Bacteria Lactobacillus plantarum

Mariganese-containing catalases have been isolated from three species of bacteria Lactobacillus plantarum [27], Thermus ihemtophUus [28], and Thermoleophilum album [18]. X-ray crystallographic structure analysis [29] has shown that these catalases contain a dinudear manganese core. During catalysis, the dinudear manganese active site cydes between the Mn"- and Mn2"oxidation states [30]. 

Superoxide dismutases of some microorganisms (such as Escherichia coli) and some animals contain Mn " /Mn + ions instead of copper and zinc ions as the cofactor (see Section 3.8.1.13.2). Catalases of some microorganisms (e.g. the bacteria Lactobacillus plantarum) contain manganese instead of haem iron. 

The bacterium Lactobacillus plantarum and its closest allies are unusual in that they are aerobic organisms but do not produce a superoxide dismutase. This bacterium instead accumulates Mn(II) to an intramolecular level on the order of 25 mM (150-152). In vitro studies indicated that Mn(II) formed a complex with lactate which possessed significant superoxide activity (153). These bacteria are additionally unable to produce heme and, consequently, when grown in the absence of heme, produce a hemeless catalase, or pseudocatalase (154-158). Unlike heme-containing catalases, the enzyme is not inhibited by cyanide or azide, and the addition of either Mn or Fe into the growth medium increased the amount of the pseudocatalase present. However, neither of the metals could be detected in partially purified enzyme assays (157). 

Commercial Alcoholic beverages Sauerkraut Pickles Cheeses Lactic acid Various yeasts, molds, and bacteria L, plantarum plus other bacteria L, plantarum plus other bacteria Propionibacteria, molds, and possibly many other microorganisms Two lactobacillus species... 

Most of the work on Mn catalases has focused on the enzymes isolated from Lactobacillus plantarum and Thermus thermophilus. However, numerous putative Mn catalases have been identified from sequence comparisons. Most of these are from stress-tolerant bacteria (heat, salt, pH, etc.) consistent with the suggestion (above) that Mn proteins may be important in stress response. Intrigumgly, at least three putative Mn catalases are found in pathogenic organisms E. coli 0157 H7, Salmonella typhimurium, and Bacillus anthracis. 

Lb. reuteri is a member of the consortium of bacteria involved in kefir production (Heller, 2001). Amongst 58 strains of Lactobacillus species isolated from kefir, approximately 19% of the isolates showed the ability to bind to Caco-2 cells by competitive binding with Salmonella typhimurium (Santos, San Mauro, Sanchez, Torres, Marquina, 2003). This area still remains unexplored for determining whether EPS, known to be secreted by some of these strains, is indeed the causative agent Lactobacillus plantarum is not often associated with fermented dairy products, but it has been isolated as one of the major species from a traditional milk of the Maasai (Mathara et al., 2008) Lb. plantarum (strain LP6) was determined to bind to rat intestinal mucus... 

Ruiz-Barba, J. L., Caballero-Guerrero, B., Maldonado-Barragan, A., Jimenez-Diaz, R. (2010). Coculture with specific bacteria enhances survival of Lactobacillus plantarum NC8, an autoinducer-regulated bacteriocin producer, in olive fermentations. Food Microbiology, 27, 413-417. 

Lonvaud-Funel, A., Joyeux, A. (1993). Antagonism between lactic acid bacteria of wines inhibition of Leuconostoc oenos by Lactobacillus plantarum and Pediococcus pentosa-ceus. Food Microbiology, 10, 411-419. 

Lactic acid bacteria. The number of species within lactic acid bacteria used for sausage fermentation is modest. According to Hammes et al. (1985) the following five species can be found in starter culture preparations Lactobacillus plantarum, Lactobacillus sake, Lactobacillus curvatus, Pediococcus pentosaceus and Pediococcus acidilactici. In addition, Lactobacillus pentosus is also used. 

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