Arabidopsis NPH3: A NPH1 photoreceptor-interacting protein essential for phototropism.
Phototropism of Arabidopsis thaliana 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 [NPH2, root phototropism 2 (RPT2), and NPH3] disrupt early signaling occurring downstream of the NPH1 photoreceptor. The NPH3 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.
Mesh Terms:
Amino Acid Sequence, Arabidopsis, Arabidopsis Proteins, Cell Membrane, Cloning, Molecular, Escherichia coli, Molecular Sequence Data, Phosphoproteins, Photoreceptor Cells, Invertebrate, Phototropism, Plant Proteins, Protein Binding, Two-Hybrid System Techniques
Amino Acid Sequence, Arabidopsis, Arabidopsis Proteins, Cell Membrane, Cloning, Molecular, Escherichia coli, Molecular Sequence Data, Phosphoproteins, Photoreceptor Cells, Invertebrate, Phototropism, Plant Proteins, Protein Binding, Two-Hybrid System Techniques
Science
Date: Oct. 29, 1999
PubMed ID: 10542152
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