Mycoplasma pirum

Mycoplasma pirum is a species of bacteria in the genus Mycoplasma. This genus of bacteria lacks a cell wall around their cell membrane.^[1] Without a cell wall, they are unaffected by many common antibiotics such as penicillin or other beta-lactam antibiotics that target cell wall synthesis. Mycoplasma are the smallest bacterial cells yet discovered,^[2] can survive without oxygen and are typically about 0.1  μm in diameter.

Mycoplasma pirum
Scientific classification
Domain:	Bacteria
Phylum:	Mycoplasmatota
Class:	Mollicutes
Order:	Mycoplasmatales
Family:	Mycoplasmataceae
Genus:	Mycoplasma
Species:	M. pirum
Binomial name
Mycoplasma pirum Del Giudice et al. 1985

It has been isolated from those who immune systems are compromised.^[3] It has been isolated from those being treated for HIV infection.^[4] The type strain is HRC 70-159 = ATCC 25960 = NCTC 11702.^[5] Its natural host is unknown.^[6]

References

1. Ryan, Kenneth J.; Ray, C. George; Sherris, John C., eds. (2004). Sherris medical microbiology: an introduction to infectious diseases (4th ed.). New York: McGraw-Hill. pp. 409–12. ISBN 978-0-8385-8529-0.
2. Richard L. Sweet; Ronald S. Gibbs (1990). Infectious Diseases of the Female Genital Tract. Lippincott Williams & Wilkins, 2009. ISBN 9780683080391.
3. Pitcher, D. G. (2005). "Mycoplasma amphoriforme sp. nov., isolated from a patient with chronic bronchopneumonia". International Journal of Systematic and Evolutionary Microbiology. 55 (6): 2589–2594. doi:10.1099/ijs.0.63269-0. ISSN 1466-5026. PMID 16280532.
4. Berger, Stephen (2014). GIDEON guide to medically important bacteria. Los Angeles, California: GIDEON Informatics Inc. ISBN 9781617558412.
5. Parte, A. C. "Mycoplasma". LPSN, LPSN. Retrieved 2015-04-20.
6. Blanchard, Alain (2005). Mycoplasmas : molecular biology, pathogenicity and strategies for control. Wymondham: Horizon Bioscience. ISBN 978-0849398612.