Protein Blotting: Immunoblotting

Protein Blotting: Immunoblotting
复制标题

蛋白质印迹:免疫印迹

DOI:
10.1002/9780470089941.et0803s12
复制
发表时间:
2016
期刊:
Current Protocols Essential Laboratory Techniques
影响因子:
--
通讯作者:
S. Gallagher
S. Gallagher
中科院分区:
--
文献类型:
--
作者:
Duojiao Ni;Peng Xu;Diviya Sabanayagam;S. Gallagher

文献摘要

参考文献

被引文献

相似文献

免疫印迹(也称为蛋白质印迹)使用抗体来探测与膜结合的样品中的特定蛋白质。通常,首先通过电泳(例如 SDS PAGE)对蛋白质样品进行大小分离。然而,用于特定蛋白质检测的抗体受到聚丙烯酰胺凝胶的限制,为了使分离的蛋白质易于接近,需要将蛋白质移出凝胶并结合到长方形的 PVDF 或硝酸纤维素膜片上。专用印迹设备通过电泳将带负电的蛋白质从凝胶转移到膜上。当蛋白质移出凝胶时,硝化纤维素或 PVDF 膜与蛋白质结合,在膜表面上产生原始蛋白质凝胶分离的精确复制品。然后封闭膜以防止任何非特异性蛋白质结合,并通过特异性抗体可视化以检测特定蛋白质的存在或不存在。免疫印迹的应用有很多,包括抗体表征、诊断、基因表达和翻译后修饰分析。 © 2016 John Wiley & Sons, Inc. 版权所有
Immunoblotting (also referred to as western blotting) uses antibodies to probe for a specific protein in a sample bound to a membrane. Typically, a protein sample is first size separated via electrophoresis (e.g., SDS PAGE). However, antibodies used for specific protein detection are restricted by the polyacrylamide gel and, to make the separated proteins accessible, the proteins need to be moved out of the gel and bound to a rectangular sheet of PVDF or nitrocellulose membrane. Specialized blotting equipment electrophoretically transfers the negatively charged proteins from the gel onto the membrane. The nitrocellulose or PVDF membrane binds the proteins as they move out of the gel, producing an exact replica, on the membrane surface, of the original protein gel separation. The membrane is then blocked to prevent any nonspecific protein binding and visualized by specific antibodies to detect the presence or absence of a particular protein. Applications of immunoblotting are many, and include antibody characterization, diagnostics, gene expression, and post‐translational modification analysis. © 2016 by John Wiley & Sons, Inc.
DOI: 10.3791/51149
发表时间: 2014-02-05
期刊: Journal of visualized experiments : JoVE
影响因子: --
作者:
Silva JM;McMahon M
通讯作者: McMahon M
DOI: 10.1016/0003-2697(84)90320-8
发表时间: 1984-01-01
影响因子: 2.9
作者:
BLAKE, MS;JOHNSTON, KH;GOTSCHLICH, EC
通讯作者: GOTSCHLICH, EC
化学发光试剂的稀释可降低蛋白质印迹的背景噪音。
DOI: --
发表时间: 1995
期刊: BioTechniques.
影响因子: --
作者:
Pampori,NA;Pampori,MK;Shapiro,BH
通讯作者: Shapiro,BH