J
John H. Shibata
Researcher at University of Washington
Publications - 8
Citations - 236
John H. Shibata is an academic researcher from University of Washington. The author has contributed to research in topics: Phase (matter) & Relaxation (NMR). The author has an hindex of 8, co-authored 8 publications receiving 236 citations.
Papers
More filters
Journal ArticleDOI
NMR relaxation in DNA. I. The contribution of torsional deformation modes of the elastic filament.
TL;DR: Dynamic light‐scattering and other evidence is presented that the remarkable loss of nmr signal from DNA on addition of ethidium bromide, as reported by Hogan and Jardetzky, is actually a consequence of phase separation in such concentrated solutions.
Journal ArticleDOI
Evidence for allosteric transitions in secondary structure induced by superhelical stress.
TL;DR: The torsion constants (alpha) of pBR322, pUC8 and M13mp7 (replicative form) DNAs are determined by time-resolved fluorescence polarization anisotropy at various times subsequent to linearization, consistent with the hypothesis that supercoiling induces two successive allosteric transitions to alternative global secondary structures.
Journal ArticleDOI
Rotational dynamics of DNA from 10−10 to 10−5 seconds: Comparison of theory with optical experiments
TL;DR: Optical anisotropy data spanning a very wide time range are analyzed using a recently developed theory for filamentous macromolecules that can bend, twist, and also admit overdamped local libration (or wobble) of the chromophore.
Journal ArticleDOI
Deformational dynamics and NMR relaxation of supercoiled DNAs.
Jörg Langowski,Bryant S. Fujimoto,David E. Wemmer,Albert S. Benight,Gary P. Drobny,John H. Shibata,J. Michael Schurr +6 more
TL;DR: The conformation and internal dynamics of supercoiled pUC 8 DNA (2717 bp) are examined by dynamic light scattering, and the magnitude and uniformity of its torsional rigidity are determined using time‐resolved fluorescence polarization anisotropy of intercalated ethidium dye.
Journal ArticleDOI
A theory of aggregation in the thermal denaturation region of multistrand biopolymers
TL;DR: In this article, a theory explicitly allowing the possibility of aggregation of multistrand biopolymers is proposed and it is found that the same secondary bonds responsible for stabilizing the native structure at low temperature will promote aggregation in the thermal denaturation region for sufficiently long chains.