Journal Article

Structure and Function of Heterotrimeric G Proteins in Plants

Yukiko Fujisawa, Hisaharu Kato and Yukimoto Iwasaki

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 42, issue 8, pages 789-794
Published in print August 2001 | ISSN: 0032-0781
Published online August 2001 | e-ISSN: 1471-9053 | DOI: http://dx.doi.org/10.1093/pcp/pce111
Structure and Function of Heterotrimeric G Proteins in Plants

More Like This

Show all results sharing these subjects:

  • Biochemistry
  • Molecular and Cell Biology
  • Plant Sciences and Forestry

GO

Show Summary Details

Preview

Heterotrimeric G proteins are mediators that transmit the external signals via receptor molecules to effector molecules. The G proteins consist of three different subunits: α, β, and γ subunits. The cDNAs or genes for all the α, β, and γ subunits have been isolated from many plant species, which has contributed to great progress in the study of the structure and function of the G proteins in plants. In addition, rice plants lacking the α subunit were generated by the antisense method and a rice mutant, Daikoku d1, was found to have mutation in the α-subunit gene. Both plants show abnormal morphology such as dwarfism, dark green leaf, and small round seed. The findings revealed that the G proteins are functional molecules regulating some body plans in plants. There is evidence that the plant G proteins participate at least in signaling of gibberellin at low concentrations. In this review, we summarize the currently known information on the structure of plant heterotrimeric G proteins and discuss the possible functions of the G proteins in plants.

Keywords: Key words: Gibberellin — Heterotrimeric G protein — Signal transduction.

Journal Article.  4519 words.  Illustrated.

Subjects: Biochemistry ; Molecular and Cell Biology ; Plant Sciences and Forestry

Full text: subscription required

How to subscribe Recommend to my Librarian

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.