DEFA5 defensin alpha 5 [Homo sapiens (human)] - Gene

Summary

Official Symbol: DEFA5provided by HGNC
Official Full Name: defensin alpha 5provided by HGNC
Primary source: HGNC:HGNC:2764
See related: Ensembl:ENSG00000164816 MIM:600472; AllianceGenome:HGNC:2764
Gene type: protein coding
RefSeq status: REVIEWED
Organism: Homo sapiens
Lineage: Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo
Also known as: DEF5; HD-5
Summary: 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. Several of the alpha defensin genes appear to be clustered on chromosome 8. The protein encoded by this gene, defensin, alpha 5, is highly expressed in the secretory granules of Paneth cells of the ileum. [provided by RefSeq, Oct 2014]
Expression: Restricted expression toward small intestine (RPKM 5886.0) See more
Orthologs: all
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Genomic context

Location:: 8p23.1

Exon count:: 2

Annotation release	Status	Assembly	Chr	Location
RS_2024_08	current	GRCh38.p14 (GCF_000001405.40)	8	NC_000008.11 (7055304..7056739, complement)
RS_2024_08	current	T2T-CHM13v2.0 (GCF_009914755.1)	8	NC_060932.1 (6809926..6811358, complement)
RS_2024_09	previous assembly	GRCh37.p13 (GCF_000001405.25)	8	NC_000008.10 (6912826..6914261, complement)

Chromosome 8 - NC_000008.11 Genomic Context describing neighboring genes

Genomic regions, transcripts, and products

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Genomic Sequence:

Go to nucleotide: Graphics FASTA GenBank

Expression

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See details

Project title: HPA RNA-seq normal tissues
Description: RNA-seq was performed of tissue samples from 95 human individuals representing 27 different tissues in order to determine tissue-specificity of all protein-coding genes
BioProject: PRJEB4337
Publication: PMID 24309898
Analysis date: Wed Apr 4 07:08:55 2018

Bibliography

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GeneRIFs: Gene References Into Functions

What's a GeneRIF?

Human Intestinal Defensin 5 Ameliorates the Sensitization of Colonic Cancer Cells to 5-Fluorouracil.
Title: Human Intestinal Defensin 5 Ameliorates the Sensitization of Colonic Cancer Cells to 5-Fluorouracil.
The Function and Modification of Human Defensin 5.
Title: The Function and Modification of Human Defensin 5.
Reduced DEFA5 Expression and STAT3 Activation Underlie the Submucosal Invasion of Early Gastric Cancers.
Title: Reduced DEFA5 Expression and STAT3 Activation Underlie the Submucosal Invasion of Early Gastric Cancers.
Association between alpha-defensin 5 and the expression and function of P-glycoprotein in differentiated intestinal Caco-2 cells.
Title: Association between α-defensin 5 and the expression and function of P-glycoprotein in differentiated intestinal Caco-2 cells.
3' untranslated region variants in DEFA5 gene associated with susceptibility to IgA nephropathy in the Chinese Han population.
Title: 3' untranslated region variants in DEFA5 gene associated with susceptibility to IgA nephropathy in the Chinese Han population.
Lower human defensin 5 in elderly people compared to middle-aged is associated with differences in the intestinal microbiota composition: the DOSANCO Health Study.
Title: Lower human defensin 5 in elderly people compared to middle-aged is associated with differences in the intestinal microbiota composition: the DOSANCO Health Study.
Human alpha-defensin 5 suppressed colon cancer growth by targeting PI3K pathway.
Title: Human α-defensin 5 suppressed colon cancer growth by targeting PI3K pathway.
Linking bacterial enterotoxins and alpha defensin 5 expansion in the Crohn's colitis: A new insight into the etiopathogenetic and differentiation triggers driving colonic inflammatory bowel disease.
Title: Linking bacterial enterotoxins and alpha defensin 5 expansion in the Crohn's colitis: A new insight into the etiopathogenetic and differentiation triggers driving colonic inflammatory bowel disease.
The inhibitory effect of human DEFA5 in growth of gastric cancer by targeting BMI1.
Title: The inhibitory effect of human DEFA5 in growth of gastric cancer by targeting BMI1.
An alpha-defensin gene single nucleotide polymorphism modulates the gut microbiota and may alter the risk of acute graft-versus-host disease.
Title: An alpha-defensin gene single nucleotide polymorphism modulates the gut microbiota and may alter the risk of acute graft-versus-host disease.

Submit: New GeneRIF Correction See all GeneRIFs (68)

Phenotypes

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Find tests for this gene in the NIH Genetic Testing Registry (GTR)

Review eQTL and phenotype association data in this region using PheGenI

Variation

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See variants in ClinVar

See studies and variants in dbVar

See Variation Viewer (GRCh37.p13)

See Variation Viewer (GRCh38)

HIV-1 interactions

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Protein interactions

Protein	Gene	Interaction	Pubs
Envelope surface glycoprotein gp120	env	Human alpha-defensin-5 binds to both HIV-1 gp120 and CD4 and blocks the interaction of CD4 with gp120, which leads to inhibit HIV-1 replication in human primary CD4+ T lymphocytes	PubMed
	env	Alpha-defensins inhibit the binding of HIV-1 gp120 to CD4 through interaction with the D1 domain of CD4	PubMed

Go to the HIV-1, Human Interaction Database

Interactions

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Products	Interactant	Other Gene	Complex	Source	Pubs	Description

General gene information

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Markers

RH17763 (e-PCR)
- UniSTS:38520

NoName (e-PCR)
- UniSTS:484029

Gene Ontology Provided by GOA

Function	Evidence Code	Pubs
enables protein binding	IPI Inferred from Physical Interaction more info	PubMed
enables protein homodimerization activity	IDA Inferred from Direct Assay more info	PubMed

Process	Evidence Code	Pubs
involved_in antibacterial humoral response	IBA Inferred from Biological aspect of Ancestor more info
involved_in antimicrobial humoral immune response mediated by antimicrobial peptide	IBA Inferred from Biological aspect of Ancestor more info
involved_in antimicrobial humoral immune response mediated by antimicrobial peptide	IC Inferred by Curator more info	PubMed
involved_in antimicrobial humoral immune response mediated by antimicrobial peptide	IDA Inferred from Direct Assay more info	PubMed
involved_in cellular response to lipopolysaccharide	IBA Inferred from Biological aspect of Ancestor more info
involved_in defense response to Gram-negative bacterium	IBA Inferred from Biological aspect of Ancestor more info
involved_in defense response to Gram-negative bacterium	IDA Inferred from Direct Assay more info	PubMed
involved_in defense response to Gram-negative bacterium	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in defense response to Gram-positive bacterium	IBA Inferred from Biological aspect of Ancestor more info
involved_in defense response to Gram-positive bacterium	IDA Inferred from Direct Assay more info	PubMed
involved_in defense response to Gram-positive bacterium	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in defense response to fungus	IEA Inferred from Electronic Annotation more info
involved_in disruption of plasma membrane integrity in another organism	IBA Inferred from Biological aspect of Ancestor more info
involved_in innate immune response	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in innate immune response in mucosa	IBA Inferred from Biological aspect of Ancestor more info
involved_in killing by host of symbiont cells	IDA Inferred from Direct Assay more info	PubMed
involved_in killing of cells of another organism	IDA Inferred from Direct Assay more info	PubMed
involved_in positive regulation of interleukin-8 production	IDA Inferred from Direct Assay more info	PubMed
involved_in positive regulation of membrane permeability	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in protein homotetramerization	IDA Inferred from Direct Assay more info	PubMed

Component	Evidence Code	Pubs
located_in Golgi lumen	TAS Traceable Author Statement more info
located_in extracellular region	TAS Traceable Author Statement more info
is_active_in extracellular space	IBA Inferred from Biological aspect of Ancestor more info
located_in extracellular space	IDA Inferred from Direct Assay more info	PubMed
located_in intracellular membrane-bounded organelle	IDA Inferred from Direct Assay more info
located_in midbody	IDA Inferred from Direct Assay more info
located_in secretory granule	IDA Inferred from Direct Assay more info	PubMed
located_in secretory granule lumen	TAS Traceable Author Statement more info
located_in transport vesicle	IEA Inferred from Electronic Annotation more info

General protein information

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Preferred Names: defensin alpha 5

Names: HD5(20-94); defensin, alpha 5, Paneth cell-specific; defensin, alpha 5, preproprotein; defensin-5

NCBI Reference Sequences (RefSeq)

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RefSeqs maintained independently of Annotated Genomes

These reference sequences exist independently of genome builds. Explain

These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.