Please use this identifier to cite or link to this item: https://doi.org/10.1186/1471-2164-7-242
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dc.titleThe complete mitochondrial genome of a basal teleost, the Asian arowana (Scleropages formosus, Osteoglossidae)
dc.contributor.authorYue G.H.
dc.contributor.authorLiew W.C.
dc.contributor.authorOrban L.
dc.date.accessioned2020-09-04T06:39:26Z
dc.date.available2020-09-04T06:39:26Z
dc.date.issued2006
dc.identifier.citationYue G.H., Liew W.C., Orban L. (2006). The complete mitochondrial genome of a basal teleost, the Asian arowana (Scleropages formosus, Osteoglossidae). BMC Genomics 7 : 242. ScholarBank@NUS Repository. https://doi.org/10.1186/1471-2164-7-242
dc.identifier.issn14712164
dc.identifier.urihttps://scholarbank.nus.edu.sg/handle/10635/174466
dc.description.abstractBackground: Mitochondrial DNA-derived sequences have become popular markers for evolutionary studies, as their comparison may yield significant insights into the evolution of both the organisms and their genomes. From the more than 24,000 teleost species, only 254 complete mtDNA sequences are available (GenBank status on 06 Sep 2006). In this paper, we report the complete mitochondrial genome sequence of Asian arowana, a basal bonytongue fish species, which belongs to the order of Osteoglossiformes. Results: The complete mitochondrial genomic sequence (mtDNA) of Asian arowana (Scleropages formosus) was determined by using shotgun sequencing method. The length of Asian arowana mtDNA is ca. 16,650 bp (its variation is due to polymorphic repeats in the control region), containing 13 protein-coding genes, 22 tRNA and 2 rRNA genes. Twelve of the thirteen protein coding genes were found to be encoded by the heavy strand in the order typically observed for vertebrate mitochondrial genomes, whereas only nad6 was located on the light strand. An interesting feature of Asian arowana mitogenome is that two different repeat arrays were identified in the control region: a 37 bp tandem repeat at the 5' end and an AT-type dinucleotide microsatellite at the 3' end. Both repeats show polymorphism among the six individuals tested; moreover the former one is present in the mitochondrial genomes of several other teleost groups. The TACAT motif described earlier only from mammals and lungfish was found in the tandem repeat of several osteoglossid and eel species. Phylogenetic analysis of fish species representing Actinopterygii and Sarcopterygii taxa has shown that the Asian arowana is located near the baseline of the teleost tree, confirming its status among the ancestral teleost lineages. Conclusion: The mitogenome of Asian arowana is very similar to the typical vertebrate mitochondrial genome in terms of gene arrangements, codon usage and base composition. However its control region contains two different types of repeat units at both ends, an interesting feature that to our knowledge has never been reported before for other vertebrate mitochondrial control regions. Phylogenetic analysis using the complete mtDNA sequence of Asian arowana confirmed that it belongs to an ancestral teleost lineage. © 2006 Yue et al; licensee BioMed Central Ltd.
dc.publisherBioMed Central Ltd.
dc.sourceUnpaywall 20200831
dc.subjectdinucleotide
dc.subjectmitochondrial DNA
dc.subjectribosome RNA
dc.subjecttransfer RNA
dc.subjectmitochondrial DNA
dc.subjectmitochondrial protein
dc.subjecttransfer RNA
dc.subject3' untranslated region
dc.subject5' untranslated region
dc.subjectarticle
dc.subjectcodon usage
dc.subjectcontrolled study
dc.subjectDNA microarray
dc.subjectDNA sequence
dc.subjectDNA strand
dc.subjectfish genetics
dc.subjectgene amplification
dc.subjectgene identification
dc.subjectgenetic polymorphism
dc.subjectgenome
dc.subjectmitochondrion
dc.subjectnonhuman
dc.subjectnucleotide sequence
dc.subjectphylogeny
dc.subjectpolymerase chain reaction
dc.subjectScleropages formosus
dc.subjecttandem repeat
dc.subjectteleost
dc.subjectvertebrate
dc.subjectanimal
dc.subjectchemistry
dc.subjectclassification
dc.subjectfish
dc.subjectgenetics
dc.subjectgenome
dc.subjectmitochondrial gene
dc.subjectmitochondrion
dc.subjectmolecular genetics
dc.subjectnucleotide repeat
dc.subjectnucleotide sequence
dc.subjectregulatory sequence
dc.subjectRNA gene
dc.subjectActinopterygii
dc.subjectMammalia
dc.subjectOsteoglossidae
dc.subjectOsteoglossiformes
dc.subjectOsteoglossum bicirrhosum
dc.subjectSarcopterygii
dc.subjectScleropages formosus
dc.subjectTeleostei
dc.subjectVertebrata
dc.subjectAnimals
dc.subjectBase Sequence
dc.subjectDNA, Mitochondrial
dc.subjectFishes
dc.subjectGenes, Mitochondrial
dc.subjectGenes, rRNA
dc.subjectGenome
dc.subjectMitochondria
dc.subjectMitochondrial Proteins
dc.subjectMolecular Sequence Data
dc.subjectPhylogeny
dc.subjectRegulatory Sequences, Nucleic Acid
dc.subjectRepetitive Sequences, Nucleic Acid
dc.subjectRNA, Transfer
dc.typeArticle
dc.contributor.departmentBIOLOGY (NU)
dc.contributor.departmentBIOLOGICAL SCIENCES
dc.description.doi10.1186/1471-2164-7-242
dc.description.sourcetitleBMC Genomics
dc.description.volume7
dc.description.page242
dc.published.statePublished
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