There are two type representation of amino acid structure

1. By Fischer’s convention L and D

2. By absolute configuration RS System

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The length of the myosin II neck domain determines the rate of movement.

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Myosin V

Two heads but does not assemble into filaments

Large and processive

Function- Organelle transport

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Myosin II

Two heads and assembles into bipolar filaments

Small and non-processive

Function- Contraction

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Myosin I

single head domain

Function- Membrane association, endocytosis

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Three classes of myosins:

Myosin I

Myosin II

Myosin V

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The first myosin discovered

Myosin II, was isolated from skeletal muscle.