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Description
BD-1 Protein, HumanProduct Specification Species Human Synonyms Beta defensin 1,Defensin beta1 Accession P60022 Amino Acid Sequence Gly22 Lys68 Expression System E. coli Molecular Weight Approximately 12. 6 kDa, a single non glycosylated polypeptide chain containing 111 amino acids. Purity 98% by SDS PAGE or HPLC. Conjugation Unconjugated Tag No Tag Physical Appearance Lyophilized powder Storage Buffer PBS, pH 7. 4. Reconstitution Before use this product, please read
Product Specification
| Species | Human |
| Synonyms | Beta-defensin 1,Defensin beta1 |
| Accession | P60022 |
| Amino Acid Sequence | Gly22-Lys68 |
| Expression System | E.coli |
| Molecular Weight | Approximately 12.6 kDa, a single non-glycosylated polypeptide chain containing 111 amino acids. |
| Purity | ＞98% by SDS-PAGE or HPLC. |
| Conjugation | Unconjugated |
| Tag | No Tag |
| Physical Appearance | Lyophilized powder |
| Storage Buffer | PBS, pH 7.4. |
| Reconstitution | Before use this product, please read the direction below carefully. This vial must be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in a 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. |
| Stability & Storage | For long term storage, the product should be stored ≤ -20℃. |
Background
Defensins (alpha and beta) are cationic peptides with antimicrobial activity against Gram-negative and Gram-positive bacteria, fungi, and enveloped viruses. They are 2-6kDa 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. 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. The β-defensin proteins are expressed as the C-terminal portion of precursors and are released by proteolytic cleavage of a signal sequence and, in the case of BD-1 (36 a.a.) , a propeptide region. Beta-defensin 1 may play a role in the pathogenesis of severe sepsis. Variation in human Beta Defensin-1 contributes to asthma diagnosis, with apparent gender-specific effects. Variation in human β-defensins 1 contributes to asthma diagnosis, with apparent gender-specific effects. Recombinant Human BD-1 is a 5.1kDa non-glycosylated protein containing 47 amino acid.
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