Structure determination of antiviral compound SCH 38057 complexed with human rhinovirus 14

Anqiang Zhang, Raymond G. Nanni, Thomas Li, Gail Ferstandig Arnold, Deena A. Oren, Alfredo Jacobo-Molina, Roger L. Williams, Greg Kamer, Dawn A. Rubenstein, Yuling Li, Edward Rozhon, Stu Cox, Peter Buontempo, John O’Connell, Jerome Schwartz, George Miller, Barr Bauer, Richard Versace, Patrick Pinto, Ashit GangulyV. Girijavallabhan, Edward Arnold

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

SCH 38057 (1-[6-(2-chloro-4-methoxyphenoxy)-hexyl]imidazole hydrochloride) is a new, water-soluble antiviral that has inhibitory activities against a number of picornavirus infections. The structure of the human rhinovirus 14 (HRV14) complex with SCH 38057 was determined at 3·0 Å resolution by single-crystal diffraction techniques using synchrotron X-radiation. SCH 38057 was found to bind at the innermost end of the hydrophobic pocket within the capsid protein VP1, a locus of binding of other antipicornaviral agents; however, the complex differs from previously reported complexes in two important aspects. It leaves a considerable volume near entrance to the binding pocket unoccupied. In addition, the alterations in the conformation of the VP1 polypeptide are similar to, but more extensive than those observed in HRV14 complexes with other antiviral agents. Although only 9 amino acids of VP1 have close contacts with the SCH 38057 molecule (within 3·6 Å), at least 36 amino acids from both VP1 and VP3 have significantly altered conformations (Cα movement >0·5 Å versus native). The structures of complexes of HRV14 with SCH 38057 and WIN 51711 are compared. Aromatic ring interactions between picornavirus capsid residues and antiviral inhibitors are proposed to be among the major determinants for positioning of these compounds.

Original languageEnglish (US)
Pages (from-to)857-867
Number of pages11
JournalJournal of molecular biology
Volume230
Issue number3
DOIs
StatePublished - Apr 5 1993

All Science Journal Classification (ASJC) codes

  • Structural Biology
  • Molecular Biology

Keywords

  • Antiviral agent interactions
  • Conformational changes
  • Synchrotron X-radiation
  • Virus crystallography
  • Virus structure

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