GRADE & PURITYAnimal Free?Animal-free — produced without animal-derived components to reduce contamination risk. Use in biomanufacturing and culture avoiding animal-origin material.Carrier Free?Carrier-free — supplied without added carrier protein/stabilizer. Use when carriers (e.g. BSA) would interfere with conjugation or sensitive assays.Bioactive?Bioactive grade — verified to retain biological activity in functional assays. Use when the molecule must be functionally active, not just pure.ActiBioPure™?ActiBioPure™ — Aladdin's premier line for bioactive and recombinant products. Use when both high purity and preserved biological activity are required.Azide Free?Azide-free — without sodium azide preservative. Use in conjugations, cell work, or assays where azide is toxic or inhibitory.PBS Only?PBS-only formulation — supplied in phosphate-buffered saline with no other additives. Use when you need a clean PBS buffer free of stabilizers/carriers.≥98%(SDS-PAGE&HPLC)0.5M in TMF
Expression System
E.coli
Accession #
P81534
Protein Tag
No tag
Expression system
E. coli
Endotoxin Concentration
<1.0 EU/μg
Bioactivity
Fully biologically active when compared to standard. The ED50 as determined by anti-microbial activity against E.coli. is less than 30 μg/ml.
Animal Free,Carrier Free,Bioactive,ActiBioPure™,Azide Free,PBS Only,≥98%(SDS-PAGE&HPLC),0.5M in TMF ActiBioPure™,Animal Free,Azide Free,Bioactive,Carrier Free,PBS Only for sensitive chromatographic and analytical workflows requiring minimal baseline interference.
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Storage & shipping
Store at -20°C,Avoid repeated freezing and thawing Ships Ice chest + Ice pads Check lot-specific COA for exact specifications.
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Quality documents
SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.
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Literature proof
Cited in 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
Overview
Purity
> 98% by SDS-PAGE and HPLC analyses.
Function
Defensins (alpha and beta) are cationic peptides with antimicrobial activity against Gram-positive bacteria S.aureus and S.pyogenes, Gram-negative bacteria P.aeruginosa and E.coli and the yeast C.albicans. Kills multiresistant S.aureus and vancomycin-resistent E.faecium. No significant hemolytic activity was observe.
They are 2-6 kDa proteins and take important roles in innate immune system. On the basis of their size and pattern of disulfide bonding, mammalian defensins are classified into alpha, beta and theta categories. β-Defensins contain a six-cysteine motif that forms three intra-molecular disulfide bonds. Four human β-defensins have been identified and they are expressed on some leukocytes and at epithelial surfaces. Because β-defensins is cationic peptides, they can therefore interact with the membrane of invading microbes, which are negative due to lipopolysaccharides (LPS) and lipoteichoic acid (LTA) found in the cell membrane. Especially, they have higher affinity to the binding site compared to Ca2+ and Mg2+ ions. Furthermore, they can affect the stability of the membrane.
Specifications
Product Name
Recombinant Human Beta-Defensin 3 Protein, ＞98%(SDS-PAGE, HPLC)
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1 % BSA to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at ≤ -20 ℃. Further dilutions should be made in appropriate buffered solutions.
Storage
Store at -20°C,Avoid repeated freezing and thawing
Shipped In
Ice chest + Ice pads
Stability And Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles. 12 months from date of receipt, -20 to -70 ℃ as supplied; 1 month, 2 to 8 ℃ under sterile conditions after reconstitution; 3 months, -20 to -70 ℃ under sterile conditions after reconstitu
Images
Recombinant Human Beta-Defensin 3 Protein (rp143202)-Protein Bioactivity Fully biologically active when compared to standard. The ED₅₀ as determined by anti-microbial activity against E.coli. is less than 30 μg/mL, corresponding to a specific activity of > 33.3 IU/mg.
Recombinant Human Beta-Defensin 3 Protein (rp143202)-SDS-PAGE Recombinant Human Beta-Defensin 3 Protein was resolved with SDS-PAGE under reducing (R) and visualized by Coomassie® Blue staining, showing a single band at 5.2 kDa.
Documentation
📋 Safety Data Sheet (SDS)
Comprehensive hazard, handling, storage, and regulatory compliance document.
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