RFP-rProtein APDF
Catalog Number:
E1RA1-050Amount:
500μg/500μlBackground:
The unique, high quality recombinant red fluorescence Protein (RFP)-rProtein A are produced in E. coli, and purified using multiple chromatographic steps (not affinity purified with human IgG). RFP-rProtein A bind to most mammalian immunoglobulins in their Fc binding domains and therefore are ideal for immunofluorescence staining. The genetically engineered protein was expressed and purified from transformed E. coli containing only the IgG binding regions and have 6X His-tag on their N-terminus. Other domains such as cell wall binding region, albumin binding region and other non-specific binding regions have been eliminated from all these proteins to ensure the maximum specific IgG binding and maximal fluorescence.Form of Antibody:
Liquid. The product is 1 mg/ml in 10 mM Phosphate buffered saline, pH 7.4 containing, 10% glycerol and 0.1% sodium azide as preservative.Source:
Recombinant expressed in E. coliPurity:
>98% by SDS-PAGE and HPLCEndotoxin:
< 0.05="">IgG Binding:
>95%Bioburden:
No organisms detectedSpecificity/Sensitivity:
Under optimal conditions, 1 mg RFP-rProtein A will bind approximately 5 mg IgG. Optimal binding of RFP-rProtein A to antibodies occurs at pH 5.0 to 8.0 and can be eluted over a pH range of 2.5 to 3.0.Applications:
The protein is suitable as control reagent for RFP expression studies or as labeling reagent. Applications include: Flow cytometers, fluorescence microscopy, and microinjection, antibody purification, etc. at 1:100 dilution. Maximum absorption wavelength at 557 nm and emission wavelength at 585 nm.Storage/Stability:
Store at -20°C. -80°C for long-term storage. Avoid exposure to light. Avoid repeated freezing and thawing.Immunofluorescence staining of methanol-fixed HeLa cells using Synaptotagmin (Ab-309) Antibody (E021292) (Left) and PLC-γ1 (phospho-Tyr771) Antibody (E011523) (Right) consequently detected with RFP-rProtein A (Red).
Price:
260$

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想用RNAiMAX或者lipo2000转染siRNA,但是看了下转染试剂的说明书和锐博的siRNA说明书,觉得分别对siRNA的用量描述差别挺大的呀,不知道到底该参考哪个呢。
以24孔板为例在siRNA说明书中写到,siRNA终浓度是50nM的话,加入浓度为20μM的siRNA1.25ul,每孔体积是500ul,那这样的话,每孔最终siRNA的量是25pmol。
但是在RNAiMAX或者是lipo2000说明书中,一个写的每孔siRNA用量是5pmol,一个是500ng,这与siRNA厂家所提供的量相差也太多了吧。
到底该看哪一个呢。
ps.一旦siRNA的量和体积确定下来之后,转染试剂的量和siRNA1:1的加就可以了吗?
请各位大神解答。
1.siRNA说明书中的用量,红线圈出
2.RNAIMAX说明书中siRNA的用量。
3.lipo2000说明书中siRNA用量
有战友对比过罗氏X-tremeGENEDNATransfectionReagent和lipofectamine3000的优劣吗?求解答
EntransterTM-R4000是英格恩生物(EngreenBiosystem)最新研发合成的针对siRNA、microRNA、mimic、inhibitor、mRNA和shRNA等RNA的转染试剂。EntransterTM-R4000不仅可以转染小RNA,而且针对mRNA等长链RNA优化。由于纳米技术的应用,EntransterTM-R4000能做到高达90%的转染效率和60-90%的沉默效率,对难转染细胞和原代细胞也非常适用。
先附上一篇英格恩生物RNA转染试剂转染mir-346至Jurkat细胞研究甲状腺的文献,以供参考。
RNA转染试剂转染Mir-346至Jurkat细胞研究甲状腺.pdf(5947.72k)

