DEFB1 defensin beta 1 [Homo sapiens (human)] - Gene

Summary

Official Symbol: DEFB1provided by HGNC
Official Full Name: defensin beta 1provided by HGNC
Primary source: HGNC:HGNC:2766
See related: Ensembl:ENSG00000164825 MIM:602056; AllianceGenome:HGNC:2766
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: BD1; HBD1; DEFB-1; DEFB101
Summary: Defensins form a family of microbicidal and cytotoxic peptides made by neutrophils. Members of the defensin family are highly similar in protein sequence. This gene encodes defensin, beta 1, an antimicrobial peptide implicated in the resistance of epithelial surfaces to microbial colonization. This gene maps in close proximity to defensin family member, defensin, alpha 1 and has been implicated in the pathogenesis of cystic fibrosis. [provided by RefSeq, Jul 2008]
Expression: Biased expression in kidney (RPKM 464.8), salivary gland (RPKM 76.4) and 2 other tissues See more
Orthologs: all
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Genomic context

Location:: 8p23.1

Exon count:: 2

Annotation release	Status	Assembly	Chr	Location
RS_2025_08	current	GRCh38.p14 (GCF_000001405.40)	8	NC_000008.11 (6870592..6877936, complement)
RS_2025_08	current	T2T-CHM13v2.0 (GCF_009914755.1)	8	NC_060932.1 (6625781..6633102, complement)
RS_2024_09	previous assembly	GRCh37.p13 (GCF_000001405.25)	8	NC_000008.10 (6728114..6735458, 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: Tissue-specific circular RNA induction during human fetal development
Description: 35 human fetal samples from 6 tissues (3 - 7 replicates per tissue) collected between 10 and 20 weeks gestational time were sequenced using Illumina TruSeq Stranded Total RNA
BioProject: PRJNA270632
Publication: PMID 26076956
Analysis date: Mon Apr 2 22:54:59 2018

Bibliography

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GeneRIFs: Gene References Into Functions

What's a GeneRIF?

The DEFB1 gene rs11362 A/G genetic variant is associated with risk of developing CAD: a case-control study.
Title: The DEFB1 gene rs11362 A/G genetic variant is associated with risk of developing CAD: a case-control study.
Polymorphic variation of the DEFB1 gene might contribute to the development of ankylosing spondylitis: a preliminary study.
Title: Polymorphic variation of the DEFB1 gene might contribute to the development of ankylosing spondylitis: a preliminary study.
Effects of Schumann resonance on the proliferation and migration of normal human epidermal keratinocytes and the expression of DEFB1 and SIRT1.
Title: Effects of Schumann resonance on the proliferation and migration of normal human epidermal keratinocytes and the expression of DEFB1 and SIRT1.
Relationship between biofilm-forming microorganisms (BFM: Staphylococcus aureus and Pseudomonas aeruginosa) and DEFB1 gene variants on beta-defensin levels in periprosthetic joint infection (PJI).
Title: Relationship between biofilm-forming microorganisms (BFM: Staphylococcus aureus and Pseudomonas aeruginosa) and DEFB1 gene variants on β-defensin levels in periprosthetic joint infection (PJI).
Salivary Th17 cytokine, human beta-defensin 1-3, and salivary scavenger and agglutinin levels in Crohn's disease.
Title: Salivary Th17 cytokine, human β-defensin 1-3, and salivary scavenger and agglutinin levels in Crohn's disease.
Human beta-defensin 1 circulating level and gene polymorphism in non-segmental vitiligo Egyptian patients.
Title: Human beta-defensin 1 circulating level and gene polymorphism in non-segmental vitiligo Egyptian patients.
Associations of PART1 and DEFB1 polymorphisms with Dental Caries in twelve-year-old children in Southern China: a cross-sectional study.
Title: Associations of PART1 and DEFB1 polymorphisms with Dental Caries in twelve-year-old children in Southern China: a cross-sectional study.
beta-defensin 1 Gene Polymorphisms are Associated with Kidney Disease in Northwestern Mexicans with Type 2 Diabetes.
Title: β-defensin 1 Gene Polymorphisms are Associated with Kidney Disease in Northwestern Mexicans with Type 2 Diabetes.
In-silico analysis of non-synonymous single nucleotide polymorphisms in human beta-defensin type 1 gene reveals their impact on protein-ligand binding sites.
Title: In-silico analysis of non-synonymous single nucleotide polymorphisms in human β-defensin type 1 gene reveals their impact on protein-ligand binding sites.
Prostaglandin-endoperoxide synthase (PTGS2) and Defensin beta 1 (DEFB1) gene polymorphisms are not associated with periodontitis in Malays.
Title: Prostaglandin-endoperoxide synthase (PTGS2) and Defensin beta 1 (DEFB1) gene polymorphisms are not associated with periodontitis in Malays.

Submit: New GeneRIF Correction See all GeneRIFs (185)

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

EBI GWAS Catalog

Description
Gene-age interactions in blood pressure regulation: a large-scale investigation with the CHARGE, Global BPgen, and ICBP Consortia. EBI GWAS Catalog EBI GWAS CatalogPubMed

Variation

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See variants in ClinVar

See studies and variants in dbVar

See Variation Viewer (GRCh37.p13)

See Variation Viewer (GRCh38)

Interactions

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Products	Interactant	Other Gene	Complex	Source	Pubs	Description

General gene information

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Gene Ontology Provided by GOA

Function	Evidence Code	Pubs
enables CCR6 chemokine receptor binding	IBA Inferred from Biological aspect of Ancestor more info
enables CCR6 chemokine receptor binding	IDA Inferred from Direct Assay more info	PubMed
enables identical protein binding	IDA Inferred from Direct Assay more info	PubMed
enables protein binding	IPI Inferred from Physical Interaction more info	PubMed

Process	Evidence Code	Pubs
involved_in G protein-coupled receptor signaling pathway	TAS Traceable Author Statement more info	PubMed
involved_in antibacterial humoral response	IDA Inferred from Direct Assay more info	PubMed
involved_in antimicrobial humoral immune response mediated by antimicrobial peptide	IDA Inferred from Direct Assay more info	PubMed
involved_in antimicrobial humoral immune response mediated by antimicrobial peptide	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in calcium-mediated signaling	IDA Inferred from Direct Assay more info	PubMed
involved_in chemotaxis	TAS Traceable Author Statement more info	PubMed
involved_in defense response	IEA Inferred from Electronic Annotation 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	IEA Inferred from Electronic Annotation more info
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	IEA Inferred from Electronic Annotation more info
involved_in defense response to Gram-positive bacterium	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in defense response to bacterium	IEA Inferred from Electronic Annotation more info
acts_upstream_of_or_within defense response to bacterium	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in defense response to symbiont	IEA Inferred from Electronic Annotation more info
involved_in immune response	TAS Traceable Author Statement more info	PubMed
involved_in innate immune response	ISS Inferred from Sequence or Structural Similarity more info
involved_in innate immune response	NAS Non-traceable Author Statement more info	PubMed
involved_in innate immune response in mucosa	IBA Inferred from Biological aspect of Ancestor more info
involved_in innate immune response in mucosa	IDA Inferred from Direct Assay more info	PubMed
involved_in positive regulation of flagellated sperm motility involved in capacitation	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in response to bacterium	IDA Inferred from Direct Assay more info	PubMed
involved_in response to bacterium	ISS Inferred from Sequence or Structural Similarity more info

Component	Evidence Code	Pubs
located_in Golgi lumen	IEA Inferred from Electronic Annotation more info
located_in Golgi lumen	TAS Traceable Author Statement more info
located_in extracellular exosome	HDA more info	PubMed
located_in extracellular region	IEA Inferred from Electronic Annotation 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 extracellular space	IEA Inferred from Electronic Annotation more info
located_in membrane	IDA Inferred from Direct Assay more info	PubMed
located_in membrane	IEA Inferred from Electronic Annotation more info
located_in microvesicle	IDA Inferred from Direct Assay more info	PubMed
located_in sperm midpiece	IDA Inferred from Direct Assay more info	PubMed

General protein information

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Preferred Names: beta-defensin 1

Names: BD-1

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.