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KMID : 0381120150370121041
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Genes and Genomics
2015 Volume.37 No. 12 p.1041 ~ p.1049
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Expressed sequence tag analysis and annotation of genetic information from the freshwater clam, Pisidium (Neopisidium) coreanum endemic to Korea
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Jeong Ji-Eun
Kang Se-Won
Hwang Hee-Ju
Park So-Young
Patnaik Bharat Bhusan
Kim Chang-Mu
Kim Soon-Ok
Nam Myung-Mo
Lee Jae-Bong
Wang Tae-Hun
Park Eun-Bi
Yi Sun-Shin
Han Yeon-Soo
Lee Jun-Sang
Park Hong-Seog
Lee Yong-Seok
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Abstract
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Pisidium (Neopisidium) coreanum is a freshwater clam endemic to Korea. It has been classified as a vulnerable bivalve by the Korean Red List of threatened species and there exist no regional conservation measures. In the present study, we made an attempt to study the expressed sequence tags (ESTs) from the clam species for elucidating genomic information through the annotation of essential genes. A high-quality cDNA library was constructed from the whole body tissue of Pisidium coreanum yielding a collection of 5760 clones. The sequencing of the resultant clones identified 5656 ESTs assembled into 1312 non-redundant sequences, comprising of 791 contigs and 521 singletons. We identified 3265 and 3314 EST sequences showing significant matches (E value <1e?5) to known sequences in the mollusks sequence database (Malacological Society of Korea) and the NCBI non-redundant database, respectively. A total of 1674 putative sequences showed significant matches (E value of 1e?10) with the National Centre for Biotechnology Information-Eukaryotic Clusters of Orthologous Groups (NCBI KOG) database. These sequences were successfully assigned to classified biological processes including translation, ribosomal structure and biogenesis (18.61 %), post-translational modification, protein turnover and chaperones (13.29 %), energy production and conversion (13.86 %), cytoskeleton (12.78 %), and signal transduction mechanisms (7.15 %). Furthermore, we identified 16 transcripts showing high homology with bone morphogenetic protein 2-B that could pave an advancement towards bone therapeutics development.
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KEYWORD
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Pisidium (Neopisidium) coreanum, Endemic species, Expressed sequence tags, Functional annotation, Bone morphogenetic proteins
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