Thesis (Ph.D.), University of East Anglia, School of Biological Sciences, 1992.
The group II intron from the low-G+C gram-positive bacterium Lactococcus lactis was the first bacterial group II intron shown to splice and mobilize in vivo. This retroelement interrupts the relaxase gene (ltrB) of three L. lactis conjugative elements: plasmids pRS01 and pAH90 and the chromosomal sex factor. Conjugative transfer of a plasmid harboring a segment of the pRS01 Cited by: Lactococcus lactis is of great importance for the nutrition of hundreds of millions of people worldwide. This paper describes the genome sequence of Lactococcus lactis subsp. cremoris MG, the lactococcal strain most intensively studied throughout the world. The 2,,bp genome contains 81 pseudogenes and encodes 2, proteins. Of the unique proteins, 47 belong to the Cited by: A chemostat is used to obtain experimental results for culture of Lactococcus lactis subsp. lactis under steady-state conditions. The rate of glucose uptake is measured as mol h −1 per g dry weight of cells. The yield of lactic acid from glucose is found to be mol mol −1 and the yield of formic acid from glucose is mol mol −1. (a). Lactococcus lactis phage , complete genome. DBLINKS: ViralZone: genus, family. Scientific Name: Lactococcus lactis phage PG [TAX] Sequence and organization of the lactococcal prolate-headed bIL67 phage genome. Journal: Microbiology. Nov; (Pt 11)
Lactococcus lactis is one of the most extensively characterized lactic acid bacteria, from physiological traits to industrial exploitation. Since last decade, L. lactis has been developed into cell factories for the production of bioactive compounds such as enzymes, vaccine antigens and natural products. However, its precise and efficient genome editing tools is still required to make L. Lactococcus lactis is a nonpathogenic AT-rich gram-positive bacterium closely related to the genus Streptococcus and is the most commonly used cheese starter. It is also the best-characterized lactic acid bacterium. We sequenced the genome of the laboratory strain IL, using a novel two-step strategy that comprises diagnostic sequencing of the entire genome and a shotgun polishing step. The complete genome sequence of the lactic acid bacterium Lactococcus lactis ssp. lactis IL Journal: Genome Res () DOI. The MICs of antimicrobial agents contained in the SCEPTOR Streptococcus MIC panels (Becton Dickinson Microbiology Systems) were determined for Lactococcus lactis, L. garvieae, and unknown Lactococcus species. Several isolates had reduced susceptibilities to many of the antimicrobial agents contained in the panel. For L. garvieae, the MICs of penicillin and, possibly, cephalothin were higher.
This scope of this chapter is limited to discussions of Lactobacillus, Lactococcus, Leuconostoc, Pediococcus, and Streptococcus thermophilus, and summarizes and abstracts the major areas of research of lactic acid bacteria. The historical association of the lactic acid bacteria with milk fermentation has encouraged a substantial amount of research on the biochemistry and genetics of lactose. Lactococcus lactis is a member of the mesophilic group of bacteria forming one of the main constituents in both industrial and artisanal starter cultures. The principal role of lactococci in dairy fermentations involves the metabolism of lactose to lactic acid and the conversion of . Lactococcus lactis subsp. lactis isolated from fermented milk products and its antimicrobial potential Ali Akbar a,b, Muhammad Bilal Sadiq b,c, Imran Alid, Muhammad Anward, Niaz Muhammade, Javed Muhammadf, Muhammad Shafeeg, Sami Ullahh, Zareen Guli, Said Qasimj, Shaikh Ahmadd and Anil Kumar Anal b aDepartment of Microbiology, University of Balochistan, Quetta, Pakistan; bFood . The completion of whole genome sequence of Lactococcus lactis strain IL will become a major and important step toward opening new possibilities for the development of unused or unknown genes.