A researcher isolated the plasma membrane from animal cells and them put them in a solution that contains chemical to stabilised the membranes. When he added a small amount of salt solution in it, he discovered that although the membranes seemed intact, the amount of protein in the stabilising solution had increased. These new proteins in the stabilising solution were probably

Question

A researcher isolated the plasma membrane from animal cells and them put them in a solution that contains chemical to stabilised the membranes. When he added a small amount of salt solution in it, he discovered that although the membranes seemed intact, the amount of protein in the stabilising solution had increased. These new proteins in the stabilising solution were probably (A) integral proteins (B) lipid-anchored proteins (C) trimeric G protein (D) peripheral protein

Tardigrade Admin · Accepted Answer

Peripheral proteins are separated by mild treatment with high ionic strength or with metal chelating agents and are soluble in aqueous solution as well as they are usually free of lipids. For example: spectrin.