Service interruption on Monday 11 July from 12:30 to 13:00: all the sites of the CCSD (HAL, EpiSciences, SciencesConf, AureHAL) will be inaccessible (network hardware connection).
Skip to Main content Skip to Navigation
Journal articles

Specific mitochondrial ss-tRNAs in phylum Chaetognatha

Abstract : Chaetognaths are marine invertebrate organisms that constitute a small phylum of very abundant animals. Chaetognaths exhibit several morphological, physiological, anatomical and molecular peculiarities. In all known chaetognath mitochondrial (mt) genomes, the number of genes encoding tRNAs is always small. In addition, the primary sequences and secondary structures of chaetognath tRNAs are not conventional. Several metazoan mt-trn genes (encoding tRNAs) exhibit nucleotide triplets corresponding to stop codons (TAG/TAA) and/or start codons (ATG/ATA) at specific conserved positions. The products of genes that bear one or both types of these codons are known as ss-tRNAs (ss for stop/start). Indirect analyses strongly suggest that in chaetognath mt genomes, some of these start and stop codons could be functional. Moreover, taking these codons into account in the algorithms predicting tRNAs makes it possible to identify and correct several potential annotation errors. Furthermore, a type of ss-trn gene appears to have emerged by duplication in order Aphragmophora.
Document type :
Journal articles
Complete list of metadata

Cited literature [46 references]  Display  Hide  Download
Contributor : Eric Faure Connect in order to contact the contributor
Submitted on : Thursday, May 16, 2019 - 7:28:28 AM
Last modification on : Thursday, February 17, 2022 - 10:44:02 AM


Faure 2019 Specific mitochondr...
Publisher files allowed on an open archive


Distributed under a Creative Commons Attribution - NonCommercial - ShareAlike 4.0 International License


  • HAL Id : hal-02130653, version 1



Eric Faure, Roxane-Marie Barthelemy. Specific mitochondrial ss-tRNAs in phylum Chaetognatha. Journal of Entomology and Zoology Studies, 2019, 7, pp.304 - 315. ⟨hal-02130653⟩



Record views


Files downloads