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價格：電議
所在地：上海
型號：
更新時間：2012-08-24
瀏覽次數：2280
公司地址：上海市徐匯區石龍路345弄7號樓401室
唐小姐(女士)
Streptavidin is a tetrameric protein composed of identic subunits. Each subunit binds one biotin molecule with a KD of ~1x10-15 M. The preparation contains an N- and C-terminal shortened variant (core streptavidin) with improved properties concerning homogeneity, solubility, resistance towards proteolytic degradation and accessibility of the biotin binding pocket as compared to native streptavidin.
Form Lyophilized in 10 mM potassium phosphate buffer pH 6.5
MW per tetramer ~53 000
Extinction coefficient per subunit ε280 = 41326 M-1 cm-1
Specific activity > 17 U/mg (one unit binds 1 µg D-biotin)
Purity > 95 % as estimated by SDS-PAGE
Proteolytic activity < 10-3 U/mg protein (Azocoll, 25 °C, 24 h, pH 8.0)
Reconstitution Dissolve with water
Storage (lyophilized) -20 °C
Stability (lyophilized) 2 years after shipping
Storage (dissolved) 4 °C; for longer storage in dissolved form add 1 mM EDTA and/or 0.02 % NaN3 or pass the solution through a sterile filter
Shipment Room temperature
免責聲明：以上所展示的[ vector SA-5000 1 mg-Streptavidin]信息由會員[上海浩然生物技術有限公司]自行提供，內容的真實性、準確性和合法性由發布會員負責。
