<i>Arabidopsis</i> NPH3: A NPH1 Photoreceptor-Interacting Protein Essential for Phototropism

  • Andrei Motchoulski
    Division of Biological Sciences, University of Missouri, Columbia, MO 65211, USA.
  • Emmanuel Liscum
    Division of Biological Sciences, University of Missouri, Columbia, MO 65211, USA.

書誌事項

公開日
1999-10-29
DOI
  • 10.1126/science.286.5441.961
公開者
American Association for the Advancement of Science (AAAS)

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説明

<jats:p> Phototropism of <jats:italic>Arabidopsis thaliana</jats:italic> seedlings in response to a blue light source is initiated by nonphototropic hypocotyl 1 (NPH1), a light-activated serine-threonine protein kinase. Mutations in three loci [ <jats:italic>NPH2</jats:italic> , root phototropism 2 ( <jats:italic>RPT2</jats:italic> ), and <jats:italic>NPH3</jats:italic> ] disrupt early signaling occurring downstream of the NPH1 photoreceptor. The <jats:italic>NPH3</jats:italic> gene, now cloned, encodes a NPH1-interacting protein. NPH3 is a member of a large protein family, apparently specific to higher plants, and may function as an adapter or scaffold protein to bring together the enzymatic components of a NPH1-activated phosphorelay. </jats:p>

収録刊行物

  • Science

    Science 286 (5441), 961-964, 1999-10-29

    American Association for the Advancement of Science (AAAS)

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