The term ‘evolutionary tinkering’ refers to evolutionary innovation by recombination of functional units, and includes the creation of novel proteins from pre-existing modules. A novel instance of evolutionary tinkering was recently discovered in the flowering plant genus Nicotiana: the conversion of a nuclear transcription factor into the plastid-resident protein WIN4 (wound-induced clone 4) involved in environmental stress responses. In this issue of the Biochemical Journal, Kodama and Sano now show that two steps are necessary for the establishment of the novel plastid protein: the acquisition of an internal translation initiation site and the use of multiple transcription starts to produce short mRNA variants that encode the plastid-targeted protein form.
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May 2007
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April 12 2007
Evolutionary tinkering: birth of a novel chloroplast protein
Tatjana Kleine;
Tatjana Kleine
1Lehrstuhl für Botanik, Department Biologie I, Ludwig-Maximilians-Universität, Menzinger Str. 67, 80638 München, Germany
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Dario Leister
Dario Leister
1
1Lehrstuhl für Botanik, Department Biologie I, Ludwig-Maximilians-Universität, Menzinger Str. 67, 80638 München, Germany
1To whom correspondence should be addressed (email leister@lrz.uni-muenchen.de).
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Publisher: Portland Press Ltd
Received:
March 01 2007
Accepted:
March 07 2007
Online ISSN: 1470-8728
Print ISSN: 0264-6021
The Authors Journal compilation, The Biochemical Society, London
2007
Biochem J (2007) 403 (3): e13–e14.
Article history
Received:
March 01 2007
Accepted:
March 07 2007
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Citation
Tatjana Kleine, Dario Leister; Evolutionary tinkering: birth of a novel chloroplast protein. Biochem J 1 May 2007; 403 (3): e13–e14. doi: https://doi.org/10.1042/BJ20070312
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