Paramyosin-Struktur und Sperrtonus, Untersuchungen am Byssusretraktor vonMytilus edulis mit dem Interferenz-Kontrast-Mikroskop

Summary

Surviving muscle fibres of a molluscan smooth muscle (ABRM) in ‘catch’ exhibit a characteristic pattern of longitudinal stripes when examined with theNomarski technique (Differential interference contrast). The pattern appears to be due to aggregated paramyosin-filaments; it disappears after abolishing the catch with 5-hydroxytryptamine or — in freeze-dried preparation — after raising the pH of the ATP-salt solution.