RING1B (D22F2) XP(R) Rabbit mA

2D Gel Electrophoresis（图）

of each component.2D gel electrophoresis is generally used as a component of proteomics and is the step used for the isolation of proteins for further characterisation by mass spectroscopy. In the lab this technique is used for 2 main purposes, firstly for the large

R环 R-loop

指在 DNA双链之一部分，由与其互补的 RNA与之结合而产生的核酸分子的环形结构。为与由 DNA而成的 D环相对应的名称。因 RNA、 DNA杂合的双链比 DNA双链稳定，所以在比 DNA的双链开始分开时稍高的温度下， RNA分子仍与 DNA的互补部分形成稳定的双链。即如图 A所示， RNA与具同一性质的 DNA部分置换，形成 R环。在基因 DNA具有外显子 -内含子（ Exons－ introns）结构时，则如图 B所示只在内含子部分的 DNA以双链环残存着，产生与 Excons数相应

2D Gel Electrophoresis

of each component. 2D gel electrophoresis is generally used as a component of proteomics and is the step used for the isolation of proteins for further characterisation by mass spectroscopy. In the lab this technique is used for 2 main purposes, firstly