title: Plasmid-linked maltose utilization in Lactobacillus ssp.
abstract: Five strains of Lactobacillus plantarum and 4 strains of Lactobacillus ssp. isolated from fresh meat contained between 1 and 5 plasmids ranging in Mr from 1.3 to 49 MDa. Plasmid-curing studies suggested that maltose utilization is associated with a 49 MDa plasmid (pML291) in Lactobacillus sp. DB29 and 34.5 MDa plasmids in Lactobacillus ssp. DB27, DB28 and DB31. Restriction digestion of pML291 and a putative plasmid deletion derivative, pML292, isolated from a maltose negative mutant of DB29, generated common restriction fragments. Southern blot DNA-DNA hybridization using pML 291 as a probe indicated that there is strong homology between putative maltose plasmids.
mesh_terms: D015139:Blotting, Southern; D004269:DNA, Bacterial / Q000032:analysis; D005516:Food Microbiology; D007778:Lactobacillus / Q000235:genetics / Q000378:metabolism*; D008320:Maltose / Q000378:metabolism*; D008461:Meat Products; D009693:Nucleic Acid Hybridization; D010957:Plasmids
chemical_list: D004269:DNA, Bacterial; D008320:Maltose