Lactobacillus rhamnosus

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Revision as of 23:02, 21 April 2009 by imported>Tamara Goodman (→‎Genome structure)
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Lactobacillus rhamnosus GG
Scientific classification
Kingdom: bacteria
Phylum: Firmicutes
Class: Bacilli
Order: Lactobacillales
Family: Lactobacillaceae
Genus: Lactobacillus
Species: L. rhamnosus GG
Binomial name
Lactobacillus rhamnosus GG

Description and significance

Lactobacillus rhamnosus GG (LGG) was isolated in 1983 from a healthy human and was indicated to be a strain of Lactobacillus rhamnosus by Sherwood Gorbach and Barry Goldin. L.rhamnosus GG is a probiotic bacteria known for its beneficial effects on the intestinal tract and can also boost a persons immune system. This helpful bacteria is said to balance the microfauna of the gastrointestinal tract. LGG can stimulate antibody production, enhances phagocytosis( a process in which an immunity cell engulfs foreign invaders), and modifies production of cytokines which are important proteins in the immune response. LGG is also known to decrease the proliferation of carcinogenic elements by other bacteria living in the intestine. In addition, in 2005 LGG was used to treat gastrointestinal carriage of vancomycin-resistant enterococci in patients with kidney problems. L. rhamnosus GG has shown to shorten the rotavirus diarrhoea (Guandalini et. al 2000), relief inflammatory bowel disease (Gupta et. al 2000), and treat and prevent allergies (Kalliomaki et al. 2001b)

Since it has so many positive effects on the human body, it is now available to buy in dairy products or in form of capsules to ingest orally.

Genome structure

The genomic sequence of Lactobacillus rhamnosus GG consists of over three million nucleotides which make up approximatly 3100 genes. Compared to other probiotic bacteria, this genome is quite large, allowing LGG to propogate a greater diversity of qualities which perhaps explains why it can benefit people in a number of different ways.

Cell structure and metabolism

Ecology

Pathology

Application to Biotechnology

Current Research

References