed that these peptides as small as B3 (containing four chiral α-amino acid residues) adopt a right handed helical conformation. Bispidine anchored linear peptide B3 adopts a helical conformation in solution and in the solid state.
New membrane-modifying peptides, trichorozins I-IV, have been isolated from conidia of the fungus Trichodermaharzianum. Their amino acid sequences were clearly determined by spectrometric methods and, furthermore, they were synthesized by the solution-phase method. Trichorozins are a family of the class of peptaibols and are composed of 11 residues including an amino alcohol. Trichorozins exhibited
Probing the folding induction ability of orthanilic acid in peptides: some observations
作者:Arup Roy、Amol S. Kotmale、Rupesh L. Gawade、Vedavati G. Puranik、P. R. Rajamohanan、Gangadhar J. Sanjayan
DOI:10.1039/c3ra47039c
日期:——
This paper describes the ability of orthanilic acid (2-aminobenzenesulfonic acid, SAnt) to promote folding when introduced in a peptide sequence. Three peptide sequences, containing orthanilic acid (SAnt) with a sulfonamide moiety in the turn segment, have been synthesized in the solution phase using suitable coupling agents, and their structural aspects investigated using NMR and X-ray crystallographic studies. Solid- and solution-state conformational analyses reveal that the peptide sequences containing orthanilic acid in their backbone exist in a folded conformation featuring long-range 15-membered ring H-bonding.
本文介绍了在肽序列中引入正苯胺酸(2-氨基苯磺酸,SAnt)促进折叠的能力。我们使用合适的偶联剂在溶液相中合成了三个肽序列,其中含有在转折段含有磺酰胺分子的原苯胺酸(SAnt),并使用核磁共振和 X 射线晶体学研究对它们的结构进行了研究。固态和溶液态构象分析表明,骨架中含有正苯胺酸的肽序列以折叠构象存在,具有长程 15 元环 H 键。
Dutta, Anand S; Cormley, James J; McLachlan, Peter F, Journal of Chemical Research, Miniprint, 1990, # 1, p. 101 - 170
作者:Dutta, Anand S、Cormley, James J、McLachlan, Peter F、Major, John S
DOI:——
日期:——
Hybrid αγ Polypeptides: Structural Characterization of a C<sub>12</sub>/C<sub>10</sub>Helix with Alternating Hydrogen-Bond Polarity
作者:Prema G. Vasudev、Sunanda Chatterjee、Kuppanna Ananda、Narayanaswamy Shamala、Padmanabhan Balaram