Dientamoeba fragilis

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Classification

Higher order taxa

Kingdom Excavata, Subkingdom Metamonada, Phylum Parabasalia, Class Tritrichomonadidae, Order Trichomonadida, Family Dientamoebidae

2. Description and significance

Describe the appearance, habitat, etc. of the organism, and why you think it is important.

• Include as many headings as are relevant to your microbe. Consider using the headings below, as they will allow readers to quickly locate specific information of major interest*

3. 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?

4. Cell structure

Interesting features of cell structure. Can be combined with “metabolic processes”

5. Metabolic processes

Describe important sources of energy, electrons, and carbon (i.e. trophy) for the organism/organisms you are focusing on, as well as important molecules it/they synthesize(s).

6. Ecology

D. fragilis is often regarded as a human parasite which causes abnormal gastrointestinal symptoms such as abdominal pain and diarrhea(8). It is commonly found in human bile and feces, which suggests that it thrives in small and large intestines, as well as the gallbladder(9). D. fragilis is anaerobic bacteria; therefore, it is very sensitive to aerobic environment(8). It may not survive and reproduce after it leaves the host body, so it nearly does not exist in the outside environment. Besides, similar to many other kinds of microbes, D. fragilis does not thrive alone: it is likely to build a dependent relationship with Entamoeba histolytica(8).

7. Pathology

How does this organism cause disease? Human, animal, plant hosts? Virulence factors, as well as patient symptoms.

8. Current Research

Include information about how this microbe (or related microbes) are currently being studied and for what purpose

9. References

It is required that you add at least five primary research articles (in same format as the sample reference below) that corresponds to the info that you added to this page. [Sample reference] Faller, A., and Schleifer, K. "Modified Oxidase and Benzidine Tests for Separation of Staphylococci from Micrococci". Journal of Clinical Microbiology. 1981. Volume 13. p. 1031-1035.