L2

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5 Terms

1
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What is the basic structural organisation of all myosins?

One or two heavy chains forming the motor (head) domain plus several light chains bound to the neck region.

2
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What is the structure of myosin II ?

two head domains and two light chains per neck

only class that assemble into bipolarfilaments

<p><span><span>two head domains and two light chains per neck </span></span></p><p><span><span>only class that assemble into bipolarfilaments</span></span></p>
3
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What is the structure of myosin I ?

the only myosins to have a single head domain

some of these myosins associate directly with membranes through lipid interactions

<p><span><span>the only myosins to have a single head domain</span></span></p><p><span><span>some of these myosins associate directly with membranes through lipid interactions</span></span></p>
4
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what is the structure of myosin III ?

two head domains and six light chains per neck.

Bind specific receptors (brown box) on organelles, which they transport

<p><span><span>two head domains and six light chains per neck. </span></span></p><p><span><span>Bind specific receptors (brown box) on organelles, which they transport</span></span></p>
5
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what do all of these myosin classes have in common?

move toward the (+) end of actin filaments

- only myosin VI moves (cargo) towards (-) end of an actin filament