Mesoplasma florum L1
| Names | Mesoplasma florum L1 |
|---|---|
| Accession numbers | NC_006055 |
| Background | Mycoplasmas are members of the class Mollicutes, a large group of bacteria that lack a cell wall and have a characteristically low G+C content (Razin et al. 1998). These diverse organisms are parasites in a wide range of hosts, including humans, animals, insects, plants, and cells grown in tissue culture (Razin et al. 1998). Aside from their role as potential pathogens, Mycoplasmas are of interest because of their remarkable evolution:1. Extremely small genome sizeMycoplasmas evolved from Gram-positive eubacteria by multiple reductions in genome size, resulting in the loss of many biosynthetic abilities and the need to acquire many nutrients from their hosts. With genome sizes smaller than 1 Mb, they have been described as the smallest self-replicating organisms, and are considered to be the best representatives for the concept of a minimal cell (Mushegian and Koonin 1996).2. Unusual genetic codeThe usual genetic code has been altered: In Mycoplasmas, the codon UGA (= stop codon in the standard genetic code) is translated as tryptophan.3. Fast evolutionMycoplasmas have high mutation rates, and lack part of the SOS response as well as a considerable number of the DNA repair proteins that exist in E. coli and B. subtilis. This allows rapid adaptation to sudden environmental changes and to host defense mechanisms.(From http://www.broad.mit.edu/annotation/microbes/mesoplasma_florum/background.html) (BacMap) |
| Taxonomy | |
| Kingdom: | Bacteria |
| Phylum: | Tenericutes |
| Class: | Mollicutes |
| Order: | Entomoplasmatales |
| Family: | Entomoplasmataceae |
| Genus: | Mesoplasma |
| Species: | florum |
| Strain | L1 |
| Complete | Yes |
| Sequencing centre | (07-JUN-2004) Broad Institute, 320 Charles Street, Cambridge, MA 02141, USA (07-JUN-2004) CSAI Lab, Massachusetts Institute of Technology, NE43-818 200 Technology Square, Cambridge, MA 02141, (19-JUL-2004) National Center for Biotechnology Information, NIH, Bethesda, MD 20894, USA |
| Sequencing quality | Level 6: Finished |
| Sequencing depth | NA |
| Sequencing method | NA |
| Isolation site | "lemon flower, Citrus limon" |
| Isolation country | USA |
| Number of replicons | 1 |
| Gram staining properties | Negative |
| Shape | Cocci |
| Mobility | No |
| Flagellar presence | No |
| Number of membranes | NA |
| Oxygen requirements | Facultative |
| Optimal temperature | 20.0 |
| Temperature range | Mesophilic |
| Habitat | HostAssociated |
| Biotic relationship | Free living |
| Host name | NA |
| Cell arrangement | NA |
| Sporulation | Nonsporulating |
| Metabolism | NA |
| Energy source | NA |
| Diseases | NA |
| Pathogenicity | No |