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Catalog # HP9059

Beta-defensin 1, Human, pAb


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Antimicrobial proteins (AMP) are a fundamental element of the primary response against pathogens. AMP’s are small endogenous cationic molecules expressed by phagocytic and epithelial cells. The antimicrobial activity of AMP’s is directed towards a broad spectrum of pathogens, like Gram-positive & negative bacteria, viruses, yeast and fungi. AMP’s aid in innate and adaptive immunity via direct inactivation and by immunomodulatory activity like leukocyte migration. Defensins are the most prominent mammalian AMP’s. Three defensin peptide families are identified, the α-, β-, and θ-defensins. They are characterized by a triple-stranded β-hairpin structure, six disulfide-linked cysteine residues and a positive charge. They are synthesized as preproteins and undergo processing to become a fully active peptide. Defensins are divided in alpha- and beta-defensins depending on their disulfide bridging pattern. α- and β-defensins modify cell migration and maturation, induce cytokines and trigger histamin and prostaglandin D2 release from mast cells. There are six α-defensins: HNP (human neutrophil peptide)-1 to -4, HD5 & 6. Human beta-defensin 1(hBD-1) is considered a prominent AMP in epithelial defense against infection. High expression levels have been found in the kidney and female reproductive tract, especially in pregnant women. Besides antimicrobial activity, hBD1 has an effect on chemoattractive immature dendritic cells and probably memory T cells. After reduction of disulphide-bridges hBD-1 becomes a potent antimicrobial peptide against the opportunistic pathogenic fungus Candida albicans and against anaerobic Gram positive commensals of Bifidobacterium and Lactobacillus species.

Western blot

Application Notes
W: Size to be expected under reducing conditions is ~3.9 kDa.

For Western blot, dilutions to be used depend on detection system applied. It is recommended that users test the reagent and determine their own optimal dilutions. The typical starting working dilution is 1:50.

Product type
Polyclonal antibodies
100 µg, 20 µg
0.2 ml (100 µg/ml) 0.2 µm filtered antibody solution in PBS, containing 0.1% bovine serum albumin and 0.02% sodium azide.
Rabbit Ig
BD1, hBD-1, b-defensin 1, β-defensin 1
Storage and stability
Product should be stored at 4°C. Under recommended storage conditions, product is stable for one year.
For research use only. Not for use in or on humans or animals or for diagnostics. It is the responsibility of the user to comply with all local/state and Federal rules in the use of this product. Hycult Biotech is not responsible for any patent infringements that might result with the use of or derivation of this product.
Infectious diseases
66 kb
Safety Data Sheet

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