Name: Human β-Defensin 4A/DEFB4A Recombinant Protein

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

Expression host: E.coli

Sequence: Gly24-Pro64

Accesstion: O15263

Species: Human

Mol_Mass: 4.3 kDa

AP_Mol_Mass: 9 kDa

Tag: None

Purity: > 95 % as determined by reducing SDS-PAGE.

Endotoxin:

Storage: Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80℃. Reconstituted protein solution can be stored at 4-8℃ for 2-7 days. Aliquots of reconstituted samples are stable at

Shipping: This product is provided as lyophilized powder which is shipped with ice packs.

Formulation: Lyophilized from a 0.2 μm filtered solution of PBS, pH 7.4.Normally 5 % – 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization.Please refer to the specific buffer information in the printed manual.

Reconstitution: Please refer to the printed manual for detailed information.

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.

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