Immunochemical studies on the major intrinsic polypeptides from human lens membrane.

Cell membranes from the human lens contain two major polypeptides with molecular weights near 26,000 and 22,000. These two species have been isolated in a highly purified state and purified by means of an antiserum against the 26,000 dalton membrane polypeptide from bovine lens. Immunochemical data are presented that establish a clear structural relationship between the two polypeptides and are consistent with the hypothesis that the 22,000 dalton species derived proteolytically from the 26,000 dalton species.