(Below N is a link to NCBI taxonomic web page and E link to ESTHER at designed phylum.) > cellular organisms: NE > Bacteria: NE > Terrabacteria group: NE > Firmicutes: NE > Bacilli: NE > Lactobacillales: NE > Streptococcaceae: NE > Lactococcus: NE > Lactococcus lactis: NE > Lactococcus lactis subsp. lactis: NE
LegendThis sequence has been compared to family alignement (MSA) red => minority aminoacid blue => majority aminoacid color intensity => conservation rate title => sequence position(MSA position)aminoacid rate Catalytic site Catalytic site in the MSA MTKINNWQDYQGSSLKPEDFDKFWDEKINLVSNHQFEFELIEKNLSSKVV NFYHLWFTAIDGAKIHAQLIVPKNLKEKYPAILQFHGYHCDSGDWVDKIG IVAEGNVVLALDCRGQGGLSQDNIQTMGMTMKGLIVRGIDEGYENLYYVR QFMDLITATKILSEFDFVDETNISAQGASQGGALAVACAALSPLIKKVTA TYPFLSDYRKAYELGAEESAFEELPYWFQFKDPLHLREDWFFNQLEYIDI QNLAPRIKAEVIWILGGKDTVVPPITQMAAYNKIQSKKSLYVLPEYGHEY LPKISDWLRENQ
Lactococcus lactis is a primary constituent of many starter cultures used for the manufacturing of fermented dairy products, but the species also occurs in various nondairy niches such as (fermented) plant material. Three genome sequences of L. lactis dairy strains (IL-1403, SK11, and MG1363) are publicly available. An extensive molecular and phenotypic diversity analysis was now performed on two L. lactis plant isolates. Diagnostic sequencing of their genomes resulted in over 2.5 Mb of sequence for each strain. A high synteny was found with the genome of L. lactis IL-1403, which was used as a template for contig mapping and locating deletions and insertions in the plant L. lactis genomes. Numerous genes were identified that do not have homologs in the published genome sequences of dairy L. lactis strains. Adaptation to growth on substrates derived from plant cell walls is evident from the presence of gene sets for the degradation of complex plant polymers such as xylan, arabinan, glucans, and fructans but also for the uptake and conversion of typical plant cell wall degradation products such as alpha-galactosides, beta-glucosides, arabinose, xylose, galacturonate, glucuronate, and gluconate. Further niche-specific differences are found in genes for defense (nisin biosynthesis), stress response (nonribosomal peptide synthesis and various transporters), and exopolysaccharide biosynthesis, as well as the expected differences in various mobile elements such as prophages, plasmids, restriction-modification systems, and insertion sequence elements. Many of these genes were identified for the first time in Lactococcus lactis. In most cases good correspondence was found with the phenotypic characteristics of these two strains.
Lactococcus lactis subsp. lactis (strain KF147) Acetylxylan esterase
