BIOC 4580 Lecture Notes - Lecture 19: Monomer, Micelle, Taxus Brevifolia
14 Mar 2017
School
Department
Course
Professor
Document Summary
Today"s material not covered very well in textbook. The biogenesis, shape, structure, and dynamics of cellular membranes are all facilitated by cytoskeletal proteins that can interact with peripheral and/or integral membrane proteins. The 3 major cytoskeletal protein families are microfilaments, microtubules, and intermediate filaments, all with a variety of accessory proteins. Fluorescence microscopy is a major tool for visualization of cytoskeletal dynamics in living cells. An interlocking 3-d scaffolding that extends throughout the cytosol and interfacing with the pm. Modulation of cell shape and cell movement. The 3 families of cytoskeletal proteins vary in composition and thickness: microfilaments. Actin (eukaryotic protein; there is a bacterial homologue mreb) Actin ~10% of total eukaryotic cell protein. Mfs bound to specific membrane proteins lie just beneath & parallel to pm cortex is underlying layer of cytoplasm. Major property is the cortical actin, just under the pm, maintaining cell structure & shape. Pseudopodia formed by actin pushing the membrane forward.
