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kuaile1010

新虫 (小有名气)

[求助] 蛋白冻存

购买的蛋白的产品说明书中保存方法如下,那分装保存在 -20°C时,我还需要添加甘油之类的吗?顺便问一下,大家冻存蛋白是用哪一种冻存管感觉比较好?
Reconstitution
Centrifuge the vial prior to opening. Reconstitute in sterile PBS, pH 7.4 to a concentration of 50 μg/mL. Do not vortex. This solution can be stored at 2-8°C for up to 1 month. For extended storage, it is recommended to store at -20°C.
Physical form
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4. Generally 5-8% Mannitol or trehalose is added as a protectant before lyophilization.
性质
recombinant          expressed in HEK 293 cells
assay          ≥90% (SDS-PAGE)
form          lyophilized
mol wt          calculated mol wt 50.1 kDa
        observed mol wt 66-90 kDa by SDS-PAGE (DTT-reduced. Asp68 & Tyr19 is the predicted N-terminus .)
impurities          <1 EU/μg endotoxin (LAL test)
conjugate          6-His tagged (C-terminus)
UniProt accession no.          O15123
shipped in          wet ice
storage temp.          −20°C
Gene Information          human ... ANGPT1(285)
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