Defensin Beta-2
Also known as: HBD-2, DEFB4A, human beta-defensin 2
Inducible beta-defensin upregulated by NF-κB in response to infection; studied in innate immunity and skin barrier models.
Quick Reference
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Overview
Mammalian protein found in humans
Defensin beta 4A, also commonly known as beta-defensin 2 (BD-2), is a peptide that in humans is encoded by the gene DEFB4A. The nearby gene, DEFB4B, encodes an identical protein in the human reference genome (GRCh38). Defensin beta 4A has been referred to by various other names, including skin-antimicrobial peptide 1 (SAP1) and defensin, beta 4.
Mechanism of Action
Defensin beta 4A, also commonly known as beta-defensin 2 (BD-2), is a peptide that in humans is encoded by the gene DEFB4A. The nearby gene, DEFB4B, encodes an identical protein in the human reference genome (GRCh38). Defensin beta 4A has been referred to by various other names, including skin-antimicrobial peptide 1 (SAP1) and defensin, beta 4.
What Researchers Are Saying
Community Reports - Not Medical Advice
The following is aggregated from public forums, Reddit, and research communities. These are anecdotal reports from researchers only - not verified clinical data and not a recommendation of any kind.
Defensin Beta-2 (also known as HBD-2, DEFB4A) is studied within the antimicrobial and infection research community. Inducible beta-defensin upregulated by NF-κB in response to infection; studied in innate immunity and skin barrier models.
Last updated October 28, 2026
Research status: active. Defensin Beta-2 appears across antimicrobial and infection research forums and academic literature. Researchers note this compound falls in the antimicrobial category.
Last updated October 28, 2026
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