3-[3-(胆酰胺丙基)二甲基铵]-1-丙磺酸内盐(CHAPS)

CHAPS 是一种用于膜生物化学的非变性两性离子洗涤剂。

可用于溶解膜蛋白以及打断蛋白-蛋白相互作用。CHAPS 具有低胶束分子量 (6,150) 和高临界胶束浓度 (6-10mM)，因此可通过透析从样品中除去。它也适合在等电聚焦和二维电泳中用于溶解蛋白质。CHAPS 常用于非变性（无尿素）等电聚焦，已发现它对某些亚细胞制备物和植物蛋白能够得出优异的分辨率。通常将介于 2-4% (w/v) 间的浓度用于等电聚焦凝胶。

CHAPS is a non-denaturing, zwitterionic detergent derived from cholic acid. CHAPS is often used as a detergent in the solubilization and purification of membrane proteins for several advantageous reasons. CHAPS detergent is non-denaturing to membrane proteins, can solubilize proteins, disaggregate protein-protein interactions and is electrically neutral. CHAPS is also useful in ion exchange chromatography and isoelectric focusing as it is zwitterionic and does not exhibit a net charge between pH 2 to 12. The critical micelle concentration of CHAPS is 6-10mM.
A non-denaturing, zwitterionic detergent for membrane proteins

Application：

Buffer; zwitterionic nondenaturing detergent for solubilizing membrane proteins CHAPS is used in the laboratory to dissolve biological macromolecules such as proteins. It acts as a non-denaturing solvent used in purification of membrane proteins. It is also useful in conjunction with nonionic detergents like Triton X-100. Further, it is used as a non-denaturing zwitterionic detergent for membrane biochemistry.