PRF1
Identifiers
AliasesPRF1, FLH2, HPLH2, P1, PFN1, PFP, perforin 1
External IDsOMIM: 170280 MGI: 97551 HomoloGene: 3698 GeneCards: PRF1
Orthologs
SpeciesHumanMouse
Entrez

5551

18646

Ensembl

ENSG00000180644

ENSMUSG00000037202

UniProt

P14222

P10820

RefSeq (mRNA)

NM_005041
NM_001083116

NM_011073

RefSeq (protein)

NP_001076585
NP_005032

NP_035203

Location (UCSC)Chr 10: 70.6 – 70.6 MbChr 10: 61.13 – 61.14 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse

Perforin-1 is a protein that in humans is encoded by the PRF1 gene and the Prf1 gene in mice.[5][6][7]

Function

Perforin is a pore forming cytolytic protein found in the granules of cytotoxic T lymphocytes (CTLs) and natural killer cells (NK cells). Upon degranulation, perforin molecules translocate to the target cell with the help of calreticulin, which works as a chaperone protein to prevent perforin from degrading. Perforin then binds to the target cell's plasma membrane via membrane phospholipids while phosphatidylcholine binds calcium ions to increase perforin's affinity to the membrane.[8] Perforin oligomerises in a Ca2+ dependent manner to form pores on the target cell. The pore formed allows for the passive diffusion of a family of pro-apoptotic proteases, known as the granzymes, into the target cell.[9] The lytic membrane-inserting part of perforin is the MACPF domain.[10] This region shares homology with cholesterol-dependent cytolysins from Gram-positive bacteria.[11]

Perforin has structural and functional similarities to complement component 9 (C9). Like C9, this protein creates transmembrane tubules and is capable of lysing non-specifically a variety of target cells. This protein is one of the main cytolytic proteins of cytolytic granules, and it is known to be a key effector molecule for T-cell- and natural killer-cell-mediated cytolysis.[7] Perforin is thought to act by creating holes in the plasma membrane which triggers an influx of calcium and initiates membrane repair mechanisms. These repair mechanisms bring perforin and granzymes into early endosomes.[12]

Clinical significance

Homozygous inheritance of defective PRF1 alleles result in the development of familial hemophagocytic lymphohistiocytosis type 2 (FHL2), a rare and lethal autosomal recessive disorder of infancy.[7]

Interactions

Perforin has been shown to interact with calreticulin.[13]

See also

References

  1. 1 2 3 GRCh38: Ensembl release 89: ENSG00000180644 - Ensembl, May 2017
  2. 1 2 3 GRCm38: Ensembl release 89: ENSMUSG00000037202 - 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. ↑ Fink TM, Zimmer M, Weitz S, Tschopp J, Jenne DE, Lichter P (Sep 1992). "Human perforin (PRF1) maps to 10q22, a region that is syntenic with mouse chromosome 10". Genomics. 13 (4): 1300–2. doi:10.1016/0888-7543(92)90050-3. PMID 1505959.
  6. ↑ Shinkai Y, Yoshida MC, Maeda K, Kobata T, Maruyama K, Yodoi J, Yagita H, Okumura K (Jan 1990). "Molecular cloning and chromosomal assignment of a human perforin (PFP) gene". Immunogenetics. 30 (6): 452–7. doi:10.1007/BF02421177. PMID 2592021. S2CID 35292868.
  7. 1 2 3 "Entrez Gene: PRF1 perforin 1 (pore forming protein)".
  8. ↑ Osińska, Iwona et al. “Perforin: an important player in immune response.” Central-European journal of immunology vol. 39,1 (2014): 109-15. doi:10.5114/ceji.2014.42135
  9. ↑ Trapani JA (1996). "Target cell apoptosis induced by cytotoxic T cells and natural killer cells involves synergy between the pore-forming protein, perforin, and the serine protease, granzyme B". Australian and New Zealand Journal of Medicine. 25 (6): 793–9. doi:10.1111/j.1445-5994.1995.tb02883.x. PMID 8770355.
  10. ↑ Tschopp J; Masson D; Stanley KK (1986). "Structural/functional similarity between proteins involved in complement- and cytotoxic T-lymphocyte-mediated cytolysis". Nature. 322 (6082): 831–4. Bibcode:1986Natur.322..831T. doi:10.1038/322831a0. PMID 2427956. S2CID 4330219.
  11. ↑ Rosado CJ, Buckle AM, Law RH, Butcher RE, Kan WT, Bird CH, Ung K, Browne KA, Baran K, Bashtannyk-Puhalovich TA, Faux NG, Wong W, Porter CJ, Pike RN, Ellisdon AM, Pearce MC, Bottomley SP, Emsley J, Smith AI, Rossjohn J, Hartland EL, Voskoboinik I, Trapani JA, Bird PI, Dunstone MA, Whisstock JC (2007). "A common fold mediates vertebrate defense and bacterial attack". Science. 317 (5844): 1548–51. Bibcode:2007Sci...317.1548R. doi:10.1126/science.1144706. PMID 17717151. S2CID 20372720.
  12. ↑ Thiery J, Keefe D, Boulant S, Boucrot E, Walch M, Martinvalet D, Goping IS, Bleackley RC, Kirchhausen T, Lieberman J (2011). "Perforin pores in the endosomal membrane trigger the release of endocytosed granzyme B into the cytosol of target cells". Nat. Immunol. 12 (8): 770–7. doi:10.1038/ni.2050. PMC 3140544. PMID 21685908.
  13. ↑ Andrin C, Pinkoski MJ, Burns K, et al. (July 1998). "Interaction between a Ca2+-binding protein calreticulin and perforin, a component of the cytotoxic T-cell granules". Biochemistry. 37 (29): 10386–94. doi:10.1021/bi980595z. PMID 9671507.

Further reading

Perforin-1 at NLM Genetics Home Reference

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