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Journal of Bacteriology, June 2001, p. 3795-3799, Vol. 183, No. 12
0021-9193/01/$04.00+0   DOI: 10.1128/JB.183.12.3795-3799.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.

NtcA-Dependent Expression of the devBCA Operon, Encoding a Heterocyst-Specific ATP-Binding Cassette Transporter in Anabaena spp.

Gabriele Fiedler,1 Alicia M. Muro-Pastor,2 Enrique Flores,2 and Iris Maldener1,*

Lehrstuhl für Zellbiologie und Pflanzenphysiologie, Universität Regensburg, D-93040 Regensburg, Germany,1 and Instituto de Bioquímica Vegetal y Fotosíntesis, CSIC-Universidad de Sevilla, Centro de Investigaciones Científicas Isla de la Cartuja, E-41092 Sevilla, Spain2

Received 18 December 2000/Accepted 30 March 2001

The devBCA operon, encoding subunits of an ATP-binding cassette exporter, is essential for differentiation of N2-fixing heterocysts in Anabaena spp. Nitrogen deficiency-dependent transcription of the operon and the use of its transcriptional start point, located 762 (Anabaena variabilis strain ATCC 29413-FD) or 704 (Anabaena sp. strain PCC 7120) bp upstream of the translation start site, were found to require the global nitrogen transcriptional regulator NtcA. Furthermore, NtcA was shown to bind in vitro to the promoter of devBCA.

* Corresponding author. Mailing address: Lehrstuhl für Zellbiologie und Pflanzenphysiologie, Universität, Regensburg, D-93040 Regensburg, Germany. Phone: (0049) (941) 943 3033. Fax: (0049) (941) 943 3352. E-mail: iris.maldener{at}biologie.uni-regensburg.de.

Journal of Bacteriology, June 2001, p. 3795-3799, Vol. 183, No. 12
0021-9193/01/$04.00+0   DOI: 10.1128/JB.183.12.3795-3799.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.


This article has been cited by other articles:

  • Valladares, A., Flores, E., Herrero, A. (2008). Transcription Activation by NtcA and 2-Oxoglutarate of Three Genes Involved in Heterocyst Differentiation in the Cyanobacterium Anabaena sp. Strain PCC 7120. J. Bacteriol. 190: 6126-6133 [Abstract] [Full Text]  
  • Wang, Y., Xu, X. (2005). Regulation by hetC of Genes Required for Heterocyst Differentiation and Cell Division in Anabaena sp. Strain PCC 7120. J. Bacteriol. 187: 8489-8493 [Abstract] [Full Text]  
  • Olmedo-Verd, E., Flores, E., Herrero, A., Muro-Pastor, A. M. (2005). HetR-Dependent and -Independent Expression of Heterocyst-Related Genes in an Anabaena Strain Overproducing the NtcA Transcription Factor. J. Bacteriol. 187: 1985-1991 [Abstract] [Full Text]  
  • Liu, D., Golden, J. W. (2002). hetL Overexpression Stimulates Heterocyst Formation in Anabaena sp. Strain PCC 7120. J. Bacteriol. 184: 6873-6881 [Abstract] [Full Text]  
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