Conformational study of a highly specific CXCR4 inhibitor, T140, disclosing the close proximity of its intrinsic pharmacophores associated with strong anti-HIV activity.

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 Lett

authors

Tamamura H,Sugioka M,Odagaki Y,Omagari A,Kan Y,Oishi S,Nakashima H,Yamamoto N,Peiper SC,Hamanaka N,Otaka A,Fujii N

doi

10.1016/s0960-894x(00)00664-8

subject

Has Abstract

pub_date

2001-02-12 00:00:00

pages

359-62

issue

3

eissn

0960-894X

issn

1464-3405

pii

S0960894X00006648

journal_volume

11

pub_type

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