Armadillo Repeat Proteins Versatile Regulators of Plant Development and Signalling

Juliet C. Coates

School of Biosciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK [email protected]

Abstract Proteins containing tandem copies of the Armadillo repeat motif are evolution-arily ancient and have diverse cellular roles. Genome sequencing has revealed a plethora of Armadillo repeat-containing proteins in plants. Studies in Arabidopsis, Brassica, tobacco, potato and rice confirm that plant Armadillo repeat proteins have a wide range of biological functions. A large number of plant Armadillo proteins appear to regulate targeted protein degradation, which is a fundamental part of many plant developmental processes. This chapter will review the current knowledge of plant Armadillo protein functions during growth and development.

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