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1Laboratory of Dairy Research, Agricultural University of Athens, lera Odos 75, 118 55 Athens, Greece
2BCCM/LMG Culture Collection, Laboratory of Microbiology, University of Ghent, Belgium
3Laboratory of Microbiology, Technical University of Munich, Germany
4Faculty of Veterinary Medicine, University of Ghent, Belgiu
Author for correspondence: E. Tsakalidou. Tel: +301 529 46 76. Fax: + 301 346 08 85. e-mail: et{at}auadec.aua.ariadne-t.gr
ABSTRACT
Taxonomic studies were performed on some Streptococcus-like organisms isolated from naturally fermented Greek Kasseri cheese. By SDS-PAGE analysis of whole-cell proteins the group was found to be quite different from Streptococcus thermophilus. Comparative 16S and 23S rRNA sequence analyses showed that the isolates represent a new species within the genus Streptococcus, where they are most closely related to the Streptococcus bovis cluster. On the basis of these phylogenetic results and some phenotypic differences, a new species, Streptococcus macedonicus, is proposed. The type strain is ACA-DC 206.
Key Words: Kasseri cheese • Streptococcus macedonicus sp. nov. • phenotypic analysis • protein electrophoresis • rRNA sequencing
The EMBL accession numbers for the 16S and 23S rRNA sequences reported in this paper are Z94012 and Z94013, respectively.
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