Recombinant Human DEFB4A

• Background:

  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 α-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 Alternative:

  Beta-Defensin 4A; Beta-Defensin 2; BD-2; hBD-2; Defensin; Beta 2; Skin-Antimicrobial Peptide 1; SAP1; DEFB4A; DEFB102; DEFB2; DEFB4; DEFB4B

• Accession Number:

  O15263

• Host:

  E.coli

• Endotoxin:

  <1 EU/µg as determined by LAL test.

• Purity:

  Greater than 95% as determined by reducing SDS-PAGE

• Form:

  Lyophilized

• Reconstitution:

  Always centrifuge tubes before opening.Do not mix by vortex or pipetting.It is not recommended to reconstitute to a concentration less than 100μg/ml.Dissolve the lyophilized protein in distilled water.Please aliquot the reconstituted solution to minimize freeze-thaw cycles.

• Molecular Weight:

  4.33 KDa

• Shipping Conditions:

  The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature listed below.

• Storage Conditions:

  Store at -70°C/-20°C, stable for 6 months after receipt.Store at ≤-70°C, stable for 3 months under sterile conditions after opening. Please minimize freeze-thaw cycles.

• Formulation:

  Lyophilized from a 0.2 μm filtered solution of PBS, pH 7.4.

• Construct:

  Recombinant Human Beta-Defensin 4A is produced by our E.coli expression system and the target gene encoding Gly24-Pro64 is expressed.

• Species:

  Human