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Pack Size | Price | Availability | Quantity |
---|---|---|---|
10 μg | $129 | 7-10 days | |
50 μg | $390 | 7-10 days | |
500 μg | $1,900 | 7-10 days | |
1 mg | $2,730 | 7-10 days |
Description | Defensins are cationic peptides. It is an important ingredient of the innate immune system. β-defensins are expressed on some leukocytes and epithelial surfaces. Four human β-Defensins have been identified to date: BD-1, BD-2, BD-3 and BD-4. β-defensins contain a six-cysteine motif, they forms three intra-molecular disulfide bonds. β-defensins are also chemoattractant towards immature dendritic cells and memory T cells. The β-defensin proteins are expressed as the C-terminal portion of precursors; they are released by proteolytic cleavage of a signal sequence. |
Species | Human |
Expression System | E. coli |
Tag | Tag Free |
Accession Number | Q8WTQ1 |
Synonyms | DEFB4,DEFB104B,hBD-4,DEFB104,BD-4,DEFB-4,Beta-Defensin 104,Beta-Defensin 4,β-Defensin 104,Defensin Beta 104,β-Defensin 4,Defensin β104,DEFB104A |
Amino Acid | Glu23-Pro72 |
Construction | Glu23-Pro72 |
Protein Purity | Greater than 95% as determined by reducing SDS-PAGE. (QC verified) |
Molecular Weight | 9 KDa (reducing condition) |
Endotoxin | < 0.1 ng/µg (1 EU/µg) as determined by LAL test. |
Formulation | Lyophilized from a solution filtered through a 0.22 μm filter, containing 20 mM PB, 130 mM NaCl, pH 7.4. |
Reconstitution | Reconstitute the lyophilized protein in distilled water. The product concentration should not be less than 100 μg/ml. Before opening, centrifuge the tube to collect powder at the bottom. After adding the reconstitution buffer, avoid vortexing or pipetting for mixing. |
Stability & Storage | Lyophilized powders can be stably stored for over 12 months, while liquid products can be stored for 6-12 months at -80°C. For reconstituted protein solutions, the solution can be stored at -20°C to -80°C for at least 3 months. Please avoid multiple freeze-thaw cycles and store products in aliquots. |
Shipping | In general, Lyophilized powders are shipping with blue ice. Solutions are shipping with dry ice. |
Research Background | Defensins are cationic peptides. It is an important ingredient of the innate immune system. β-defensins are expressed on some leukocytes and epithelial surfaces. Four human β-Defensins have been identified to date: BD-1, BD-2, BD-3 and BD-4. β-defensins contain a six-cysteine motif, they forms three intra-molecular disulfide bonds. β-defensins are also chemoattractant towards immature dendritic cells and memory T cells. The β-defensin proteins are expressed as the C-terminal portion of precursors; they are released by proteolytic cleavage of a signal sequence. |
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