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AliasesIFITM3, 1-8U, DSPA2b, IP15, interferon induced transmembrane protein 3
External IDsOMIM: 605579 MGI: 1913391 HomoloGene: 136199 GeneCards: IFITM3
Gene location (Human)
Chromosome 11 (human)
Chr.Chromosome 11 (human)[1]
Chromosome 11 (human)
Genomic location for IFITM3
Genomic location for IFITM3
Band11p15.5Start319,676 bp[1]
End327,537 bp[1]
RefSeq (mRNA)



RefSeq (protein)



Location (UCSC)Chr 11: 0.32 – 0.33 MbChr 7: 141.01 – 141.01 Mb
PubMed search[3][4]
View/Edit HumanView/Edit Mouse

Interferon-induced transmembrane protein 3 (IFITM3) is a protein that in humans is encoded by the IFITM3 gene.[5][6][7] It plays a critical role in the immune system's defense against Swine Flu, where heightened levels of IFITM3 keep viral levels low, and the removal of IFITM3 allows the virus to multiply unchecked.[8] This observation has been further advanced by a recent study from Paul Kellam's lab that shows that a single nucleotide polymorphism in the human IFITM3 gene purported to increase influenza susceptibility is overrepresented in people hospitalised with pandemic H1N1.[9] The prevalence of this mutation is thought to be approximately 1/400 in European populations.[9][10]

Model organisms[edit]

Model organisms have been used in the study of IFITM3 function. A conditional knockout mouse line, called Ifitm3tm1Masu[15][16] was generated as part of the International Knockout Mouse Consortium program — a high-throughput mutagenesis project to generate and distribute animal models of disease to interested scientists — at the Wellcome Trust Sanger Institute.[17][18][19]

Male and female animals underwent a standardized phenotypic screen to determine the effects of deletion.[13][20] Twenty four tests were carried out on mutant mice, but no significant abnormalities were observed.[13] However, challenge with influenza A virus indicated that these mice display increased viral susceptibility.[9]


  1. ^ a b c GRCh38: Ensembl release 89: ENSG00000142089 - Ensembl, May 2017
  2. ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000025492 - Ensembl, May 2017
  3. ^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. ^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. ^ Lewin AR, Reid LE, McMahon M, Stark GR, Kerr IM (Aug 1991). "Molecular analysis of a human interferon-inducible gene family". Eur J Biochem. 199 (2): 417–423. doi:10.1111/j.1432-1033.1991.tb16139.x. PMID 1906403.
  6. ^ Tanaka SS, Yamaguchi YL, Tsoi B, Lickert H, Tam PP (Dec 2005). "IFITM/Mil/fragilis family proteins IFITM1 and IFITM3 play distinct roles in mouse primordial germ cell homing and repulsion". Dev Cell. 9 (6): 745–756. doi:10.1016/j.devcel.2005.10.010. PMID 16326387.
  7. ^ "Entrez Gene: IFITM3 interferon induced transmembrane protein 3 (1-8U)".
  8. ^ "Natural swine flu defence found".
  9. ^ a b c Everitt A.R.; et al. (March 2012). "IFITM3 restricts the morbidity and mortality associated with influenza". Nature. 484 (7395): 519–23. doi:10.1038/nature10921. PMC 3648786. PMID 22446628.
  10. ^ "Gene flaw linked to serious flu risk".
  11. ^ "Salmonella infection data for Ifitm3". Wellcome Trust Sanger Institute.
  12. ^ "Citrobacter infection data for Ifitm3". Wellcome Trust Sanger Institute.
  13. ^ a b c Gerdin AK (2010). "The Sanger Mouse Genetics Programme: High throughput characterisation of knockout mice". Acta Ophthalmologica. 88 (S248). doi:10.1111/j.1755-3768.2010.4142.x. S2CID 85911512.
  14. ^ Mouse Resources Portal, Wellcome Trust Sanger Institute.
  15. ^ "International Knockout Mouse Consortium".
  16. ^ "Mouse Genome Informatics".
  17. ^ Skarnes, W. C.; Rosen, B.; West, A. P.; Koutsourakis, M.; Bushell, W.; Iyer, V.; Mujica, A. O.; Thomas, M.; Harrow, J.; Cox, T.; Jackson, D.; Severin, J.; Biggs, P.; Fu, J.; Nefedov, M.; De Jong, P. J.; Stewart, A. F.; Bradley, A. (2011). "A conditional knockout resource for the genome-wide study of mouse gene function". Nature. 474 (7351): 337–342. doi:10.1038/nature10163. PMC 3572410. PMID 21677750.
  18. ^ Dolgin E (June 2011). "Mouse library set to be knockout". Nature. 474 (7351): 262–3. doi:10.1038/474262a. PMID 21677718.
  19. ^ Collins FS, Rossant J, Wurst W (January 2007). "A mouse for all reasons". Cell. 128 (1): 9–13. doi:10.1016/j.cell.2006.12.018. PMID 17218247. S2CID 18872015.
  20. ^ van der Weyden L, White JK, Adams DJ, Logan DW (2011). "The mouse genetics toolkit: revealing function and mechanism". Genome Biol. 12 (6): 224. doi:10.1186/gb-2011-12-6-224. PMC 3218837. PMID 21722353.

Further reading[edit]