NATS 1610 Lecture Notes - Lecture 22: Glycogen, Myofibril, Foodborne Illness
1 Mar 2018
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These lecture notes - refer only to those topics in the above listed reference thatare covered in these lecture notes. The various animation links within these notes are important. Web link with many resources, including web tutorials (not all may be relevant to this course) http://wps. prenhall. com/esm_goodenough_boh_2/24/6206/1588833. cw/index. html. Also check other study materials in this link. Other material may be posted in the near future. Actin: g-actin contains an active site that binds myosin fibrous actin (f-actin) 300 - 400 globular actin (gactin) forming actin helix. Tropomyosin: covers the active sites on g-actin, prevents actin-myosin interaction, must move for contraction to occur. Troponin - a complex of 3 parts: one binds to tropomyosin, one to g-actin, one to calcium. Cross-bridge interaction between actin & myosin brings about muscle contraction by means of the sliding filament mechanism. * summary animation muscle contraction: 10 http://highered. mcgraw-hill. com/sites/0072437316/student_view0/chapter42/animations. html# Atp-powered cross-bridge cycling : atp binds to myosin head, myosin is energized.
