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.
Converting a weaker ATP-binding site inhibitor into a potent hetero-bivalent ligand by tethering to a unique peptide sequence derived from the same kinase
作者:Samanth Reddy Kedika、D. Gomika Udugamasooriya
DOI:10.1039/c8ob01406j
日期:——
binding site directed moiety or a ligand to an ATP-binding site inhibitor has been used as a strategy to increase kinase binding affinity and specificity. The moieties typically used here as the second binding partner are varied from simple organic groups to ligands such as peptides derived from substrate binding site sequences. So far these hetero-bivalent ligands were developed targeting additional