Translational machinery of Senegalese sole (Solea senegalensis Kaup) and Atlantic halibut (Hippoglossus hippoglossus L.): comparative sequence analysis of the complete set of 60S ribosomal proteins and their expression

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DOIResolve DOI: http://doi.org/10.1007/s10126-008-9104-y
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TypeArticle
Journal titleMarine Biotechnology
Volume10
Issue6
Pages676691; # of pages: 16
AbstractRibosomal proteins (RPs) comprise a large set of highly evolutionarily conserved proteins that are often over-represented in complementary DNA libraries. They have become very useful markers in comparative genomics, genome evolution, and phylogenetic studies across taxa. In this study, we report the sequences of the complete set of 60S RPs in Senegalese sole (Solea senegalensis) and Atlantic halibut (Hippoglossus hippoglossus), two commercially important flatfish species. Amino-acid sequence comparisons of the encoded proteins showed a high similarity both between these two flatfish species and with respect to other fish and human counterparts. Expressed sequence tag analysis revealed the existence of paralogous genes for RPL3, RPL7, RPL41, and RPLP2 in Atlantic halibut and RPL13a in Senegalese sole as well as RPL19 and RPL22 in both species. Phylogenetic analysis of paralogs revealed distinct evolutionary histories for each RP in agreement with three rounds of genome duplications and lineage-specific duplications during flatfish evolution. Steady-state transcript levels for RPL19 and RPL22 RPs were quantitated during larval development and in different tissues of sole and halibut using a real-time polymerase chain reaction approach. All paralogs were expressed ubiquitously although at different levels in different tissues. Most RP transcripts increased coordinately after larval first-feeding in both species but decreased progressively during the metamorphic process. In all cases, expression profiles and transcript levels of orthologous genes in Senegalese sole and Atlantic halibut were highly congruent. The genomic resources and knowledge developed in this survey will be useful for the study of Pleuronectiformes evolution.
Publication date
PublisherSpringer International Publishing AG
LanguageEnglish
AffiliationNational Research Council Canada; NRC Institute for Marine Biosciences
Peer reviewedYes
NRC number42783
1746
NPARC number3538463
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Record identifiere9617141-3928-4598-b83b-88ab26285b06
Record created2009-03-01
Record modified2016-05-09
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