Roles of hydration water molecules in molecular packing of the killer toxin from Pichia farinosa in its crystalline state investigated by cryogenic X-ray crystallography

Masayoshi Nakasako, Fumihiko Tsuchiya, Yoji Arata

研究成果: Article査読

6 被引用数 (Scopus)

抄録

The hydration structures around the killer toxin from Pichia farinosa were investigated by cryogenic X-ray crystallography. In particular, those contributing to the molecular association and the crystal contacts were analyzed with respect to the geometry and the networks of hydrogen bonds. The hydration water molecules attached on the surface so as to make up the surface shape in the contact complementary and mediated the intermolecular interactions through the networks of hydrogen bonds. Careful inspection of the contact area led to a proposal as to the molecular association mode of the toxin to determine the biological function in cells. In addition, the water-associated protein-protein interactions were approximated well by a simple theoretical equation on the solvation force expected in confined geometry. The present analysis may provide a way to analyze the crystal contact and molecular recognition in macromolecules in aqueous solution.

本文言語English
ページ(範囲)211-225
ページ数15
ジャーナルBiophysical Chemistry
95
3
DOI
出版ステータスPublished - 2002 3 28

ASJC Scopus subject areas

  • 生物理学
  • 生化学
  • 有機化学

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