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Structure and Chemistry of Myosin Filament
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Dr Praveen Kumar Agrawal is teaching live on Unacademy Plus

Dr Praveen Kumar Agrawal
Top Ex - Faculty, Allen Kota Ph.D., NET, JRF, SRF, GATE. 21 Yrs Pre Medical Experience. Known for best explanation Youtuber with 3 M views.

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madam dhriti Vishwa yudh
Laxmi Karn
4 months ago
Ji jrur...mai bata dungi
Laxmi Karn
4 months ago
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amazing......thank u sir
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sir HMM and LMM kya hote h ?
Light-meromyosin (LMM) is the tail or backbone portion of the molecule, which intertwines with the tails of other myosin molecules to form a thick filament. Heavy-meromyosin (HMM) consists of two subfragments: S-1 and S-2. The S-2 portion of HMM projects out at an angle from LMM, and the S-1 portion is the globular head that can bind to actin. S-1 and S-2 together are also termed a myosin cross-bridge.
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  1. Course: Locomotion and Movement -2 Lesson -7:Structure and Chemistry of Myosin filaments DR. P. K. AGRAWAL M.Sc, PH.D., CSIR NET (JRF), SRF, GATE, FIAZ 20 Years of Pre-medical teaching experience Ex Faculty, Allen Career Institute, Kota Watch my Live Classes on Unacademy Plus


  2. STRUCTURE OF A MYOSIN FILAMENT Myosin filaments are thick and dark coloured filaments. .A myosin filament is a thick filament. It is composed of multiple myosin molecules, about 200 in number. Each has a molecular weight of about 4,80,o00. The myosin molecule is comprised of six polypeptide chains 2 heavy (each with Mol. Wt. 2,00,000) and 4 light chain (each with Mol. Wt. 20,000). . The two heavy chains are coiled around each other, forming double helix. . One end of each of these chains is projected outwardly and it is known as cross bridge. This end is folded into a globular protein mass, called myosin head. Each head consists of two lobes. Two light chains are also associated with each lobe Myosin head has an special ATPase activity i.e., it can cleave ATP to produce energy. . Each lobe of the head contain two regions - ATP binding site and Actin binding site. . There are many myosin molecules in a filament. So, man heads remain projected out from the surface of the filament.


  3. Structure of mysin filament and chemistry of myosin molecule Myosin Heads myosin filament Myosin molecules Hinge Myosfn Head Single myosin Molecule Shatt


  4. Smau Pol 2UDoo D each 2, o, ooo D Aetin bindiny ATP binding ShsoKe Hinge


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