Fig. 1: Over 20% more yield obtained with PureCube Ni-NTA Agarose. SDS-PAGE of GFP expressed in E. coli and purified in gravity columns with PureCube Ni-NTA Agarose and Ni-NTA resin from Competitor Q. 80 mg/mL protein yield was obtained with PureCube Ni-NTA Agarose (E1–E4, Cube) compared to 65 and 48 mg/mL, respectively, with the widely used alternative resins G and Q (E1–E4, Competitor G / Competitor Q).
Cube Biotech
蛋白结合能力
> 80mg/mL
2. 优越的DTT和EDTA稳定性
Fig. 2: NTA is robust in the presence of reducing and chelating agents. GFP-His was purified on gravity columns containing PureCube Ni-NTA Agarose after exposing the resin for 1 h to 3 concentrations of DTT or EDTA. NTA exhibits a shallow decay rate in binding capacity.
PureCube Ni-NTA琼脂糖在DTT和EDTA存在下非常坚实,在稳定性测试中,将PureCube Ni-NTA琼脂糖置于DTT与EDTA浓度逐渐升高的环境中处理1小时。再用处理过的凝胶在重力层析柱中纯化大肠杆菌表达的GFP-His,凝胶的蛋白结合能力因存在DTT与EDTA而下降,但是衰减率平缓,即使在1.5 mM EDTA,凝胶依然具有其大结合能力的54%。
Cube Biotech
DTT稳定性
<10mM
EDTA稳定性
<1.5mM
产品特性:
应用
Specific binding and purification of 6x his-tagged proteins
特异性
Affinity to His-tagged proteins
结合能力
>80?mg/mL
Bead Ligand
Ni-NTA
粒径大小
40 μm
螯合剂稳定性
Stable in buffer containing 10 mM DTT and 1 mM EDTA
保存
Delivered as a 50?% suspension
所需试剂耗材
Lysis Buffer
Wash Buffer
Elution Buffer
Ice bath
Refrigerated centrifuge for 50?mL tube (min 10,000 x g)
50?mL centrifuge tube
Micropipettor and Micropipetting tips
Disposable gravity flow columns with capped bottom outlet, 2 ml
?pH meter
End-over-end shaker
SDS-PAGE buffers, reagents and equipment Optional: Western Blot reagents and equipment