JXB Advance Access originally published online on February 10, 2008
Journal of Experimental Botany 2008 59(3):533-544; doi:10.1093/jxb/erm344
REVIEW-ARTICLE |
Annexins: multifunctional components of growth and adaptation
1Department of Plant Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EA, UK
2Marine Biological Association, The Laboratory, Citadel Hill, Plymouth Pl1 2PB, UK
3School of Biological Sciences, Plant Science Laboratories, University of Reading, Whiteknights, Reading RG6 6AS, UK
* To whom correspondence should be addressed. E-mail: jmd32{at}cam.ac.uk
Plant annexins are ubiquitous, soluble proteins capable of Ca2+-dependent and Ca2+-independent binding to endomembranes and the plasma membrane. Some members of this multigene family are capable of binding to F-actin, hydrolysing ATP and GTP, acting as peroxidases or cation channels. These multifunctional proteins are distributed throughout the plant and throughout the life cycle. Their expression and intracellular localization are under developmental and environmental control. The in vitro properties of annexins and their known, dynamic distribution patterns suggest that they could be central regulators or effectors of plant growth and stress signalling. Potentially, they could operate in signalling pathways involving cytosolic free calcium and reactive oxygen species.
Key words: Annexin, calcium, channel, GTP, peroxide, stress
Received 10 October 2007; Revised 3 December 2007 Accepted 4 December 2007