A rapid array-based protocol is presented by which a modest affinity protein-binding small molecule can be appended to a library of peptoids via click chemistry. The array can then be screened for improved ligands that exhibit a higher affinity for the protein target. (C) 2009 Elsevier Ltd. All rights reserved.
Periodate-Triggered Cross-Linking Reveals Sug2/Rpt4 as the Molecular Target of a Peptoid Inhibitor of the 19S Proteasome Regulatory Particle
作者:Hyun-Suk Lim、Di Cai、Chase T. Archer、Thomas Kodadek
DOI:10.1021/ja075469+
日期:2007.10.1
This study describes the identification of the protein target of the first chemical inhibitor (RIP-1) of t he 19S regulatory particle (RP) of the 25S proteasome. Periodate-triggered chemical cross-linking of DOPA-conjugate RIP-1 and the 26S proteasome identified Sug2/Rpt4, one of the six ATPases in the 19S as the molecular target of RIP-1 for Sug2/Rpt4 was domonstarated by examining cross-linking reactions with each ATPase if tge 19S RP. RIP-1 should provide a useful biological tool to probe the various biological roles of Sug2/Rpt4.