Staphy/ococcus carnosus TM300

* Department of Genetics and Molecular Biology, Faculty of Science, Masaryk University, 61 137 Brno, Czech Republic A genome map of Staphylococcus carnosus TM300, an important microorganism in the food industry and long used as a starter culture, was constructed by pulsed-f ield gel electrophoresis of DNA fragments obtained after digestion with Notl, Sfil and Apal. The size of the chromosome was estimated to be 2590 kb. The fragments were assembled into a physical map using a combination of complementary methods including multiple and partial digests of genomic DNA, hybridization with homologous gene probes, and cross-Southern hybridization. Fifteen genes or gene clusters were positioned on the physical map by Southern hybridization analysis. The map provides a basis for further analysis of the S. carnosus chromosome.