[Alpha-actinin in the electric organ of Electrophorus electricus, L].

We have identified Alpha-actinin from the electric organ of the Electrophorus electricus, L. It was analysed by polyacrylamide gel electrophoresis, and identified by immunoblotting. This protein was also found in a membrane fraction of the electric organ enriched with components of the cytoskeleton. Our results suggest that this protein might play a role either in the organization of the microfilaments or its interactions with the membrane to maintain a polarized electrocyte.