Nickel Agarose Resin is available in bulk or in prepacked columns. Ithas a binding capacity of >25 mg/ml with approximately 60 kDaprotein. In addition, it allows for purification of proteins undernative or denaturing conditions. GoldBio Nickel Agarose works very wellwith the His-Tag Buffer Set.
IDA cross-linked Agarose resin consists of iminodiacetic acid groups ligated by stable ether linkages via a spacer arm. IDA is a tridentate chelating agent, covalently coupled to cross-linked agarose beads. This resin is loaded with Ni2+. The resulting, ready-to-use resin is ideal for rapid purifications of His-tagged proteins.
Affinity Chromatography is based on the interaction between certain superficial protein residues (histidines, cysteines and to a lesser extent tryptophans), with transition metal cations, forming chelates.
Nickel agarose resin is suitable for use with FPLC, but with pressures no more than 20 kPa. Too much pressure or too fast of a flow rate will result in diminished performance.
Storage/Handling: Store at 4°C. Do NOT freeze.
Note: Some discoloration of the Nickel IDA resin has been observed in reaction with low levels of reducing agents such as DTT. However, the resin remains fully functional even at concentrations as high as 5mM DTT.
★活体技术荧光检测荧光蛋白标记适用于标记细胞、病毒、基因等，通常使用的是 GFP、EGFP、RFP（DsRed）等；荧光染料标记适用于标记抗体、多肽、小分子药物等；常用的有 Cy3、Cy5、Cy5.5 及 Cy7量子点标记（新的标记方法）适用于标记肿瘤，主要应用在活细胞实时动态荧光观察与成像；量子点（quantum dot) 是一种能发射荧光的半导体纳米微晶体，外观恰似一极小的点状物。量子点荧光比有机荧光染料的发射光强的 20 倍，稳定性强 100 倍以上，具有荧光发光光谱较窄、量子产率高、不易漂白、激发光谱宽、颜色可调，并且光化学稳定性高，不易分解等诸多优点。
