An Arabidopsis rhomboid protease has roles in the chloroplast and in flower development
Thompson, Elinor P., Llewellyn Smith, Stefan G. and Glover, Beverley J. (2012) An Arabidopsis rhomboid protease has roles in the chloroplast and in flower development. Journal of Experimental Botany, 63 (10). pp. 3559-3570. ISSN 0022-0957
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Increasing numbers of cellular pathways are now recognized to be regulated via proteolytic processing events. The rhomboid family of serine proteases plays a pivotal role in a diverse range of pathways, activating and releasing proteins via regulated intramembrane proteolysis. The prototype rhomboid protease, rhomboid-1 in Drosophila, is the key activator of epidermal growth factor (EGF) receptor pathway signalling in the fly and thus affects multiple aspects of development. The role of the rhomboid family in plants is explored and another developmental phenotype, this time in a mutant of an Arabidopsis chloroplast-localized rhomboid, is reported here. It is confirmed by GFP-protein fusion that this protease is located in the envelope of chloroplasts and of chlorophyll-free plastids elsewhere in the plant. Mutant plants lacking this organellar rhomboid demonstrate reduced fertility, as documented previously with KOM—the one other Arabidopsis rhomboid mutant that has been reported in the literature—along with aberrant floral morphology.
|Additional Information:|| Published first online in Advance Access - 13 March 2012.  ISSN 0022-0957 (Print), 1460-2431 (Online).  Elinor P. Thompson, Stefan G. Llewellyn Smith, and Beverley J. Glover. An Arabidopsis rhomboid protease has roles in the chloroplast and in flower development. J. Exp. Bot. ers012 first published online March 13, 2012 doi:10.1093/jxb/ers012.  (c) 2012 The Author(s).  This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/ 3.0), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. This paper is available online free of all access charges (see http://jxb.oxfordjournals.org/open_access.html for further details).  The Journal of Experimental Botany is published on behalf of Society for Experimental Biology.|
|Uncontrolled Keywords:||arabidopsis, chloroplast, flower development, membrane, pollen, protease, proteolysis, rhomboid|
|Subjects:||Q Science > QK Botany|
|School / Department / Research Groups:||School of Science|
School of Science > Department of Life & Sports Science
|Last Modified:||20 Nov 2012 16:49|
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