Elastic constants in tetragonal hen egg-white lysozyme crystals containing large amount of water

H. Koizumi, M. Tachibana, K. Kojima

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Transverse sound velocity of cross-linked tetragonal hen egg-white (HEW) lysozyme crystals containing large amount of water in the crystal was measured using ultrasonic pulse-echo method. All elastic constants of cross-linked crystals were observed to be C11 = C22 =5.50 GPa, C12 =4.33 GPa, C13 = C23 =3.94 GPa, C33 =5.22 GPa, C44 = C55 =0.68 GPa, and C66 =0.84 GPa, respectively. We found that the elastic constants of the cross-linked crystals are identical to those of the intrinsic ones without cross-linking. Moreover, we found that tetragonal HEW lysozyme crystals that enclose large amount of water show decreased elastic constants (softening). In particular, the shear elastic constants C44 = C55 and C66 showed more softening effect comparing with other elastic components.

Original languageEnglish
Article number061917
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume79
Issue number6
DOIs
Publication statusPublished - 2009 Jun 12

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Condensed Matter Physics

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