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Actin and myosin are contractile proteins found within muscle fiber. If you look at a muscle fiber under a microscope it is made up of several repeating units called sarcomeres that run along the length of the muscle fiber. Proteins actin and myosin are found in the sarcomeres in different locations.
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∙ 12y ago
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∙ 9y agoActin can be found in the eukaryotic cytoskeleton. Actin is a protein that goes into making the cells of the cytoskeleton.
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∙ 11y agofound in sarcomere ( muscle protein making up thin filaments)
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∙ 13y agoIn the cytoskeleton of a cell
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What contains actin filaments?
Microfilaments contain actin filaments. They are the thinnest filaments of the cytoskeleton, which is a structure found in the cytoplasm of eukaryotic cells.
Where are actin filaments only located?
in the A band
What are two myofilaments that slide past one another to allow muscle cells to contract?
Actin and Myosin
What part of the cytoskeleton is made of actin subunits?
Micro filaments
Which of the following become connected by myosin cross-bridges during muscle contraction A) thin filaments and thick filaments B) thin filaments and t-tubules C) thick filaments and titin filame?
Interactions between actin and myosin filaments of the sarcomere are responsible for muscle contractions. The I bands contain only thin (actin) filaments, whereas the A bands contain thick (myosin) filaments.
What contains actin filaments?
Microfilaments contain actin filaments. They are the thinnest filaments of the cytoskeleton, which is a structure found in the cytoplasm of eukaryotic cells.
What are the names of protein filaments in a muscle fiber?
Actin Filaments
What are 3 protein fibers found in cytoskeleton?
1. A network of microtubules mainly in ectoplasm2. cytoplasmic network of microfilaments (actin filaments)3. Intermidiate fillamentsthe main protein of cytoskeleton are tubulin, actin, and myosin.
What protein makes up the thick filaments of myofibrils?
Myosin makes up the THICK filaments, and actin makes up the thin filaments of myofibrils.
What are the filaments of a dynamic skeleton?
Actin filaments
Actin makes up cytoskeleton fibers called?
The actin that makes up cytoskeleton fibers are called microfilaments. They are the thinnest filaments of the cytoskeleton a structure found in the cytoplasm of eukaryotic cells.Ê
What contains filament?
Microfilaments contain actin filaments. They are the thinnest filaments of the cytoskeleton, which is a structure found in the cytoplasm of eukaryotic cells.
What would enable you to identify the plus end of actin filaments?
add radiolabeled actin subunits to a mixture of actin filaments in which conditions are favorable for polymerization.
Do actin filaments have membranes?
No. They are polymers of actin that form 'filaments'. Membranes in eukaryotic cells are composed of a 'lipid bilayer'
What are the thin filaments in striated muscle?
Actino myosin is the thin protein found in muscles.
What do actin filaments support?
the cytoskeleton
The thick filaments of muscle fibers are composed of what?
Myosin
