Reviewed February 2009
What is the official name of the ERAP1 gene?
The official name of this gene is “endoplasmic reticulum aminopeptidase 1.”
ERAP1 is the gene's official symbol. The ERAP1 gene is also known by other names, listed below.
What is the normal function of the ERAP1 gene?
The ERAP1 gene (also known as ERAAP and ARTS1) provides instructions for making a protein called endoplasmic reticulum aminopeptidase 1. As its name suggests, this protein is active in a cellular structure called the endoplasmic reticulum, which is involved in protein processing and transport. This protein is an aminopeptidase, which is an enzyme that cuts (cleaves) other proteins into smaller fragments called peptides.
Endoplasmic reticulum aminopeptidase 1 has two major functions, both of which are important for normal immune system function. First, endoplasmic reticulum aminopeptidase 1 cleaves several proteins called cytokine receptors on the surface of cells. Cleaving these receptors reduces their ability to transmit chemical signals into the cell, which affects the process of inflammation.
Second, endoplasmic reticulum aminopeptidase 1 cleaves many types of proteins into small peptides that can be recognized by the immune system. These peptides are exported to the cell surface, where they attach to major histocompatibility complex (MHC) class I proteins. MHC class I proteins display the peptides to the immune system. If the immune system recognizes the peptides as foreign (such as viral or bacterial peptides), it responds by triggering the infected cell to self-destruct.
How are changes in the ERAP1 gene related to health conditions?
- ankylosing spondylitis - associated with the ERAP1 gene
Several variations (polymorphisms) in the ERAP1 gene have been found to influence the risk of ankylosing spondylitis. Each of these variations changes a single protein building block (amino acid) in endoplasmic reticulum aminopeptidase 1. Little is known about the effects of these variations, although researchers believe that changes in the protein's structure could alter either of its two major functions. It is unclear how these changes contribute to a person's risk of ankylosing spondylitis. Other genetic and environmental factors, many of which are unknown, also affect the chance of developing this condition.
Where is the ERAP1 gene located?
Cytogenetic Location: 5q15
Molecular Location on chromosome 5: base pairs 96,096,513 to 96,149,847
The ERAP1 gene is located on the long (q) arm of chromosome 5 at position 15.
More precisely, the ERAP1 gene is located from base pair 96,096,513 to base pair 96,149,847 on chromosome 5.
See How do geneticists indicate the location of a gene? (http://ghr.nlm.nih.gov/handbook/howgeneswork/genelocation) in the Handbook.
Where can I find additional information about ERAP1?
You and your healthcare professional may find the following resources about ERAP1 helpful.
You may also be interested in these resources, which are designed for genetics professionals and researchers.
- PubMed - Recent literature (http://www.ncbi.nlm.nih.gov/pubmed?term=((ERAP1%5BTIAB%5D)%20OR%20(endoplasmic%20reticulum%20aminopeptidase%201%5BTIAB%5D))%20OR%20((ARTS-1%5BTIAB%5D)%20OR%20(ARTS1%5BTIAB%5D)%20OR%20(ERAAP%5BTIAB%5D)%20OR%20(PILS-AP%5BTIAB%5D))%20AND%20((Genes%5BMH%5D)%20OR%20(Genetic%20Phenomena%5BMH%5D))%20AND%20english%5Bla%5D%20AND%20human%5Bmh%5D%20AND%20%22last%203600%20days%22%5Bdp%5D)
- OMIM - Genetic disorder catalog (http://omim.org/entry/606832)
Research Resources - Tools for researchers
- Atlas of Genetics and Cytogenetics in Oncology and Haematology (http://atlasgeneticsoncology.org/Genes/GC_ERAP1.html)
- GeneCards (http://www.genecards.org/cgi-bin/carddisp.pl?id_type=entrezgene&id=51752)
- HUGO Gene Nomenclature Committee (http://www.genenames.org/data/hgnc_data.php?hgnc_id=18173)
- NCBI Gene (http://www.ncbi.nlm.nih.gov/gene/51752)
What other names do people use for the ERAP1 gene or gene products?
- adipocyte-derived leucine aminopeptidase
- aminopeptidase PILS
- aminopeptidase regulator of TNFR1 shedding
- puromycin-insensitive leucyl-specific aminopeptidase
- type 1 tumor necrosis factor receptor shedding aminopeptidase regulator
See How are genetic conditions and genes named? (http://ghr.nlm.nih.gov/handbook/mutationsanddisorders/naming) in the Handbook.
What glossary definitions help with understanding ERAP1?
amino acid ;
endoplasmic reticulum ;
immune system ;
You may find definitions for these and many other terms in the Genetics Home Reference
- Brionez TF, Reveille JD. The contribution of genes outside the major histocompatibility complex to susceptibility to ankylosing spondylitis. Curr Opin Rheumatol. 2008 Jul;20(4):384-91. doi: 10.1097/BOR.0b013e32830460fe. Review. (http://www.ncbi.nlm.nih.gov/pubmed/18525349?dopt=Abstract)
- Brown MA. Breakthroughs in genetic studies of ankylosing spondylitis. Rheumatology (Oxford). 2008 Feb;47(2):132-7. Epub 2007 Nov 22. Review. (http://www.ncbi.nlm.nih.gov/pubmed/18037607?dopt=Abstract)
- Chang SC, Momburg F, Bhutani N, Goldberg AL. The ER aminopeptidase, ERAP1, trims precursors to lengths of MHC class I peptides by a "molecular ruler" mechanism. Proc Natl Acad Sci U S A. 2005 Nov 22;102(47):17107-12. Epub 2005 Nov 14. (http://www.ncbi.nlm.nih.gov/pubmed/16286653?dopt=Abstract)
- Hammer GE, Gonzalez F, Champsaur M, Cado D, Shastri N. The aminopeptidase ERAAP shapes the peptide repertoire displayed by major histocompatibility complex class I molecules. Nat Immunol. 2006 Jan;7(1):103-12. Epub 2005 Nov 20. (http://www.ncbi.nlm.nih.gov/pubmed/16299505?dopt=Abstract)
- NCBI Gene (http://www.ncbi.nlm.nih.gov/gene/51752)
- Saric T, Chang SC, Hattori A, York IA, Markant S, Rock KL, Tsujimoto M, Goldberg AL. An IFN-gamma-induced aminopeptidase in the ER, ERAP1, trims precursors to MHC class I-presented peptides. Nat Immunol. 2002 Dec;3(12):1169-76. Epub 2002 Nov 18. (http://www.ncbi.nlm.nih.gov/pubmed/12436109?dopt=Abstract)
- Wellcome Trust Case Control Consortium; Australo-Anglo-American Spondylitis Consortium (TASC), Burton PR, Clayton DG, Cardon LR, Craddock N, Deloukas P, Duncanson A, Kwiatkowski DP, McCarthy MI, Ouwehand WH, Samani NJ, Todd JA, Donnelly P, Barrett JC, Davison D, Easton D, Evans DM, Leung HT, Marchini JL, Morris AP, Spencer CC, Tobin MD, Attwood AP, Boorman JP, Cant B, Everson U, Hussey JM, Jolley JD, Knight AS, Koch K, Meech E, Nutland S, Prowse CV, Stevens HE, Taylor NC, Walters GR, Walker NM, Watkins NA, Winzer T, Jones RW, McArdle WL, Ring SM, Strachan DP, Pembrey M, Breen G, St Clair D, Caesar S, Gordon-Smith K, Jones L, Fraser C, Green EK, Grozeva D, Hamshere ML, Holmans PA, Jones IR, Kirov G, Moskivina V, Nikolov I, O'Donovan MC, Owen MJ, Collier DA, Elkin A, Farmer A, Williamson R, McGuffin P, Young AH, Ferrier IN, Ball SG, Balmforth AJ, Barrett JH, Bishop TD, Iles MM, Maqbool A, Yuldasheva N, Hall AS, Braund PS, Dixon RJ, Mangino M, Stevens S, Thompson JR, Bredin F, Tremelling M, Parkes M, Drummond H, Lees CW, Nimmo ER, Satsangi J, Fisher SA, Forbes A, Lewis CM, Onnie CM, Prescott NJ, Sanderson J, Matthew CG, Barbour J, Mohiuddin MK, Todhunter CE, Mansfield JC, Ahmad T, Cummings FR, Jewell DP, Webster J, Brown MJ, Lathrop MG, Connell J, Dominiczak A, Marcano CA, Burke B, Dobson R, Gungadoo J, Lee KL, Munroe PB, Newhouse SJ, Onipinla A, Wallace C, Xue M, Caulfield M, Farrall M, Barton A; Biologics in RA Genetics and Genomics Study Syndicate (BRAGGS) Steering Committee, Bruce IN, Donovan H, Eyre S, Gilbert PD, Hilder SL, Hinks AM, John SL, Potter C, Silman AJ, Symmons DP, Thomson W, Worthington J, Dunger DB, Widmer B, Frayling TM, Freathy RM, Lango H, Perry JR, Shields BM, Weedon MN, Hattersley AT, Hitman GA, Walker M, Elliott KS, Groves CJ, Lindgren CM, Rayner NW, Timpson NJ, Zeggini E, Newport M, Sirugo G, Lyons E, Vannberg F, Hill AV, Bradbury LA, Farrar C, Pointon JJ, Wordsworth P, Brown MA, Franklyn JA, Heward JM, Simmonds MJ, Gough SC, Seal S; Breast Cancer Susceptibility Collaboration (UK), Stratton MR, Rahman N, Ban M, Goris A, Sawcer SJ, Compston A, Conway D, Jallow M, Newport M, Sirugo G, Rockett KA, Bumpstead SJ, Chaney A, Downes K, Ghori MJ, Gwilliam R, Hunt SE, Inouye M, Keniry A, King E, McGinnis R, Potter S, Ravindrarajah R, Whittaker P, Widden C, Withers D, Cardin NJ, Davison D, Ferreira T, Pereira-Gale J, Hallgrimsdo'ttir IB, Howie BN, Su Z, Teo YY, Vukcevic D, Bentley D, Brown MA, Compston A, Farrall M, Hall AS, Hattersley AT, Hill AV, Parkes M, Pembrey M, Stratton MR, Mitchell SL, Newby PR, Brand OJ, Carr-Smith J, Pearce SH, McGinnis R, Keniry A, Deloukas P, Reveille JD, Zhou X, Sims AM, Dowling A, Taylor J, Doan T, Davis JC, Savage L, Ward MM, Learch TL, Weisman MH, Brown M. Association scan of 14,500 nonsynonymous SNPs in four diseases identifies autoimmunity variants. Nat Genet. 2007 Nov;39(11):1329-37. Epub 2007 Oct 21. (http://www.ncbi.nlm.nih.gov/pubmed/17952073?dopt=Abstract)
- York IA, Brehm MA, Zendzian S, Towne CF, Rock KL. Endoplasmic reticulum aminopeptidase 1 (ERAP1) trims MHC class I-presented peptides in vivo and plays an important role in immunodominance. Proc Natl Acad Sci U S A. 2006 Jun 13;103(24):9202-7. Epub 2006 Jun 5. (http://www.ncbi.nlm.nih.gov/pubmed/16754858?dopt=Abstract)
- York IA, Chang SC, Saric T, Keys JA, Favreau JM, Goldberg AL, Rock KL. The ER aminopeptidase ERAP1 enhances or limits antigen presentation by trimming epitopes to 8-9 residues. Nat Immunol. 2002 Dec;3(12):1177-84. Epub 2002 Nov 18. (http://www.ncbi.nlm.nih.gov/pubmed/12436110?dopt=Abstract)
The resources on this site should not be used as a substitute for
professional medical care or advice. Users seeking information about
a personal genetic disease, syndrome, or condition should consult with a qualified
See How can I find a genetics professional in my area? (http://ghr.nlm.nih.gov/handbook/consult/findingprofessional) in the Handbook.