Abstract:
:We report the solution structure of T140, a truncated polyphemusin peptide analogue that efficiently inhibits infection of target cells by T-cell line-tropic strains of HIV-1 through its specific binding to a chemokine receptor, CXCR4. Nuclear magnetic resonance analysis and molecular dynamic calculations revealed that T140 has a rigidly structured conformation constituted by an antiparallel beta-sheet and a type II' beta-turn. A protuberance is formed on one side of the beta-sheet by the side-chain functional groups of the three amino acid residues (L-3-(2-naphthyl)alanine, Tyr5 and Arg14), each of which is indispensable for strong anti-HIV activity. These findings provide a rationale to dissect the structural basis for the ability of this compound to block the interaction between CXCR4 and envelope glycoproteins from T-tropic strains of HIV-1.
journal_name
Bioorg Med Chem Lettjournal_title
Bioorganic & medicinal chemistry lettersauthors
Tamamura H,Sugioka M,Odagaki Y,Omagari A,Kan Y,Oishi S,Nakashima H,Yamamoto N,Peiper SC,Hamanaka N,Otaka A,Fujii Ndoi
10.1016/s0960-894x(00)00664-8subject
Has Abstractpub_date
2001-02-12 00:00:00pages
359-62issue
3eissn
0960-894Xissn
1464-3405pii
S0960894X00006648journal_volume
11pub_type
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