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Atomic Force Microscopic Study of Chitinase Binding onto Chitin and Cellulose Surfaces
Kikkawa, Yoshihiro,Fukuda, Masato,Kimura, Tomoya,Kashiwada, Ayumi,Matsuda, Kiyomi,Kanesato, Masatoshi,Wada, Masahisa,Imanaka, Tadayuki,Tanaka, Takeshi American Chemical Society 2014 Biomacromolecules Vol.15 No.3
<P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/bomaf6/2014/bomaf6.2014.15.issue-3/bm500046f/production/images/medium/bm-2014-00046f_0004.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/bm500046f'>ACS Electronic Supporting Info</A></P>
Kimura, Fumiko,Horii, Shigeru,Arimoto, Itsuki,Doi, Toshiya,Yoshimura, Masato,Wada, Masahisa,Kimura, Tsunehisa American Chemical Society 2018 The Journal of physical chemistry A Vol.122 No.46
<P>Microcrystals of ErBa<SUB>2</SUB>Cu<SUB>4</SUB>O<SUB>8</SUB> suspended in a liquid medium were triaxially aligned by a frequency-modulated magnetic field and allowed a free rotational relaxation after the magnetic field was turned off. In situ X-ray diffraction measurements of the suspension were performed during relaxation, and the temporal change of the orientation fluctuation was monitored via broadening of the diffraction spots. The rotational diffusion constants were determined using the plot of the orientation fluctuation versus the elapsed time of rotational relaxation. The diffusion constants thus determined were in close agreement with those evaluated by the Stokes law but showed slight anisotropy, indicating that the microcrystals studied had shape anisotropy. The present method can provide a useful means for experimentally determining rotational diffusion constants of microcrystals suspended in viscous media. This paper shows that, due to the combination of the initial triaxial alignment and the subsequent monitoring of the relaxation process by means of X-ray diffraction, the diffusion constants along arbitrary crystallographic axes are determined separately.</P> [FIG OMISSION]</BR>