Description: Recombinant Human DEFB104A/DEFB104B Protein is produced by E. coli expression system and the target gene encoding Glu23-Pro72 is expressed. Form: Lyophilized from a 0.2 μM filtered solution of 20mM PB, 130mM NaCl, pH 7.4 Gene Symbol: DEFB104A; DEFB104B Alternative Names: DEFB104; DEFB4; Beta-defensin 104; Beta-defensin 4; BD-4; DEFB-4; hBD-4; Defensin beta 104Entrez Gene (Human): 140596; 503618SwissProt (Human): Q8WTQ1Purity : Greater than 95% as determined by SEC-HPLC and reducing SDS-PAGE.Chemical Structure : EFELDRICGY GTARCRKKCR SQEYRIGRCP NTYACCLRKW DESLLNRTKP Directions for Use : Always centrifuge tubes before opening. Do not mix by vortex or pipetting. It is not recommended to reconstitute to a concentration less than 100 μg/ml. Dissolve the lyophilized protein in 1X PBS. Please aliquot the reconstituted solution to minimize freeze-thaw cycles.Quality Control : Endotoxin: Less than 0.1 ng/μg (1 IEU/μg) as determined by LAL test.Storage/Stability : Lyophilized protein should be stored at -20°C, though stable at room temperature for 3 weeks. Reconstituted protein solution can be stored at 2-8°C for 2-7 days. Aliquots of reconstituted samples are stable at -20°C for 3 months.