TY - JOUR A1 - Moustakim, Moses A1 - Clark, Peter G. K. A1 - Trulli, Laura A1 - Fuentes de Arriba, Angel L. A1 - Ehebauer, Matthias T. A1 - Chaikuad, Apirat A1 - Murphy, Emma J. A1 - Mendez-Johnson, Jacqui A1 - Daniels, Danette A1 - Hou, Chun-Feng D. A1 - Lin, Yu-Hui A1 - Walker, John R. A1 - Hui, Raymond A1 - Yang, Hongbing A1 - Dorrell, Lucy A1 - Rogers, Catherine M. A1 - Monteiro, Octovia A1 - Fedorov, Oleg A1 - Huber, Kilian A1 - Knapp, Stefan A1 - Heer, Jag A1 - Dixon, Darren A1 - Brennan, Paul E. T1 - Discovery of a PCAF bromodomain chemical probe T2 - Angewandte Chemie. International edition N2 - The p300/CBP‐associated factor (PCAF) and related GCN5 bromodomain‐containing lysine acetyl transferases are members of subfamily I of the bromodomain phylogenetic tree. Iterative cycles of rational inhibitor design and biophysical characterization led to the discovery of the triazolopthalazine‐based L‐45 (dubbed L‐Moses) as the first potent, selective, and cell‐active PCAF bromodomain (Brd) inhibitor. Synthesis from readily available (1R,2S)‐(−)‐norephedrine furnished L‐45 in enantiopure form. L‐45 was shown to disrupt PCAF‐Brd histone H3.3 interaction in cells using a nanoBRET assay, and a co‐crystal structure of L‐45 with the homologous Brd PfGCN5 from Plasmodium falciparum rationalizes the high selectivity for PCAF and GCN5 bromodomains. Compound L‐45 shows no observable cytotoxicity in peripheral blood mononuclear cells (PBMC), good cell‐permeability, and metabolic stability in human and mouse liver microsomes, supporting its potential for in vivo use. KW - bromodomains KW - chemical probes KW - epigenetics KW - medicinal chemistry KW - structure-based design KW - Bromodomänen KW - Chemische Sonden KW - Epigenetik KW - Medizinische Chemie KW - Strukturbasiertes Design Y1 - 2016 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/47700 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-477006 SN - 1521-3773 SN - 1433-7851 N1 - © 2017 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. N1 - Identisch auch erschienen in der deutschsprachigen Ausgabe der Zeitschrift: Angewandte Chemie, 129.2017, S. 845–849, doi:10.1002/ange.201610816 VL - 56 IS - 3 SP - 827 EP - 831 PB - Wiley-VCH CY - Weinheim ER -