1 October 2013 Genome-Wide Survey of Genes Encoding Muscle Proteins in the Pearl Oyster, Pinctada fucata
Daisuke Funabara, Daiki Watanabe, Nori Satoh, Satoshi Kanoh
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The mechanisms of contraction of molluscan striated and smooth muscles differ from those in vertebrates. Molluscan striated muscles adopt a myosin-linked regulation, unlike vertebrates. Smooth muscles in these species show a unique form of contraction, in which the tension is maintained for a long time with little energy consumption, called catch. The available gene information is insufficient to elucidate the mechanism of contraction of molluscan muscles at the molecular level. BLAST searching was thus used to annotate genes encoding proteins related to muscle contraction in the completely determined genome of the pearl oyster Pinctada fucata using partial nucleotide sequences obtained by 3′ RACE. We identified genes that encode components of the thick-filament, such as myosin heavy chain, myosin essential and regulatory light chains, paramyosin and twitchin; of the thin-filament, such as actin, tropomyosin, troponin-T, troponin-I, troponin-C and calponin; and the PKA catalytic subunit, which is a key player in the regulation of catch contraction. The analysis indicated that isoforms of myosin heavy chain, paramyosin, and calponin are produced by alternative splicing.

© 2013 Zoological Society of Japan
Daisuke Funabara, Daiki Watanabe, Nori Satoh, and Satoshi Kanoh "Genome-Wide Survey of Genes Encoding Muscle Proteins in the Pearl Oyster, Pinctada fucata," Zoological Science 30(10), 817-825, (1 October 2013). https://doi.org/10.2108/zsj.30.817
Received: 2 October 2012; Accepted: 1 March 2013; Published: 1 October 2013
adductor muscle
catch contraction
myosin heavy chain
myosin light chain
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