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Journal of Bacteriology, March 2007, p. 1722-1726, Vol. 189, No. 5
0021-9193/07/$08.00+0     doi:10.1128/JB.01428-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.

Specific Binding of D1 Protein Degradation Products to the psbAI Promoter in Synechococcus sp. Strain PCC 7942{triangledown}

Christian Stelljes and Friederike Koenig*

Molekulare Pflanzenphysiologie, Universität Bremen, Leobener Strasse, 28359 Bremen, Germany

Received 8 September 2006/ Accepted 8 December 2006

The D1:1 protein and its potentially occurring degradation products were overexpressed in Escherichia coli. Protein-DNA interaction is shown for the promoter region of psbAI. The D1:1 degradation products may be involved in transcription regulation of psbAI by binding in the promoter region. Additionally, C-terminal fragments of the D1 protein bind to a sequence with similarity to isiB, a gene which encodes a flavodoxin-like protein.

* Corresponding author. Mailing address: Molekulare Pflanzenphysiologie, Universität Bremen, Leobener Str., 28359 Bremen, Germany. Phone: (49)-421-2184392. Fax: (49)-421-2184042. E-mail: fkoenig{at}uni-bremen.de.

{triangledown} Published ahead of print on 22 December 2006.

Journal of Bacteriology, March 2007, p. 1722-1726, Vol. 189, No. 5
0021-9193/07/$08.00+0     doi:10.1128/JB.01428-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.



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