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Topic: Firmicutes


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  The Firmicutes
Approximately 2475 species in 255 genera, 40% of these species are aggregated in just 6 genera; Lactobacillus - 100 sp., Mycoplasma - 110 sp., Bacillus - 114 sp, Clostridium 146 sp and Streptomyces 509.
The Firmicutes are all gram-positive bacteria unlike the Proteobacteria which are gram-negative.
The Firmicutes are further divided according to their GC ratios.
www.earthlife.net /prokaryotes/firmicutes.html   (1678 words)

  
  Firmicutes - Wikipedia, the free encyclopedia
The Firmicutes are a division of bacteria, most of which have Gram-positive stains.
Originally the Firmicutes were taken to include all Gram-positive bacteria, but more recently they tend to be restricted to a core group of related forms, called the low G+C group in contrast to the Actinobacteria.
Many Firmicutes produce endospores, which are resistant to desiccation and can survive extreme conditions.
en.wikipedia.org /wiki/Firmicutes   (238 words)

  
 Firmicutes: Facts and details from Encyclopedia Topic   (Site not responding. Last check: 2007-10-19)
The Firmicutes are a group of bacteria bacterium quick summary:
Originally the Firmicutes were taken to include all Gram-positive bacteria, EHandler: no quick summary.
Listeria monocytogenes is a gram-positive bacterium, in the division firmicutes, named for joseph lister....
www.absoluteastronomy.com /encyclopedia/f/fi/firmicutes.htm   (779 words)

  
 Research Highlights
Twenty seven distinct cultivated strains belong to 15 families within the a-, g- and e-Proteobacteria, Firmicutes, Bacteroidetes, and the Green sulfur bacteria.
Of seven distinct cultivated strains, three belong to each of the Actinobacteria and g-Proteobacteria; the seventh is a Firmicute not isolated from any other lake in this study.
Eighteen phylogenetically distinct strains cultivated from 10 families within the a- and g-Proteobacteria, the Firmicutes and Cyanobacteria.
www.hawaii.edu /microbiology/MO/highlights2.htm   (628 words)

  
 Firmicutes
The Firmicutes are a large and diverse group of Gram positive bacteria equivalent in size and diversity to the Gram negative Proteobacteria.
They are divided primarily into two subgroups based on the G+C content of DNA: (1.) Firmicutes with a High GC Content of DNA and (2.) Firmicutes with a Low GC Content of DNA.
The Firmicutes comprise the large group of Bacteria with a Gram-positive type of cell wall.
www.bact.wisc.edu /Bact303/Firmicutes   (237 words)

  
 Obesity alters gut microbial ecology -- Ley et al. 102 (31): 11070 -- Proceedings of the National Academy of Sciences
Dominance of the Firmicutes and Bacteroidetes in the Distal
abundance of Firmicutes (71.2%) and Bacteroidetes (26.1%) was
Firmicutes are in the class Bacillus, which is rare in the human
www.pnas.org /cgi/content/full/102/31/11070   (3390 words)

  
 Learn more about Firmicutes in the online encyclopedia.   (Site not responding. Last check: 2007-10-19)
Learn more about Firmicutes in the online encyclopedia.
Hint: Play with putting spaces before and after your words to see the different results you get.
A few, called mycoplasmas, lack cell walls altogether and so do not respond to Gram staining, but still lack the second membrane found in other Gram-negative forms.
www.onlineencyclopedia.org /f/fi/firmicutes.html   (206 words)

  
 Encyclopedia article on Bacterium [EncycloZine]   (Site not responding. Last check: 2007-10-19)
Firmicutes - bacteria with a single membrane and thick peptidoglycan wall, giving them Gram-positive stains
Most gram-positive bacteria are placed in the phyla Firmicutes and Actinobacteria, which are closely related.
However, the Firmicutes have been redefined to include the mycoplasmas (Mollicutes) and certain Gram-negative bacteria.
encyclozine.com /Bacteria   (2118 words)

  
 CcpA-Dependent Carbon Catabolite Repression in Bacteria -- Warner and Lolkema 67 (4): 475 -- Microbiology and Molecular ...
The tree containing a subset of 38 typical HPr-like sequences was constructed as described in the legend to Fig.
Crh molecules are all found in the Firmicutes (Table 2).
in the Ntr cluster and Crh cluster of the Firmicutes.
mmbr.asm.org /cgi/content/full/67/4/475   (7425 words)

  
 La maladie de Crohn
Parmi les catégories bactériennes observées classiquement dans la flore intestinale, il est apparu que l’une d’elles, les Firmicutes, présentait chez les patients 3 fois moins d’espèces bactériennes différentes que chez les sujets sains.
Une analyse plus poussée des groupes bactériens dominants chez les 12 donneurs de l’étude a confirmé une réduction significative de la proportion de Firmicutes (appartenant plus précisément au groupe Clostridium leptum) chez les sujets malades.
Cette approche métagénomique appliquée à la caractérisation de la flore fécale a donc révélé chez les sujets malades une réduction de complexité et de populations de bactéries du phylum des Firmicutes comme signature de la maladie de Crohn.
lasante.net /crohn   (799 words)

  
 Detection of Horizontal Gene Transfer in rumen ciliates
These sequences were aligned against 149 complete proteomes, and we selected the sequences having firmicutes (low GC Gram+ Bacteria) as "best hit".
Because among the "best hit", firmicutes was the most dominant bacterial taxon : in the 40 organismes that are found more often as Best Hit, stand 12 firmicutes against 10 others bacteria (proteobacteria, fusobacteria,..).
We selected the longest sequences for each cluster and we performed a phylogenetic analysis for the sequences having at least 3 orthologous sequences (122 sequences).
www.iscb.org /ismb2004/posters/G.RicardATcmbi.kun.nl_386.html   (640 words)

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