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Infection and Immunity, May 2006, p. 3002-3005, Vol. 74, No. 5
0019-9567/06/$08.00+0     doi:10.1128/IAI.74.5.3002-3005.2006
Copyright © 2006, American Society for Microbiology. All Rights Reserved.

Role of the Porphyromonas gingivalis InlJ Protein in Homotypic and Heterotypic Biofilm Development

Cindy A. Capestany, Masae Kuboniwa, Il-Young Jung,{dagger} Yoonsuk Park, Gena D. Tribble, and Richard J. Lamont*

Department of Oral Biology, College of Dentistry, University of Florida, Gainesville, Florida 32607

Received 9 December 2005/ Returned for modification 16 January 2006/ Accepted 6 February 2006

The oral pathogen Porphyromonas gingivalis expresses a homolog of the internalin family protein InlJ. Inactivation of inlJ reduced monospecies biofilm formation by P. gingivalis. In contrast, heterotypic P. gingivalis-Streptococcus gordonii biofilm formation was enhanced in the InlJ-deficient mutant. The results indicate a nuanced role for InlJ in regulating biofilm accumulations of P. gingivalis.

* Corresponding author. Mailing address: Department of Oral Biology, College of Dentistry, University of Florida, Gainesville, FL 32610-0424. Phone: (352) 392-5067. Fax: (352) 392-2361. E-mail: rlamont{at}dental.ufl.edu.

Editor: V. J. DiRita

{dagger} Present address: Department of Conservative Dentistry, College of Dentistry, Yonsei University, Sinchon-dong, Seodaemun-gu, Seoul 120-752, Korea.

Infection and Immunity, May 2006, p. 3002-3005, Vol. 74, No. 5
0019-9567/06/$08.00+0     doi:10.1128/IAI.74.5.3002-3005.2006
Copyright © 2006, American Society for Microbiology. All Rights Reserved.



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