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價(jià)格：電議
所在地：上海
型號(hào)：
更新時(shí)間：2012-08-24
瀏覽次數(shù)：2296
公司地址：上海市徐匯區(qū)石龍路345弄7號(hào)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(zé)聲明：以上所展示的[ vector SA-5000 1 mg-Streptavidin]信息由會(huì)員[上海浩然生物技術(shù)有限公司]自行提供，內(nèi)容的真實(shí)性、準(zhǔn)確性和合法性由發(fā)布會(huì)員負(fù)責(zé)。
