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Molecular Characterization and Expression Pattern of Paramyosin in Larvae and Adults of Yesso Scallop

文献类型： 外文期刊

作者： Yang, Yumin 1 ; Zhao, Dan 2 ; Zhou, Liqing 2 ; Zhang, Tianshi 2 ; Liu, Zhihong 2 ; Wu, Biao 2 ; Yu, Tao 3 ; Zheng, Yanxin 3 ; Sun, Xiujun 2 ;

作者机构： 1.Zhejiang Ocean Univ, Fisheries Coll, Zhoushan 316022, Peoples R China

2.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Lab Marine Fisheries Sci & Food Prod Proc, Pilot Natl Lab Marine Sci & Technol, Qingdao 266071, Peoples R China

3.Chinese Acad Fishery Sci, Changdao Enhancement & Expt Stn, Yantai 265800, Peoples R China

关键词： scallops; smooth adductor muscle; paramyosin; gene expression; whole-mount in situ hybridization

期刊名称：BIOLOGY-BASEL （ 影响因子：5.168； ）

ISSN：

年卷期： 2022 年 11 卷 3 期

页码：

收录情况： SCI

摘要： Simple Summary Paramyosin is an important myofibrillar protein in smooth muscle in molluscs that is not present in vertebrate muscles. This study characterized its sequence feature and expression patterns in Yesso scallop Patinopecten yessoensis and revealed the unique phosphorylation sites in scallops. The mRNA and protein expression of paramyosin was mainly found in foot and smooth adductor muscle. At late larval stages, strong paramyosin mRNA signals were detected in the symmetric positions of anterior and posterior adductor muscles. The present findings support that paramyosin may serve as the most important component of smooth muscle assembly during muscle development and catch regulation in scallops. Paramyosin is an important myofibrillar protein in molluscan smooth muscle. The full-length cDNA encoding paramyosin has been identified from Yesso scallop Patinopecten yessoensis. The length of paramyosin molecule has been found to be 3715 bp, which contains an open reading frame (ORF) of 2805 bp for 934 amino acid residues. Characterization of P. yessoensis paramyosin reveals the typical structural feature of coiled-coil protein, including six alpha-helix (alpha 1-alpha 6) and one coil (eta) structures. Multiple phosphorylation sites have been predicted at the N-terminus of paramyosin, representing the unique phosphorylation sites in scallops. The highest levels of mRNA and protein expression of paramyosin have been found in foot and the smooth adductor muscle. According to whole-mount in situ hybridization (WISH), strong paramyosin mRNA signals were detected in the symmetric positions of anterior and posterior adductor muscles at late larval stages. These findings support that paramyosin may serve as the most important components for myogenesis and catch regulation in scallops. The present findings will not only help uncover the potential function of myofibrillar proteins in molluscs but also provide molecular evidence to infer evolutionary relationships among invertebrates.

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