Actinomyces israelii NEUF2011: Difference between revisions
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The cell surface of Actinomyces israelii is covered with a thick and fuzzy coat. The hairy structure comes out from fuzzy other coat, and it surrounds entire surface of bacterial cell wall evenly. The Presence of hairy structures in a fuzzy outer coat shows that some strains of Actinomyces israelii are capable to generate fimbriae. | The cell surface of Actinomyces israelii is covered with a thick and fuzzy coat. The hairy structure comes out from fuzzy other coat, and it surrounds entire surface of bacterial cell wall evenly. The Presence of hairy structures in a fuzzy outer coat shows that some strains of Actinomyces israelii are capable to generate fimbriae. | ||
Figdor, David, and John Davies. "Cell surface structures of Actinomyces | |||
israelii." Australian Dental Journal 42:(2) (1997): 125-128. PDF file. | |||
==Ecology== | ==Ecology== | ||
Revision as of 03:23, 7 October 2011
A Microbial Biorealm page on the genus Actinomyces israelii NEUF2011
Classification
Higher order taxa
Superkingdom: Bacteria Phylum: Actinobacteria Class: Actinobacteria Order: Actinomycetales Family: Actinomycetaceae Genus: Actinomyces
Use NCBI link to find]
Species
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NCBI: Taxonomy |
Species: A. israelii
Description and significance
Actinomyces israelii is a filamentous anaerobic bacteria that is gram positive, non-spore forming, and non-acid-fast1. It is an organism typically found in the soil and in decaying organic matter including wet hay and straw, but is can also be found in oral cavities, dental plaques2 and the intestinal tract of mammals. Although Actinomyces israelii is not normally a disease causing organism, it is the primary causative agent of Actinomycosis, a long term infection that commonly affects the face and neck3. Actinomyces israelii is sensitive to penicillin, ampicillin, tetracyclines, chloramphenicol, clindamycin, and selected aminoglycosides1.
1 "Actinomyces Israelii | Humen Health." Humen Health Diseases. Web. 04 Oct. 2011. <http://www.humenhealth.com/actinomyces-israelii>
2 Roque, Manolette R. "Actinomycosis in Opthalmology." Medscape Reference. Web. 4 Oct. 2011. <http://emedicine.medscape.com/article/1203061-overview#a0101>
3 "Actinomycosis - PubMed Health." PubMed Health. Ed. David C. Dugdale. 1 Dec. 2009. Web. 04 Oct. 2011. <http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0001625/>
Genome structure
Describe the size and content of the genome. How many chromosomes? Circular or linear? Other interesting features? What is known about its sequence?
The 16S ribosomal RNA sequence in Actinomyces bacteria is used to differentiate between more and less closely related species within the genus. Most literature about Actinomyces israelii currently discusses this sequence as significant, with little discussion about other gene sequences.
CLINICAL MICROBIOLOGY REVIEWS, Oct. 2004, p. 840–862 Vol. 17, No. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC523561/pdf/0041-04.pdf
Cell structure and metabolism
Interesting features of cell structure; how it gains energy; what important molecules it produces.
The cell surface of Actinomyces israelii is covered with a thick and fuzzy coat. The hairy structure comes out from fuzzy other coat, and it surrounds entire surface of bacterial cell wall evenly. The Presence of hairy structures in a fuzzy outer coat shows that some strains of Actinomyces israelii are capable to generate fimbriae.
Figdor, David, and John Davies. "Cell surface structures of Actinomyces
israelii." Australian Dental Journal 42:(2) (1997): 125-128. PDF file.
Ecology
Habitat; symbiosis; contributions to the environment.
Pathology
How does this organism cause disease? Human, animal, plant hosts? Virulence factors, as well as patient symptoms.
Current Research
Enter summaries of the most recent research here--at least three required
Cool Factor
Describe something you fing "cool" about this microbe.
References
Edited by student of Iris Keren
