| Abstract: | Nuclear membranes and plasma membranes of chicken erythrocytes were tested for some enzyme activities and polypeptide content. Both membranes show ATPase and NADH cytochrome c reductase activities, which were higher for nuclear membrane preparations; besides the nuclear membrane ATPase is not stimulated by Na + K + ions. SDS solubilization of these membranes followed by separation using SDS polyacrylamide gel electrophoresis yields about 25 bands. Nuclear membranes and plasma membranes possess specific bands; some differences were seen when adult and embryonic membranes were compared. |
