Effect of polymer charge on functional reconstitution of membrane proteins in polymer nanodiscs.

Although there is a growing interest in using polymer lipid-nanodiscs, the polymer charge poses limitations for studies on membrane proteins. Here, we demonstrate the functional reconstitution of a large soluble-domain containing positively-charged approximate to 57 kDa cytochrome-P450 and negatively-charged approximate to 16 kDa cytochrome-b5 in lipid-nanodiscs, and the role of the polymer charge for high-resolution studies on membrane proteins.