Encephalitozoon intestinalis

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Encephalitozoon intestinalis
Scientific classification
Kingdom: Fungi
Phylum: Microsporidia
Family: Unikaryonidae
Genus: Encephalitozoon
Species: E. intestinalis
Binomial name
Encephalitozoon intestinalis
(A.Cali, D.P.Kotler & J.M.Orenstein) anon.

Encephalitozoon intestinalis is a parasite.[1] It can cause microsporidiosis.[2]

It is notable as having one of the smallest genome among known eukaryotic organisms, containing only 2.25 million base pairs.[3] Its genome was completely sequenced in 2010.[4]


  1. ^ Dowd SE, Gerba CP, Pepper IL (1998). "Confirmation of the Human-Pathogenic Microsporidia Enterocytozoon bieneusi, Encephalitozoon intestinalis, and Vittaforma corneae in Water". Applied and Environmental Microbiology 64 (9): 3332–5. PMC 106729. PMID 9726879. 
  2. ^ Lanternier F, Boutboul D, Menotti J, et al. (2009). "Microsporidiosis in solid organ transplant recipients: two Enterocytozoon bieneusi cases and review". Transpl Infect Dis 11 (1): 83–8. doi:10.1111/j.1399-3062.2008.00347.x. PMID 18803616. 
  3. ^ http://news.sciencemag.org/sciencenow/2010/10/scienceshot-biggest-genome-ever.html
  4. ^ Corradi N, Pombert JF, Farinelli L, Didier ES, Keeling PJ (2010). "The complete sequence of the smallest known nuclear genome from the microsporidian Encephalitozoon intestinalis". Nature Communications 1 (6): 77. doi:10.1038/ncomms1082. PMID 20865802.