Selective Substrates and Activity-Based Probes for Imaging of the Human Constitutive 20S Proteasome in Cells and Blood Samples
作者:Wioletta Rut、Marcin Poręba、Paulina Kasperkiewicz、Scott J. Snipas、Marcin Drąg
DOI:10.1021/acs.jmedchem.8b00026
日期:2018.6.28
the HyCoSuL approach, we designed and synthesized novel and selective fluorogenic substrates for each of these three constitutive 20S proteasome activities and applied them to assess inhibition of proteasome subunits by MG-132 and a clinically used inhibitor bortezomib. Our results confirm the utility of designed substrates in biochemical assays. Furthermore, selective peptide sequences obtained in this
Selection of DNA‐Encoded Dynamic Chemical Libraries for Direct Inhibitor Discovery
作者:Yuqing Deng、Jianzhao Peng、Feng Xiong、Yinan Song、Yu Zhou、Jianfu Zhang、Fong Sang Lam、Chao Xie、Wenyin Shen、Yiran Huang、Ling Meng、Xiaoyu Li
DOI:10.1002/anie.202005070
日期:2020.8.24
that can identify full ligand structures from large‐scale DEDLs. This method is also able to convert unbiased libraries into focused ones targeting specific protein classes. We demonstrated this method by selecting DEDLs against five proteins, and novel inhibitors were identified for all targets. Notably, several selective BD1/BD2 inhibitors were identified from the selections against bromodomain 4 (BRD4)
Design and Synthesis of a Biologically Active Antibody Mimic Based on an Antibody-Antigen Crystal Structure
作者:M. L. Smythe、M. von Itzstein
DOI:10.1021/ja00086a005
日期:1994.4
(antigen)-NC41 (antibody) complex to design a low molecular weight compound that mimics the binding function of the macromolecular antibody. The components of recognition between the antibody and the protein antigen have been analyzed from the energy-refined crystal complex. From this analysis, four amino acid residues on the antibody binding surface, which make direct contact with the active-site loop 368-370
Distance Dependence of Photoinduced Electron Transfer along α-Helical Polypeptides
作者:Masahiko Sisido、Satoshi Hoshino、Hajime Kusano、Masahiro Kuragaki、Maki Makino、Hiroshi Sasaki、Trevor A. Smith、Kenneth P. Ghiggino
DOI:10.1021/jp011180h
日期:2001.10.1
with increasing the number of spacer amino acids from 1 to 2 and from 5 to 6 were found. The ET rate constants, however, exhibited a simple exponential dependence on the edge-to-edge distance between the two chromophores, with a distance decay factor β = 0.66 ± 0.1 (A-1). The ET data on the α-helical polypeptides were analyzed on the basis of the tunneling pathway model. The optimum ET pathways from the
Prodrugs to enhance central nervous system effects of the TRH-like peptide pGlu-Glu-Pro-NH2
作者:Katalin Prokai-Tatrai、Vien Nguyen、Alevtina D. Zharikova、April C. Braddy、Stanley M. Stevens、Laszlo Prokai
DOI:10.1016/s0960-894x(03)00081-7
日期:2003.3
Potential prodrugs for the TRH-like tripeptide pGlu-Glu-Pro-NH2 were synthesized either by esterifying the Glu side-chain of the parent peptide in solution with alcohols in the presence of resin-bound dicyclohexylcarbodiimide or by solid-phase peptide chemistry. Affinities of these ester prodrugs to lipid membranes as predictors of the transport across the blood-brain barrier were compared by immobilized artificial membrane chromatography, and prodrug activation was tested in the brain tissue of experimental animals. Esters of pGlu-Glu-Pro-NH2 with long-chain primary alcohols emerged as potentially useful prodrugs to improve the central nervous system activity of pGlu-Glu-Pro-NH2 upon systemic administration, as revealed by the enhancement of analeptic activity in mice. (C) 2003 Elsevier Science Ltd. All rights reserved.