Open AccessHeterogeneity of Putative Surface Layer Proteins in Lactobacillus helveticus
Author(s) -
Monica Gatti,
Lia Rossetti,
Maria Emanuela Fornasari,
Camilla Lazzi,
Giorgio Giraffa,
Erasmo Neviani
Publication year - 2005
Publication title -
applied and environmental microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.552
H-Index - 324
eISSN - 1070-6291
pISSN - 0099-2240
DOI - 10.1128/aem.71.11.7582-7588.2005
Subject(s) - lactobacillus helveticus , s layer , biology , gene , genetics , phylogenetic tree , lactobacillus , bacteria
The S-layer-encoding genes of 21Lactobacillus 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 theslpH1 gene ofL. helveticus CNRZ 892 and a second cluster which includes genes similar to that ofprtY . These results were further confirmed by Southern blot hybridization. This study demonstrates S-layer gene variability in the speciesL. helveticus .