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Lecture 16-07web - L312/Spring 2006 Lecture 16 Drummond...

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L312/Spring 2006 Lecture 16 Drummond March 6 For today: Focus on Ch. 17 Actin and myosin, movement 595-607 Contribution of ATP to kinesin/myosin motor function What drives the process? Revisit today Thursday: Exam II! Do we need another review session today/tonight? Today: Finish consideration of actin filaments last time: size, composition, contribution to the cell structure and movement today, focus on: lamellipodia, filopodia, ARPs (actin related proteins) integrins capping proteins, depolymerizing proteins, Questions: How is the signal to move transmitted to the inside of the cell? How can actin be used to move the cell? Why are integrins essential for cell migration? What is the role of myosin in movement? What is the structure of muscle fibers and how does structure relate to function? You are responsible for the role of calcium in muscle cell contraction--how does a rise in calcium mediate muscle contraction?
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Re-thinking the role of proteins in cellular structure and function Intermediate filaments, Microtubules and actin as reversible , modular , remodelable fibers for structure, strength, transport and organization
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