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Aliases for DEFA3 Gene

Aliases for DEFA3 Gene

  • Defensin Alpha 3 2 3 5
  • Defensin, Alpha 3, Neutrophil-Specific 2 3
  • HNP-3 3 4
  • DEF3 3 4
  • HP-3 3 4
  • HP3 3 4
  • Defensin 3, Neutrophil-Specific 3
  • Neutrophil Peptide 3 3
  • Defensin, Alpha 3 4
  • HNP3 3

External Ids for DEFA3 Gene

Previous HGNC Symbols for DEFA3 Gene

  • DEF3

Previous GeneCards Identifiers for DEFA3 Gene

  • GC08M006918
  • GC08M007108
  • GC08M007033
  • GC08M006860
  • GC08M006875

Summaries for DEFA3 Gene

Entrez Gene Summary for DEFA3 Gene

  • Defensins are a family of antimicrobial and cytotoxic peptides thought to be involved in host defense. They are abundant in the granules of neutrophils and also found in the epithelia of mucosal surfaces such as those of the intestine, respiratory tract, urinary tract, and vagina. Members of the defensin family are highly similar in protein sequence and distinguished by a conserved cysteine motif. The protein encoded by this gene, defensin, alpha 3, is found in the microbicidal granules of neutrophils and likely plays a role in phagocyte-mediated host defense. Several alpha defensin genes are clustered on chromosome 8. This gene differs from defensin, alpha 1 by only one amino acid. This gene and the gene encoding defensin, alpha 1 are both subject to copy number variation. [provided by RefSeq, Oct 2014]

GeneCards Summary for DEFA3 Gene

DEFA3 (Defensin Alpha 3) is a Protein Coding gene. Among its related pathways are Immune System and Defensins. An important paralog of this gene is DEFA1B.

UniProtKB/Swiss-Prot for DEFA3 Gene

  • Defensin 2 and defensin 3 have antibiotic, fungicide and antiviral activities. Has antimicrobial activity against Gram-negative and Gram-positive bacteria. Defensins are thought to kill microbes by permeabilizing their plasma membrane.

Gene Wiki entry for DEFA3 Gene

No data available for Tocris Summary , PharmGKB "VIP" Summary , fRNAdb sequence ontologies and piRNA Summary for DEFA3 Gene

Genomics for DEFA3 Gene

Regulatory Elements for DEFA3 Gene

Enhancers for DEFA3 Gene
GeneHancer Identifier Score Enhancer Sources TSS distance (kb) Number of Genes Away Size (kb) Transcription Factor Binding Sites within enhancer Other Gene Targets for Enhancer

Enhancers around DEFA3 on UCSC Golden Path with GeneCards custom track

Genomic Location for DEFA3 Gene

6,996,837 bp from pter
7,018,339 bp from pter
21,503 bases
Minus strand

Genomic View for DEFA3 Gene

Genes around DEFA3 on UCSC Golden Path with GeneCards custom track

Cytogenetic band:
DEFA3 Gene in genomic location: bands according to Ensembl, locations according to GeneLoc (and/or Entrez Gene and/or Ensembl if different)
Genomic Location for DEFA3 Gene
GeneLoc Logo Genomic Neighborhood Exon StructureGene Density

RefSeq DNA sequence for DEFA3 Gene

Proteins for DEFA3 Gene

  • Protein details for DEFA3 Gene (UniProtKB/Swiss-Prot)

    Protein Symbol:
    Recommended name:
    Neutrophil defensin 3
    Protein Accession:
    Secondary Accessions:
    • P11479
    • Q14125

    Protein attributes for DEFA3 Gene

    94 amino acids
    Molecular mass:
    10245 Da
    Quaternary structure:
    • Dimer.

    Three dimensional structures from OCA and Proteopedia for DEFA3 Gene

neXtProt entry for DEFA3 Gene

Proteomics data for DEFA3 Gene at MOPED

Post-translational modifications for DEFA3 Gene

  • Modification sites at PhosphoSitePlus
  • Modification sites at neXtProt

Other Protein References for DEFA3 Gene

ENSEMBL proteins:
REFSEQ proteins:

No data available for DME Specific Peptides for DEFA3 Gene

Domains & Families for DEFA3 Gene

Gene Families for DEFA3 Gene

Protein Domains for DEFA3 Gene

Suggested Antigen Peptide Sequences for DEFA3 Gene

Graphical View of Domain Structure for InterPro Entry



  • Belongs to the alpha-defensin family.
  • Belongs to the alpha-defensin family.
genes like me logo Genes that share domains with DEFA3: view

Function for DEFA3 Gene

Molecular function for DEFA3 Gene

GENATLAS Biochemistry:
defensin alpha 3,3-4kDa,,hematopoietic,released from azurophil granules of neutrophiles,oxygen independent phagocytosis of Gram+,Gram- bacteria,many fungi,some viruses
UniProtKB/Swiss-Prot Function:
Defensin 2 and defensin 3 have antibiotic, fungicide and antiviral activities. Has antimicrobial activity against Gram-negative and Gram-positive bacteria. Defensins are thought to kill microbes by permeabilizing their plasma membrane.
genes like me logo Genes that share phenotypes with DEFA3: view

Animal Model Products

miRNA for DEFA3 Gene

miRTarBase miRNAs that target DEFA3

No data available for Enzyme Numbers (IUBMB) , Gene Ontology (GO) - Molecular Function , Human Phenotype Ontology , Animal Models , Transcription Factor Targets and HOMER Transcription for DEFA3 Gene

Localization for DEFA3 Gene

Subcellular locations from UniProtKB/Swiss-Prot for DEFA3 Gene


Subcellular locations from

Jensen Localization Image for DEFA3 Gene COMPARTMENTS Subcellular localization image for DEFA3 gene
Compartment Confidence
extracellular 5
lysosome 5
vacuole 5
golgi apparatus 4

Gene Ontology (GO) - Cellular Components for DEFA3 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0005796 Golgi lumen TAS --
GO:0070062 extracellular exosome IDA 23533145
genes like me logo Genes that share ontologies with DEFA3: view

Pathways & Interactions for DEFA3 Gene

genes like me logo Genes that share pathways with DEFA3: view

Pathways by source for DEFA3 Gene

4 Reactome pathways for DEFA3 Gene
1 KEGG pathway for DEFA3 Gene

Interacting Proteins for DEFA3 Gene

Gene Ontology (GO) - Biological Process for DEFA3 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0002227 innate immune response in mucosa IDA 12860195
GO:0030520 intracellular estrogen receptor signaling pathway IDA 21861873
GO:0031640 killing of cells of other organism IEA --
GO:0045087 innate immune response TAS --
GO:0051607 defense response to virus IEA --
genes like me logo Genes that share ontologies with DEFA3: view

No data available for SIGNOR curated interactions for DEFA3 Gene

Drugs & Compounds for DEFA3 Gene

(1) Drugs for DEFA3 Gene - From: Novoseek

Name Status Disease Links Group Role Mechanism of Action Clinical Trials

(2) Additional Compounds for DEFA3 Gene - From: Novoseek

Name Synonyms Role CAS Number PubChem IDs PubMed IDs
genes like me logo Genes that share compounds with DEFA3: view

Transcripts for DEFA3 Gene

mRNA/cDNA for DEFA3 Gene

Unigene Clusters for DEFA3 Gene

Defensin, alpha 3, neutrophil-specific:
Representative Sequences:

Alternative Splicing Database (ASD) splice patterns (SP) for DEFA3 Gene

No ASD Table

Relevant External Links for DEFA3 Gene

GeneLoc Exon Structure for
ECgene alternative splicing isoforms for

Expression for DEFA3 Gene

mRNA expression in normal human tissues for DEFA3 Gene

mRNA expression in embryonic tissues and stem cells from LifeMap Discovery

mRNA differential expression in normal tissues according to GTEx for DEFA3 Gene

This gene is overexpressed in Whole Blood (x48.5).

Protein differential expression in normal tissues from HIPED for DEFA3 Gene

This gene is overexpressed in Saliva (39.2), Urine (10.3), Serum (9.3), and CD4 Tcells (6.0).

Integrated Proteomics: protein expression in normal tissues and cell lines from ProteomicsDB, PaxDb, and MOPED for DEFA3 Gene

SOURCE GeneReport for Unigene cluster for DEFA3 Gene Hs.654448

genes like me logo Genes that share expression patterns with DEFA3: view

Protein tissue co-expression partners for DEFA3 Gene

Primer Products

No data available for mRNA Expression by UniProt/SwissProt for DEFA3 Gene

Orthologs for DEFA3 Gene

This gene was present in the common ancestor of human and chimp.

Orthologs for DEFA3 Gene

Organism Taxonomy Gene Similarity Type Details
(Pan troglodytes)
Mammalia DEFA4 36
  • 67 (a)
Species with no ortholog for DEFA3:
  • A. gosspyii yeast (Ashbya gossypii)
  • Actinobacteria (Mycobacterium tuberculosis)
  • African clawed frog (Xenopus laevis)
  • African malaria mosquito (Anopheles gambiae)
  • Alicante grape (Vitis vinifera)
  • alpha proteobacteria (Wolbachia pipientis)
  • amoeba (Dictyostelium discoideum)
  • Archea (Pyrococcus horikoshii)
  • baker's yeast (Saccharomyces cerevisiae)
  • barley (Hordeum vulgare)
  • beta proteobacteria (Neisseria meningitidis)
  • bread mold (Neurospora crassa)
  • chicken (Gallus gallus)
  • Chromalveolata (Phytophthora infestans)
  • common water flea (Daphnia pulex)
  • corn (Zea mays)
  • cow (Bos Taurus)
  • dog (Canis familiaris)
  • E. coli (Escherichia coli)
  • filamentous fungi (Aspergillus nidulans)
  • Firmicute bacteria (Streptococcus pneumoniae)
  • fission yeast (Schizosaccharomyces pombe)
  • fruit fly (Drosophila melanogaster)
  • green algae (Chlamydomonas reinhardtii)
  • honey bee (Apis mellifera)
  • K. lactis yeast (Kluyveromyces lactis)
  • lizard (Anolis carolinensis)
  • loblloly pine (Pinus taeda)
  • malaria parasite (Plasmodium falciparum)
  • medicago trunc (Medicago Truncatula)
  • moss (Physcomitrella patens)
  • mouse (Mus musculus)
  • oppossum (Monodelphis domestica)
  • orangutan (Pongo pygmaeus)
  • pig (Sus scrofa)
  • platypus (Ornithorhynchus anatinus)
  • rainbow trout (Oncorhynchus mykiss)
  • rat (Rattus norvegicus)
  • rice (Oryza sativa)
  • rice blast fungus (Magnaporthe grisea)
  • schistosome parasite (Schistosoma mansoni)
  • sea anemone (Nematostella vectensis)
  • sea squirt (Ciona intestinalis)
  • sea squirt (Ciona savignyi)
  • sea urchin (Strongylocentrotus purpuratus)
  • sorghum (Sorghum bicolor)
  • soybean (Glycine max)
  • stem rust fungus (Puccinia graminis)
  • sugarcane (Saccharum officinarum)
  • thale cress (Arabidopsis thaliana)
  • tomato (Lycopersicon esculentum)
  • toxoplasmosis (Toxoplasma gondii)
  • Trichoplax (Trichoplax adhaerens)
  • tropical clawed frog (Silurana tropicalis)
  • wheat (Triticum aestivum)
  • worm (Caenorhabditis elegans)
  • zebrafish (Danio rerio)

Evolution for DEFA3 Gene

Gene Tree for DEFA3 (if available)
Gene Tree for DEFA3 (if available)

Paralogs for DEFA3 Gene

Paralogs for DEFA3 Gene

(6) SIMAP similar genes for DEFA3 Gene using alignment to 2 proteins:

genes like me logo Genes that share paralogs with DEFA3: view

Variants for DEFA3 Gene

Sequence variations from dbSNP and Humsavar for DEFA3 Gene

SNP ID Clin Chr 08 pos Sequence Context AA Info Type
rs2230231 -- 7,016,081(-) CATGG(A/C)CTGCT reference, missense
rs2294054 -- 7,016,474(-) GAAAC(A/G)TCTGT intron-variant
rs2615770 -- 7,020,030(-) ATGGA(C/T)TGTGG upstream-variant-2KB
rs2615798 -- 7,018,018(-) CTAAA(A/C/T)ACACA intron-variant
rs9650669 -- 7,020,023(+) TATCC(A/T)TCCAC upstream-variant-2KB

Structural Variations from Database of Genomic Variants (DGV) for DEFA3 Gene

Variant ID Type Subtype PubMed ID
nsv465436 CNV Gain 19166990
esv2752262 CNV Gain 17911159
dgv7656n71 CNV Gain 21882294
dgv7657n71 CNV Gain 21882294
nsv428194 CNV Gain+Loss 18775914
nsv528374 CNV Gain 19592680
dgv2190e1 CNV Complex 17122850
essv14510 CNV CNV 17122850
dgv2191e1 CNV Complex 17122850
nsv831221 CNV Gain 17160897
nsv890068 CNV Gain 21882294
nsv6060 CNV Loss 18451855
nsv890069 CNV Gain 21882294
nsv527917 CNV Gain 19592680
esv21544 CNV Gain+Loss 19812545
nsv820476 CNV Duplication 20802225
nsv8278 CNV Gain+Loss 18304495
nsv515096 CNV Complex 21397061
nsv437041 CNV Loss 16327808
nsv435861 CNV Deletion 17901297
nsv6064 CNV Insertion 18451855
nsv890070 CNV Loss 21882294
nsv890071 CNV Gain 21882294
nsv482119 CNV Gain 20164927

Variation tolerance for DEFA3 Gene

Gene Damage Index Score: 0.38; 8.31% of all genes are more intolerant (likely to be disease-causing)

No data available for Polymorphic Variants from UniProtKB/Swiss-Prot and Relevant External Links for DEFA3 Gene

Disorders for DEFA3 Gene

Relevant External Links for DEFA3

Genetic Association Database (GAD)
Human Genome Epidemiology (HuGE) Navigator
Atlas of Genetics and Cytogenetics in Oncology and Haematology:

No disorders were found for DEFA3 Gene.

No data available for MalaCards , UniProtKB/Swiss-Prot and Genatlas for DEFA3 Gene

Publications for DEFA3 Gene

  1. The structure of neutrophil defensin genes. (PMID: 8477861) Linzmeier R. … Ganz T. (FEBS Lett. 1993) 2 3 4 23 67
  2. Inter-population variability of DEFA3 gene absence: correlation with haplotype structure and population variability. (PMID: 17214878) Ballana E. … Estivill X. (BMC Genomics 2007) 2 3 23
  3. Copy number polymorphism and expression level variation of the human alpha-defensin genes DEFA1 and DEFA3. (PMID: 15944200) Aldred P.M. … Armour J.A. (Hum. Mol. Genet. 2005) 2 3 23
  4. Human alpha-defensins inhibit Clostridium difficile toxin B. (PMID: 18435932) Giesemann T. … Aktories K. (Gastroenterology 2008) 3 23
  5. Contribution of alpha- and beta-defensins to lung function decline and infection in smokers: an association study. (PMID: 16700921) Wallace A.M. … Sandford A.J. (Respir. Res. 2006) 3 23

Products for DEFA3 Gene

Sources for DEFA3 Gene