吡咯-咪唑 (PI) 聚酰胺以序列特异性方式与 DNA 的小沟结合,不会导致 DNA 变性。为了具体可视化端粒,已经合成了与荧光染料共轭的串联发夹 PI 聚酰胺,但由于合成这些串联发夹 PI 聚酰胺存在困难,因此尚未报道使用这些 PI 聚酰胺对端粒进行研究。为了更轻松地合成串联发夹 PI 聚酰胺,我们开发了新的 PI 聚酰胺片段,并将它们用作 Fmoc 固相肽合成单元。使用这种新方法,我们合成了四种用于人类端粒重复 TTAGGG 的荧光聚酰胺探针,我们检查了串联发夹 PI 聚酰胺的结合亲和力和特异性,荧光聚酰胺探针的紫外-可见吸收和荧光光谱,小鼠 MC12 和人类 HeLa 细胞中的端粒染色。使用新方法合成的聚酰胺在温和条件下成功靶向人和小鼠端粒,并在保持端粒结构的同时更容易标记细胞中的端粒。使用荧光聚酰胺,我们证明了单个端粒水平的端粒长度与 TRF1 蛋白的丰度有关,TRF1 蛋白是端粒中的一种保护蛋白复合物成分。
“CLipP”ing on lipids to generate antibacterial lipopeptides
作者:Victor Yim、Iman Kavianinia、Melanie K. Knottenbelt、Scott A. Ferguson、Gregory M. Cook、Simon Swift、Aparajita Chakraborty、Jane R. Allison、Alan J. Cameron、Paul W. R. Harris、Margaret A. Brimble
DOI:10.1039/d0sc01814g
日期:——
We herein report the synthesis and biological and computational evaluation of 12 linear analogues of the cyclic lipopeptide battacin, enabled by Cysteine Lipidation on a Peptide or Amino Acid (CLipPA) technology.
我们在此报告了通过Cysteine Lipidation on a Peptide or Amino Acid (CLipPA)技术合成的环脂肽battacin的12个线性类似物的生物和计算评价结果。
[EN] BETA-HAIRPIN PEPTIDOMIMETICS<br/>[FR] PEPTIDOMIMÉTIQUES EN ÉPINGLE À CHEVEUX BÊTA
申请人:POLYPHOR AG
公开号:WO2016050361A1
公开(公告)日:2016-04-07
Beta-hairpin peptidomimetics of the general formula (I), cyclo[P1-P2-P3-P4-P5-P6- P7-P8-P9-P10-P11-P12-T1-T2] a nd pharmaceutically acceptable salts thereof, with P1 to P12, T1 and T2 being elements as defined in the description and the claims, have Gramnegative antimicrobial activity to e.g. inhibit the growth or to kill microorganisms such as Klebsiellapneumoniae and/or Acinetobacter baumannii and/or Escherichia coli. They can be used as medicaments to treat or prevent infections or as disinfectants for foodstuffs, cosmetics, medicaments or other nutrient-containing materials. These peptidomimetics can be manufactured by a process which is based on a mixed solid- and solution phase synthetic strategy.
Synthesis and antibacterial studies of binaphthyl-based tripeptoids. Part 1
作者:John B. Bremner、Paul A. Keller、Stephen G. Pyne、Timothy P. Boyle、Zinka Brkic、Dorothy M. David、Mark Robertson、Kittiya Somphol、Dean Baylis、Jonathan A. Coates、John Deadman、Darshini Jeevarajah、David I. Rhodes
DOI:10.1016/j.bmc.2010.02.033
日期:2010.4
An efficient synthesis of 29 new binaphthyl-based neutral, and mono- and di-cationic, peptoids is described. Some of these compounds had antibacterial activities with MIC values of 1.9–3.9 μg/mL against Staphylococcus aureus. One peptoid had a MIC value of 6 μg/mL against a methicillin-resistant strain of S. aureus (MRSA) and a MIC value of 2 μg/mL against vancomycin-resistant strains of enterococci
描述了29种新的基于双萘基的中性,单和双阳离子类肽的有效合成。其中一些化合物对金黄色葡萄球菌具有抗菌活性,MIC值为1.9–3.9μg/ mL 。一种类肽对耐金霉素的金黄色葡萄球菌(MRSA)的MIC值为6μg/ mL,对耐万古霉素的肠球菌(VRE)的MIC值为2μg/ mL。
Alternative Heterocycles for DNA Recognition: The Benzimidazole/Imidazole Pair
作者:Christoph A. Briehn、Philipp Weyermann、Peter B. Dervan
DOI:10.1002/chem.200204689
日期:2003.5.9
acids were synthesized and incorporated into DNA binding polyamides, comprised of N-methyl pyrrole and N-methyl imidazole amino acids, by means of solid-phase synthesis on an oxime resin. These hairpin polyamides were designed to determine the DNArecognition profile of a side-by-side benzimidazole/imidazolepair for the designated six base pairrecognition sequence. Equilibrium association constants
Programmable Oligomers for Minor Groove DNA Recognition
作者:Raymond M. Doss、Michael A. Marques、Shane Foister、David M. Chenoweth、Peter B. Dervan
DOI:10.1021/ja0621795
日期:2006.7.19
The four Watson-Crick base pairs of DNA can be distinguished in the minor groove by pairing side-by-side three five-membered aromatic carboxamides, imidazole (Im), pyrrole (Py), and hydroxypyrrole (Hp), four different ways. On the basis of the paradigm of unsymmetrical paired edges of aromatic rings for minor groove recognition, a second generation set of heterocyclepairs, imidazopyridine/pyrrole (Ip/Py)
DNA 的四个 Watson-Crick 碱基对可以通过并排配对三个五元芳香羧酰胺、咪唑 (Im)、吡咯 (Py) 和羟基吡咯 (Hp),四种不同的方式在小沟中区分。基于用于小沟识别的芳环不对称配对边缘的范式,第二代杂环对,咪唑并吡啶/吡咯(Ip/Py)和羟基苯并咪唑/吡咯(Hz/Py),揭示了识别元件不是基于可以实现对远霉素类似物的研究。一组新的末端杂环二聚体,恶唑-羟基苯并咪唑 (No-Hz) 和氯噻吩-羟基苯并咪唑 (Ct-Hz),与 Py-Py 配对显示结合小沟中 DNA 的连续碱基对,特别是 5' -GT-3' 和 5'-TT-3',具有高亲和力和选择性。