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Microtubule Microfilament and Intermediate Filament
>> YOUR LINK HERE: ___ http://youtube.com/watch?v=XqnUHR7_0u0
Difference between microtubules, microfilament and intermediate filaments - This lecture explains about the difference between microtubules, micro filaments and intermediate filaments. Microfilaments are fine, thread-like protein fibers, 3-6 nm in diameter. They are composed predominantly of a contractile protein called actin, which is the most abundant cellular protein. Microfilaments' association with the protein myosin is responsible for muscle contraction. Microfilaments can also carry out cellular movements including gliding, contraction, and cytokinesis. • Microtubules • Microtubules are cylindrical tubes, 20-25 nm in diameter. They are composed of subunits of the protein tubulin--these subunits are termed alpha and beta. Microtubules act as a scaffold to determine cell shape, and provide a set of tracks for cell organelles and vesicles to move on. Microtubules also form the spindle fibers for separating chromosomes during mitosis. When arranged in geometric patterns inside flagella and cilia, they are used for locomotion. • Intermediate Filaments • Intermediate filaments are about 10 nm diameter and provide tensile strength for the cell. • Examples of the cytoskeleton in epithelial cells • In the epithelial (skin) cells of the intestine, all three types of fibers are present. Microfilaments project into the villi, giving shape to the cell surface. Microtubules grow out of the centrosome to the cell periphery. Intermediate filaments connect adjacent cells through desmosomes. • For more information, log on to- • http://www.shomusbiology.com/ • Get Shomu's Biology DVD set here- • http://www.shomusbiology.com/dvd-store/ • Download the study materials here- • http://shomusbiology.com/bio-material... • Remember Shomu’s Biology is created to spread the knowledge of life science and biology by sharing all this free biology lectures video and animation presented by Suman Bhattacharjee in YouTube. All these tutorials are brought to you for free. Please subscribe to our channel so that we can grow together. You can check for any of the following services from Shomu’s Biology- • Buy Shomu’s Biology lecture DVD set- www.shomusbiology.com/dvd-store • Shomu’s Biology assignment services – www.shomusbiology.com/assignment -help • Join Online coaching for CSIR NET exam – www.shomusbiology.com/net-coaching • We are social. Find us on different sites here- • Our Website – www.shomusbiology.com • Facebook page- / shomusbiology • Twitter - / shomusbiology • SlideShare- www.slideshare.net/shomusbiology • Google plus- https://plus.google.com/1136485849827... • LinkedIn - / suman-bhattacharjee-2a051661 • Youtube- / thefunsuman • Thank you for watching
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