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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
biochemistry, genetics and molecular biology
Tyrosine phosphorylation controls brassinosteroid receptor activation by triggering membrane release of its kinase inhibitor
Genes and Development, Volume 25, No. 3, Year 2011
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Description
Receptor tyrosine kinases control many critical processes in metazoans, but these enzymes appear to be absent in plants. Recently, two Arabidopsis receptor kinases - BRASSINOSTEROID INSENSITIVE 1 (BRI1) and BRI1-ASSOCIATED KINASE1 (BAK1), the receptor and coreceptor for brassinosteroids - were shown to autophosphorylate on tyrosines. However, the cellular roles for tyrosine phosphorylation in plants remain poorly understood. Here, we report that the BRI1 KINASE INHIBITOR 1 (BKI1) is tyrosine phosphorylated in response to brassinosteroid perception. Phosphorylation occurs within a reiterated [KR][KR] membrane targeting motif, releasing BKI1 into the cytosol and enabling formation of an active signaling complex. Our work reveals that tyrosine phosphorylation is a conserved mechanism controlling protein localization in all higher organisms. © 2011 by Cold Spring Harbor Laboratory Press.
Authors & Co-Authors
Jaillais, Yvon
United States, San Diego
Salk Institute for Biological Studies
United States, Chevy Chase
Howard Hughes Medical Institute
Hothorn, Michael
United States, San Diego
Salk Institute for Biological Studies
Belkhadir, Youssef
United States, San Diego
Salk Institute for Biological Studies
United States, Chevy Chase
Howard Hughes Medical Institute
Morocco, Agdal Rabat
Moroccan Foundation for Advanced Science
Dabi, Tsegaye
United States, San Diego
Salk Institute for Biological Studies
United States, Chevy Chase
Howard Hughes Medical Institute
Nimchuk, Zachary L.
United States, Pasadena
California Institute of Technology
Meyerowitz, Elliot M.
United States, Pasadena
California Institute of Technology
Chory, Joanne
United States, San Diego
Salk Institute for Biological Studies
United States, Chevy Chase
Howard Hughes Medical Institute
Statistics
Citations: 250
Authors: 7
Affiliations: 4
Identifiers
Doi:
10.1101/gad.2001911
ISSN:
08909369
e-ISSN:
15495477