Description: Recombinant Human CST4 Protein is produced by mammalian expression system and the target gene encoding Ser21-Ala141 is expressed with a 6His tag at the C-terminus. Form: Lyophilized from a 0.2 μM filtered solution of 20mM MES, 150mM NaCl, pH 5.5. Gene Symbol: CST4 Alternative Names: Cystatin-S; Cystatin-4; Cystatin-SA-III; Salivary acidic protein 1Entrez Gene (Human): 1472SwissProt (Human): P01036Purity : Greater than 95% as determined by reducing SDS-PAGE.Chemical Structure : SSSKEENRII PGGIYDADLN DEWVQRALHF AISEYNKATE DEYYRRPLQV LRAREQTFGG VNYFFDVEVG RTICTKSQPN LDTCAFHEQP ELQKKQLCSF EIYEVPWEDR MSLVNSRCQE AVDHHHHHH 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.