The effect of metal ions on the binding of ethanol to human alcohol dehydrogenase β2β2

Hsuan Liang Liu, Yih Ho, Chia Ming Hsu

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Molecular docking simulations were performed in this study to investigate the importance of both structural and catalytic zinc ions in the human alcohol dehydrogenase β2β2 on substrate binding. The structural zinc ion is not only important in maintaining the structural integrity of the enzyme, but also plays an important role in determining substrate binding. The replacement of the catalytic zinc ion or both catalytic and structural zinc ions with Cu2+ results in better substrate binding affinity than with the wild-type enzyme. The width of the bottleneck formed by L116 and V294 in the substrate binding pocket plays an important role for substrate entrance. In addition, unfavorable contacts between the substrate and T48 and F93 prevent the substrate from moving too close to the metal ion. The optimal binding position occurs between 1.9 and 2.4 Å from the catalytic metal ion.

Original languageEnglish
Pages (from-to)302-312
Number of pages11
JournalJournal of Biomedical Science
Volume10
Issue number3
DOIs
Publication statusPublished - 2003

Keywords

  • Alcohol dehydrogenase
  • Binding affinity
  • Docking
  • Substrate binding pocket
  • Zinc ion

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

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