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Applied and Environmental Microbiology, November 2005, p. 7582-7588, Vol. 71, No. 11
0099-2240/05/$08.00+0     doi:10.1128/AEM.71.11.7582-7588.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.

SHORT REPORT

Heterogeneity of Putative Surface Layer Proteins in Lactobacillus helveticus

Monica Gatti,1* Lia Rossetti,2 Maria Emanuela Fornasari,2 Camilla Lazzi,1 Giorgio Giraffa,2 and Erasmo Neviani1

Department of Genetic Anthropology Evolution, University of Parma, 43100 Parma, Italy,1 Istituto Sperimentale Lattiero Caseario, 26900 Lodi, Italy2

Received 29 October 2004/ Accepted 8 July 2005

The S-layer-encoding genes of 21 Lactobacillus helveticus strains were characterized. Phylogenetic analysis based on the identified S-layer genes revealed two main clusters, one which includes a sequence similar to that of the slpH1 gene of L. helveticus CNRZ 892 and a second cluster which includes genes similar to that of prtY. These results were further confirmed by Southern blot hybridization. This study demonstrates S-layer gene variability in the species L. helveticus.

* Corresponding author. Mailing address: Department of Genetic Anthropology Evolution, Parco Area delle Scienze 11A, University of Parma, 43100 Parma, Italy. Phone: 390521905479. Fax: 390521905604. E-mail: monica.gatti{at}unipr.it.

Applied and Environmental Microbiology, November 2005, p. 7582-7588, Vol. 71, No. 11
0099-2240/05/$08.00+0     doi:10.1128/AEM.71.11.7582-7588.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.





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Copyright © 2005 by the American Society for Microbiology. All rights reserved.