Site-specific mutations of the N-terminal threonines in the D1 protein affects photoautotrophic growth but not D1 protein stability in Synechocystis 6803

Site-specific mutations of the N-terminal threonines in the D1 protein affects photoautotrophic... The cyanobacterium Synechocystis 6803 was engineered to produce a D1 protein where one or more of the N-terminal threonines at positions 2, 3 and 4 were replaced by other amino acid residues. No phenotypic effects were found for the T2S or T2L mutations, whereas the T2V, T2L;T4V and T2V;T3V;T4V mutations resulted in reduced photoautotrophic growth rate and oxygen evolving activity. The mutant strain T2V;T3V;T4V exhibited an oxygen evolution activity that was only half of that for the wild-type strain. Despite of that, both accumulation and stability of the D1 protein in the thylakoid membrane appeared unaffected in the mutant. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Molecular Biology Springer Journals

Site-specific mutations of the N-terminal threonines in the D1 protein affects photoautotrophic growth but not D1 protein stability in Synechocystis 6803

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Publisher
Springer Journals
Copyright
Copyright © 1998 by Kluwer Academic Publishers
Subject
Life Sciences; Biochemistry, general; Plant Sciences; Plant Pathology
ISSN
0167-4412
eISSN
1573-5028
D.O.I.
10.1023/A:1005986403381
Publisher site
See Article on Publisher Site

Abstract

The cyanobacterium Synechocystis 6803 was engineered to produce a D1 protein where one or more of the N-terminal threonines at positions 2, 3 and 4 were replaced by other amino acid residues. No phenotypic effects were found for the T2S or T2L mutations, whereas the T2V, T2L;T4V and T2V;T3V;T4V mutations resulted in reduced photoautotrophic growth rate and oxygen evolving activity. The mutant strain T2V;T3V;T4V exhibited an oxygen evolution activity that was only half of that for the wild-type strain. Despite of that, both accumulation and stability of the D1 protein in the thylakoid membrane appeared unaffected in the mutant.

Journal

Plant Molecular BiologySpringer Journals

Published: Oct 6, 2004

References

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