LAGUNA DESIGN / SCIENCE PHOTO LIBRARY LAGUNA DESIGN / SCIENCE PHOTO LIBRARY
Molecular motor protein. Computer model showing the structure of a two-headed motor protein, Myosin V. Motor proteins convert chemical energy into mechanical movements in response to specific chemical stimuli. Myosins are a large family of motor proteins that are responsible for muscle contraction in eukaryotic tissues. Most myosin molecules are composed of a head, neck, and tail domain. Each domain serves a specific purpose in the action of myosin on actin filaments in muscles to bring about contractions.
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