BIO 208 Lecture Notes - Lecture 19: Troponin C, Troponin T, Globular Protein
Document Summary
Q6: tropomyosin wraps itself around which other muscle element a. f-actin, b. myosin, c. z-line, d. titin, e. h-band. Major players of muscle contraction: thick laments (myosin laments, thin laments. Troponin complex (troponin i, troponin t, troponin c) Myosin (thick laments: one myosin lament is composed of: 500 myosin molecules for a total length of 1. 6 mm long. Each myosin molecule consists of a pair of myosin subunits twisted around each other: structure of myosin molecules: Double helix tail with 2 free heads. Heads are the active sites for binding atp and actin. Thin filament complex: f-actin (major component, long, twisted double helix of globular proteins. Other end parallel to other actin laments and the myosin lament. So how do all these molecules interact to create a contraction (i. e. generate force): the sliding lament mechanism states that the contraction of a muscle cell occurs as the thin. Atp: used in 3 places during muscle contraction.
