2r3c

Structure of the gp41 N-peptide in complex with the HIV entry inhibitor PIE1

spinqualitylabelsall models 2r3c, resolution 1.73Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2r3c is a 4 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: CL, YT3 NonStd Res: ACE, DAL, DCY, DGL, DGN, DLE, DLY, DPR, DSN, DTR, NH2 Related: 2r5b, 2r5d Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum Publication Abstract from PubMed During HIV-1 entry, the highly conserved gp41 N-trimer pocket region becomes transiently exposed and vulnerable to inhibition. Using mirror-image phage display and structure-assisted design, we have discovered protease-resistant D-amino acid peptides (D-peptides) that bind the N-trimer pocket with high affinity and potently inhibit viral entry. We also report high-resolution crystal structures of two of these D-peptides in complex with a pocket mimic that suggest sources of their high potency. A trimeric version of one of these peptides is the most potent pocket-specific entry inhibitor yet reported by three orders of magnitude (IC(50) = 250 pM). These results are the first demonstration that D-peptides can form specific and high-affinity interactions with natural protein targets and strengthen their promise as therapeutic agents. The D-peptides described here address limitations associated with current L-peptide entry inhibitors and are promising leads for the prevention and treatment of HIV/AIDS. Potent D-peptide inhibitors of HIV-1 entry.,Welch BD, VanDemark AP, Heroux A, Hill CP, Kay MS Proc Natl Acad Sci U S A. 2007 Oct 23;104(43):16828-33. Epub 2007 Oct 17. PMID:17942675 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Gp41

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