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Kohji Hasunuma Edit Profile

Biologist , educator

Kohji Hasunuma, Japanese biologist, educator. Member New York Academy of Sciences, International Biographical Center (life fellow since 1998, deputy director general since 1998) (Cambridge), American Biographical Institute (life fellow since 1998, deputy governor since 1998, Research board advisory since 1998).

Background

Hasunuma, Kohji was born on November 12, 1943 in Tokyo. Son of Chiyoji and Fumie Hasunuma.

Education

Bachelor of Science in Biological Science, Tokyo University, 1966. Master of Science in Biological Science, Tokyo University, 1968. Doctor of Science in Biological Science, Tokyo University, 1971.

Career

Research associate Tokyo University, 1971-1979. Associate professor National Institute Basic Biology, Okazaki, Japan, 1979-1990. Professor Yokohama (Japan) City University, since 1990.

Visiting researcher Carnegie Institution Washington, 1990. Member Committee Natural Science in National Institute Academic Degree, since 1994.

Achievements

  • Achievements include: detection of orthophosphate repressible cyclic phosphodiesterases (cPDase) in the mycelia of Neurospora crassa, circadian oscillation of the concentrations of cAMP and cGMP in the mycelia of N. crassa, and in Lemna paucicostata 381, the stimulation of flowering when cGMP was administered to it, 2 species of cyclic phosphodiesterases activated by heating and by Mg2+. Isolatation of mutants in the cPDases, cpd-1 and cpd-2 with reduced activities also in the adenylate cyclase resulting in the reduced concentrations of cAMP in the mycelia. Development of a hypothesis that mutual regulation of concentrations of 2d messengers including cAMP, cGMP, cytosolic free Ca2+ concentration, diacyl glycerol and inositol trisphosphate may constitute underlying mechanism of circadian rhythm which is supported by research, including in vitro systems to analyze molecular mechanism of light signal transduction.

Works

  • Other Work

    • Author: (with H. Hirano) Signal Transduction in Plants (in Japanese), 1996, (with N. Kimura and S. Tokunaga) Signal Transduction of Light (in Japanese), 1999. Member editorial board International Journal Cell Biology, Cytologia, since 1991. Contributor papers to professional journals.

      Reviewer in field. Honorary theme editor Encyclopedia Life Support Systems, United Nations Educational, since 1999.

Membership

Member New York Academy of Sciences, International Biographical Center (life fellow since 1998, deputy director general since 1998) (Cambridge), American Biographical Institute (life fellow since 1998, deputy governor since 1998, Research board advisory since 1998).

Connections

Married Miyako Abe, March 14, 1971. Children: Madoka Rai, Itaru.

father:
Chiyoji Hasunuma

mother:
Fumie Hasunuma

spouse:
Miyako Abe

child:
Itaru Hasunuma

child:
Madoka Rai Hasunuma