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Ä«Å×°í¸® Cytokines & Growth Factor
CAT.NO LGP-12-089
PRODUCT BD-3, Mouse (Murine Beta-defensin 3)
SIZE 20ug, 100ug, 500ug
PRICE KRW 285,000, 953,000, 2,783,000
Technical Parameters
Synonyms Defensin beta3
Accession Q9WTL0
GeneID 27358
Source Escherichia coli.
Molecular Weight Approximately 4.6 kDa, a single non-glycosylated polypeptide chain containing 41 amino acid residues.
Quantity 20µg/100µg/500µg
AA Sequence KKINNPVSCL RKGGRCWNRC IGNTRQIGSC GVPFLKCCKR K
Purity > 95 % by SDS-PAGE and HPLC analyses.
Biological Activity Fully biologically active when compared to standard. The ED50 as determined by anti-microbial activity against E.coli. is less than 20 ¥ìg/ml, corresponding to a specific activity of > 50 IU/mg.
Physical Appearance Sterile Filtered White lyophilized (freeze-dried) powder.
Formulation Lyophilized from a 0.2 µm filtered concentrated solution in 2 ¡¿ PBS, pH 7.4.
Endotoxin Less than 1 EU/¥ìg of rMuBD-3 as determined by LAL method.
Reconstitution 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 ¡Â -20 ¡ÆC. Further dilutions should be made in appropriate buffered solutions.
Stability & Storage Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
- 12 months from date of receipt, -20 to -70 ¡ÆC as supplied.
- 1 month, 2 to 8 ¡ÆC under sterile conditions after reconstitution.
- 3 months, -20 to -70 ¡ÆC under sterile conditions after reconstitution.
Usage This material is offered by Korea Lugen Sci for research, laboratory or further evaluation purposes. NOT FOR HUMAN USE.
SDS-PAGE
Reference 1. Lioi AB, Reyes Rodriguez AL, Funderburg NT, et al. 2012. J Leukoc Biol, 92: 1083-91.
2. Wang K, Wang JH, Baskaran H, et al. 2012. Head Neck Oncol, 4: 41.
3. Lee JK, Park YJ, Kum KY, et al. 2012. Int Endod J,
Background Defensins (alpha and beta) are cationic peptides with antimicrobial activity against Gram-negative and Gram-positive bacteria, fungi, and enveloped viruses. 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. ¥â-Defensins are expressed on some leukocytes and at epithelial surfaces. They contain a six-cysteine motif that forms three intra-molecular disulfide bonds. Because ¥â-defensins are 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. Additionally, they are not only have the ability to strengthen the innate immune system but can also enhance the adaptive immune system by chemotaxis of monocytes, T-lymphocytes, dendritic cells and mast cells to the infection site.

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