[Surface membrane in skeletal muscle : current biochemical approach (author's transl)]

Three kinds of membranes were found to be present in the skeletal muscle : the plasma membrane, the T-System membrane and the Sarcoplasmic Reticulum membrane. Although they are in continuity, they have quite different properties. Isolation of Sarcoplasmic Reticulum membrane is technically easy. On the other hand, the plasma and T-System membrane isolation has been found to be more difficult. The various methods of purification of these last two components of the muscle fiber are reviewed as well as the biochemical markers allowing their characterization.