DEFA6

Defensin, alpha 6 (DEFA6) also known as human alpha defensin 6 (HD6) is a human protein that is encoded by the DEFA6 gene.[3][4] DEFA6 is expressed in the Paneth cells of the ileum.[5]

DEFA6
Available structures
PDBHuman UniProt search: PDBe RCSB
Identifiers
AliasesDEFA6, DEF6, HD-6, defensin alpha 6
External IDsOMIM: 600471 HomoloGene: 130499 GeneCards: DEFA6
Orthologs
SpeciesHumanMouse
Entrez

1671

n/a

Ensembl

ENSG00000164822
ENSG00000285136

n/a

UniProt

Q01524

n/a

RefSeq (mRNA)

NM_001926

n/a

RefSeq (protein)

NP_001917

n/a

Location (UCSC)Chr 8: 6.92 – 6.93 Mbn/a
PubMed search[2]n/a
Wikidata
View/Edit Human

Function

The alpha defensins are a family of microbicidal and cytotoxic peptides that defend the host against bacteria and viruses. HD6 has poor antibacterial potency.[6] However, HD6 affords protection against invasion by enteric bacterial pathogens by self-assembly to form fibrils and nanonets that surround and entangle bacteria.[7]

Several alpha defensin genes, including DEFA6, are clustered on chromosome 8.[3]

References

  1. ENSG00000285136 GRCh38: Ensembl release 89: ENSG00000164822, ENSG00000285136 - Ensembl, May 2017
  2. "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  3. "Entrez Gene: DEFA6 defensin, alpha 6, Paneth cell-specific (Homo sapiens)".
  4. Jones DE, Bevins CL (January 1993). "Defensin-6 mRNA in human Paneth cells: implications for antimicrobial peptides in host defense of the human bowel". FEBS Letters. 315 (2): 187–92. doi:10.1016/0014-5793(93)81160-2. PMID 8417977. S2CID 45099115.
  5. Zhao C, Wang I, Lehrer RI (November 1996). "Widespread expression of beta-defensin hBD-1 in human secretory glands and epithelial cells". FEBS Letters. 396 (2–3): 319–22. doi:10.1016/0014-5793(96)01123-4. PMID 8915011. S2CID 22367037.
  6. 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.
  7. Chu H, Pazgier M, Jung G, Nuccio SP, Castillo PA, de Jong MF, et al. (July 2012). "Human α-defensin 6 promotes mucosal innate immunity through self-assembled peptide nanonets". Science. 337 (6093): 477–81. doi:10.1126/science.1218831. PMC 4332406. PMID 22722251.

Further reading

  • PDBe-KB provides an overview of all the structure information available in the PDB for Human Defensin-6
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