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Infection and Immunity, June 2004, p. 3655-3657, Vol. 72, No. 6
0019-9567/04/$08.00+0     DOI: 10.1128/IAI.72.6.3655-3657.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.

Porphyromonas gingivalis RgpA and Kgp Proteinases and Adhesins Are C Terminally Processed by the Carboxypeptidase CPG70

Paul D. Veith, Yu-Yen Chen, and Eric C. Reynolds*

Centre for Oral Health Science, School of Dental Science, The University of Melbourne, Melbourne, Victoria 3000, Australia

Received 18 August 2003/ Returned for modification 22 September 2003/ Accepted 1 March 2004

Porphyromonas gingivalis is a bacterial pathogen that produces the polyproteins RgpA and Kgp, which are proteolytically processed into proteinases and adhesins. We have demonstrated that the RgpA and Kgp proteinases and adhesins are C terminally processed by carboxypeptidase CPG70 by sequencing C-terminal peptides from both the wild type and an isogenic CPG70 mutant, using ion trap mass spectrometry.

* Corresponding author. Mailing address: Centre for Oral Health Science, School of Dental Science, The University of Melbourne, 711 Elizabeth St., Melbourne, Victoria 3000, Australia. Phone: (61) 3 9341 0270. Fax: (61) 3 9341 0236. E-mail: e.reynolds{at}unimelb.edu.au.

Editor: A. D. O'Brien

Infection and Immunity, June 2004, p. 3655-3657, Vol. 72, No. 6
0019-9567/04/$08.00+0     DOI: 10.1128/IAI.72.6.3655-3657.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.



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