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Journal of Bacteriology, April 2005, p. 2513-2518, Vol. 187, No. 7
0021-9193/05/$08.00+0     doi:10.1128/JB.187.7.2513-2518.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.

Interaction between Individual Protein Components of the GerA and GerB Nutrient Receptors That Trigger Germination of Bacillus subtilis Spores

Takao Igarashi and Peter Setlow*

Department of Molecular, Microbial and Structural Biology, University of Connecticut Health Center, Farmington, Connecticut

Received 20 October 2004/ Accepted 29 December 2004

Germination of Bacillus subtilis spores via the GerA nutrient receptor was suppressed by GerAC lacking the diacylglycerylated cysteine essential for receptor function. Overexpression of the C protein of the GerB nutrient receptor also suppressed the function of both the GerA receptor and a variant GerB receptor, GerB*. These findings suggest that GerAC and GerBC interact with their respective A and B proteins in GerA or GerB receptors and that GerBC potentially interacts with GerAA-GerAB. However, GerAC did not appear to interact with GerBA-GerBB.

* Corresponding author. Mailing address: Department of Molecular, Microbial and Structural Biology, University of Connecticut Health Center, Farmington, CT 06030-3305. Phone: (860) 679-2607. Fax: (860) 679-3408. E-mail: setlow{at}nso2.uchc.edu.

Journal of Bacteriology, April 2005, p. 2513-2518, Vol. 187, No. 7
0021-9193/05/$08.00+0     doi:10.1128/JB.187.7.2513-2518.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.



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