The Peripheral membrane proteins are less strongly bound to the lipid bilayer than integral membrane proteins and can be readily erased through washing the membranes with a solution of high ionic strength like 1 M NaCl and high pH. These type of processes leave the lipid bilayer intact but disrupt the hydrogen and ionic bond connections which hold the peripheral proteins on the surface of the membrane. No element of a peripheral protein do with the hydrophobic core of the bilayer. The Peripheral membrane proteins can be recognized either on the outer or the inner surface of the bilayer and can be related with the membrane by noncovalent interactions with either the lipid headgroups and/or other proteins in the membrane. Once deleted from the membrane and peripheral proteins behave as water-soluble globular proteins and can be purified as like.