β-Defensin 4A is a membrane-active cationic peptide that functions in inflammation and innate immune responses. There are at least 30 β-Defensins, which are distinguished from ?-Defensins by the connectivity pattern of their three intermolecular disulfide bonds. Members of the Defensin family are highly similar in protein sequence. This gene encodes Defensin, DEFB4;, which has broad-spectrum antimicrobial activity and may play an important role in innate epithelial defense. They are highly expressed in skin and tonsils, and to a lesser extent in trachea, uterus, kidney, thymus, adenoid, pharynx and tongue. β-Defensin 4A has low expression in salivary gland, bone marrow, colon, stomach, polyp and larynx. No expression in small intestine. The 45 amino acid mature human BD3 shares 38% and 33% amino acid sequence identity with mouse and rat BD3, respectively.
Product Name:
Alpha-Defensin 4A/DEFB4A Recombinant Protein (RPES3528)
Recombinant Human beta-Defensin 4A is produced by our E.coli expression system and the target gene encoding Gly24-Pro64 is expressed.
Purity:
> 95 % as determined by reducing SDS-PAGE.
Mol Mass:
4.3 kDa
AP Mol Mass:
9 kDa
Formulation:
Lyophilized from a 0.2 µm filtered solution of 20mM PB, 130mM NaCl, pH 7.4.
Shipping:
This product is provided as lyophilized powder which is shipped with ice packs.
Stability and Storage:
Lyophilized proteins are stable for up to 12 months when stored at -20 to -80°C. Reconstituted protein solution can be stored at 4-8°C for 2-7 days. Aliquots of reconstituted samples are stable at < -20°C for 3 months.
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