Myosins from plants |
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Authors: | K Yamamoto S Hamada T Kashiyama |
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Institution: | (1) Department of Biology, Faculty of Science, Chiba University, Yayoicho, Inage-ku, Chiba 263 (Japan), Fax +81 43 290 2809, e-mail: yamamoto@bio.s.chiba-u.ac.jp , JP |
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Abstract: | Molecular cloning and sequence analysis of myosin genes from Arabidopsis thaliana and electron microscopic observation of a myosin from characean alga have revealed that overall structure of plant unconventional
myosins is similar to that of the class V myosins. These plant unconventional myosins have two heads, a coiled-coil tail of
varied length and a globular tail piece at the end. The tail piece is probably a site for membrane interaction. Characean
myosin is of special interest because it can translocate actin filaments at a velocity several times faster than muscle myosin,
which must have evolved to support the quick movement of animals in the struggle for their lives. |
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Keywords: | , Plant, myosin, myosin family, unconventional myosin, motor protein, cytoplasmic streaming, sliding velocity, |
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