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Structure of CC Chemokine Receptor 5 with a Potent Chemokine Antagonist Reveals Mechanisms of Chemokine Recognition and Molecular Mimicry by HIV.

Immunity. 2017; 
Zheng Yi,Han Gye Won,Abagyan Ruben,Wu Beili,Stevens Raymond C,Cherezov Vadim,Kufareva Irina,Handel Tra
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摘要

CCR5 is the primary chemokine receptor utilized by HIV to infect leukocytes, whereas CCR5 ligands inhibit infection by blocking CCR5 engagement with?HIV gp120. To guide the design of improved therapeutics, we solved the structure of CCR5 in complex with chemokine antagonist [5P7]CCL5. Several structural features appeared to contribute to the anti-HIV potency of [5P7]CCL5, including the distinct chemokine orientation relative to the receptor, the near-complete occupancy of the receptor binding pocket, the dense network of intermolecular hydrogen bonds, and the similarity of binding determinants with the FDA-approved HIV inhibitor Maraviroc. Molecular modeling indicated that HIV gp120 mimicked the che... More

关键词

CCL5/RANTES,CCR5-gp120 interaction,Chemokine antagonist,G protein-coupled receptor (GPCR),HIV entry inhibitor,V3 loop,maraviroc,membrane protein structure,two-site model,viral mim