DEFA4
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Defensin, alpha 4 (DEFA4), also known as neutrophil defensin 4 or HNP4, is a human defensin peptide that is encoded by the DEFA4 gene.[1][2] HNP4 is expressed in the granules of the neutrophil where it defends the host against bacteria[3] and viruses.[4]
Function
Defensins are a peptide family of cytotoxic microbicides involved in innate immunity.[5] Members of the defensin family are distinguished by a conserved six-cysteine motif. Several human alpha defensin genes including HNP4 are clustered on chromosome 8. DEFA4 differs from other defensin genes by an extra 83-base segment that is apparently the result of a recent duplication within the coding region. HNP4 inhibits corticotropin-stimulated corticosterone production.[1]
References
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- ^ a b Page Module:Citation/CS1/styles.css has no content."Entrez Gene: DEFA4; defensin, alpha 4, corticostatin (Homo sapiens)".
- ^ Page Module:Citation/CS1/styles.css has no content.Wu Z, Ericksen B, Tucker K, Lubkowski J, Lu W (September 2004). "Synthesis and characterization of human alpha-defensins 4-6". The Journal of Peptide Research. 64 (3): 118–25. doi:10.1111/j.1399-3011.2004.00179.x. PMID 15317502.
- ^ Page Module:Citation/CS1/styles.css has no content.Ericksen B, Wu Z, Lu W, Lehrer RI (January 2005). "Antibacterial activity and specificity of the six human {alpha}-defensins". Antimicrobial Agents and Chemotherapy. 49 (1): 269–75. doi:10.1128/AAC.49.1.269-275.2005. PMC 538877. PMID 15616305.
- ^ Page Module:Citation/CS1/styles.css has no content.Wu Z, Cocchi F, Gentles D, Ericksen B, Lubkowski J, Devico A, et al. (January 2005). "Human neutrophil alpha-defensin 4 inhibits HIV-1 infection in vitro". FEBS Letters. 579 (1): 162–6. Bibcode:2005FEBSL.579..162W. doi:10.1016/j.febslet.2004.11.062. PMID 15620707. S2CID 84062495.
- ^ Page Module:Citation/CS1/styles.css has no content.Ganz T, Selsted ME, Szklarek D, Harwig SS, Daher K, Bainton DF, Lehrer RI (October 1985). "Defensins. Natural peptide antibiotics of human neutrophils". The Journal of Clinical Investigation. 76 (4): 1427–35. doi:10.1172/JCI112120. PMC 424093. PMID 2997278.
Further reading
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- Page Module:Citation/CS1/styles.css has no content.Szyk A, Wu Z, Tucker K, Yang D, Lu W, Lubkowski J (December 2006). "Crystal structures of human alpha-defensins HNP4, HD5, and HD6". Protein Science. 15 (12): 2749–60. doi:10.1110/ps.062336606. PMC 2242434. PMID 17088326.
- Page Module:Citation/CS1/styles.css has no content.Mallow EB, Harris A, Salzman N, Russell JP, DeBerardinis RJ, Ruchelli E, Bevins CL (February 1996). "Human enteric defensins. Gene structure and developmental expression". The Journal of Biological Chemistry. 271 (8): 4038–45. doi:10.1074/jbc.271.8.4038. PMID 8626737.
- Page Module:Citation/CS1/styles.css has no content.Bevins CL, Jones DE, Dutra A, Schaffzin J, Muenke M (January 1996). "Human enteric defensin genes: chromosomal map position and a model for possible evolutionary relationships". Genomics. 31 (1): 95–106. doi:10.1006/geno.1996.0014. PMID 8808285.
- Page Module:Citation/CS1/styles.css has no content.Gabay JE, Scott RW, Campanelli D, Griffith J, Wilde C, Marra MN, et al. (July 1989). "Antibiotic proteins of human polymorphonuclear leukocytes". Proceedings of the National Academy of Sciences of the United States of America. 86 (14): 5610–4. Bibcode:1989PNAS...86.5610G. doi:10.1073/pnas.86.14.5610. PMC 297672. PMID 2501794.
- Page Module:Citation/CS1/styles.css has no content.Davila S, Froeling FE, Tan A, Bonnard C, Boland GJ, Snippe H, et al. (April 2010). "New genetic associations detected in a host response study to hepatitis B vaccine". Genes and Immunity. 11 (3): 232–8. doi:10.1038/gene.2010.1. PMID 20237496.
- Page Module:Citation/CS1/styles.css has no content.Kim E, Lee JE, Namkung JH, Kim PS, Kim S, Shin ES, et al. (April 2009). "Single nucleotide polymorphisms and the haplotype in the DEFB1 gene are associated with atopic dermatitis in a Korean population". Journal of Dermatological Science. 54 (1): 25–30. doi:10.1016/j.jdermsci.2008.12.005. PMID 19135873.
- Page Module:Citation/CS1/styles.css has no content.Milanese M, Segat L, Arraes LC, Garzino-Demo A, Crovella S (March 2009). "Copy number variation of defensin genes and HIV infection in Brazilian children". Journal of Acquired Immune Deficiency Syndromes. 50 (3): 331–3. doi:10.1097/QAI.0b013e3181945f39. PMID 19194307. S2CID 33161105.
- Page Module:Citation/CS1/styles.css has no content.Palfree RG, Sadro LC, Solomon S (February 1993). "The gene encoding the human corticostatin HP-4 precursor contains a recent 86-base duplication and is located on chromosome 8". Molecular Endocrinology. 7 (2): 199–205. doi:10.1210/mend.7.2.8469233. PMID 8469233. S2CID 13126788.
- Page Module:Citation/CS1/styles.css has no content.Furci L, Sironi F, Tolazzi M, Vassena L, Lusso P (April 2007). "Alpha-defensins block the early steps of HIV-1 infection: interference with the binding of gp120 to CD4". Blood. 109 (7): 2928–35. doi:10.1182/blood-2006-05-024489. PMID 17132727.
- Page Module:Citation/CS1/styles.css has no content.Wilde CG, Griffith JE, Marra MN, Snable JL, Scott RW (July 1989). "Purification and characterization of human neutrophil peptide 4, a novel member of the defensin family". The Journal of Biological Chemistry. 264 (19): 11200–3. doi:10.1016/S0021-9258(18)60449-1. PMID 2500436.
- Page Module:Citation/CS1/styles.css has no content.Singh A, Bateman A, Zhu QZ, Shimasaki S, Esch F, Solomon S (August 1988). "Structure of a novel human granulocyte peptide with anti-ACTH activity". Biochemical and Biophysical Research Communications. 155 (1): 524–9. Bibcode:1988BBRC..155..524S. doi:10.1016/S0006-291X(88)81118-5. PMID 2843187.
- Page Module:Citation/CS1/styles.css has no content.Konishi K, Gibson KF, Lindell KO, Richards TJ, Zhang Y, Dhir R, et al. (July 2009). "Gene expression profiles of acute exacerbations of idiopathic pulmonary fibrosis". American Journal of Respiratory and Critical Care Medicine. 180 (2): 167–75. doi:10.1164/rccm.200810-1596OC. PMC 2714820. PMID 19363140.
- Page Module:Citation/CS1/styles.css has no content.Emonts M, Vermont CL, Houwing-Duistermaat JJ, Haralambous E, Gaast-de Jongh CE, Hazelzet JA, et al. (July 2010). "Polymorphisms in PARP, IL1B, IL4, IL10, C1INH, DEFB1, and DEFA4 in meningococcal disease in three populations". Shock. 34 (1): 17–22. doi:10.1097/SHK.0b013e3181ce2c7d. PMID 20016407. S2CID 21743951.
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