SPA1, a WD-Repeat Protein Specific to Phytochrome A Signal Transduction-Reference-Cited by-同舟云学术

SPA1, a WD-Repeat Protein Specific to Phytochrome A Signal Transduction

Published:1999-04-16 Issue:5413 Volume:284 Page:496-499
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Hoecker Ute¹,Tepperman James M.¹,Quail Peter H.¹

Affiliation:

1. Department of Plant and Microbial Biology, University of California Berkeley, Berkeley, CA 94720, USA, and U.S. Department of Agriculture/Agricultural Research Service Plant Gene Expression Center, 800 Buchanan Street, Albany, CA 94710, USA.

Abstract

The five members of the phytochrome photoreceptor family of Arabidopsis thaliana control morphogenesis differentially in response to light. Genetic analysis has identified a signaling pathway that is specifically activated by phytochrome A. A component in this pathway, SPA1 (for “suppressor of phyA-105”), functions in repression of photomorphogenesis and is required for normal photosensory specificity of phytochrome A. Molecular cloning of the SPA1 gene indicates that SPA1 is a WD (tryptophan–aspartic acid)-repeat protein that also shares sequence similarity with protein kinases. SPA1 can localize to the nucleus, suggesting a possible function in phytochrome A–specific regulation of gene expression.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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