[The role of membrane protein SH-groups in regulating ouabain and bungarotoxin binding in the crab nerve].

Structural alterations in plasma membrane proteins promoting transition from inactive forms of Na-pump and acetylcholine receptor to active ones during propagation of rhythmic excitation were examined. The role of SH-groups of the nerve (fibre and glial cell) plasma membrane proteins in providing regulation of the pump and receptor state by generalized alterations in the membrane structure is discussed.