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The human genome, as with the genome of most organisms, is comprised of various types of mobile genetic element derived repeats. Mobile genetic elements that mobilize by an RNA intermediate, include both autonomous and non-autonomous retrotransposons, and mobilize by a “copy and paste” mechanism that relies of the presence of a functional reverse transcriptase activity. The extent to which these different types of elements are actively mobilizing varies among organisms, as revealed with the advent of Next Generation DNA sequencing (NGS).To understand the normal and aberrant mechanisms that impact the mobility of these elements requires a more extensive understanding of how these elements interact with molecular pathways of the cell, including DNA repair, recombination and chromatin. In addition, epigenetic based-mechanisms can also influence the mobility of these elements, likely by transcriptional activation or repression in certain cell types. Studies regarding how mobile genetic elements interface and evolve with these pathways will rely on genomic studies from various model organisms. In addition, the mechanistic details of how these elements are regulated will continue to be elucidated with the use of genetic, biochemical, molecular, cellular, and bioinformatic approaches. Remarkably, the current understanding regarding the biology of these elements in the human genome, suggests these elements may impact developmental biology, including cellular differentiation, neuronal development, and immune function. Thus, aberrant changes in these molecular pathways may also impact disease, including neuronal degeneration, autoimmunity, and cancer.

transposon --- genome stability --- model organisms --- reverse transcriptase --- Mobile DNA --- RNA-dependent DNA polymerase --- cellular differentiation --- retrotransposon --- DNA repair

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The human genome, as with the genome of most organisms, is comprised of various types of mobile genetic element derived repeats. Mobile genetic elements that mobilize by an RNA intermediate, include both autonomous and non-autonomous retrotransposons, and mobilize by a “copy and paste” mechanism that relies of the presence of a functional reverse transcriptase activity. The extent to which these different types of elements are actively mobilizing varies among organisms, as revealed with the advent of Next Generation DNA sequencing (NGS).To understand the normal and aberrant mechanisms that impact the mobility of these elements requires a more extensive understanding of how these elements interact with molecular pathways of the cell, including DNA repair, recombination and chromatin. In addition, epigenetic based-mechanisms can also influence the mobility of these elements, likely by transcriptional activation or repression in certain cell types. Studies regarding how mobile genetic elements interface and evolve with these pathways will rely on genomic studies from various model organisms. In addition, the mechanistic details of how these elements are regulated will continue to be elucidated with the use of genetic, biochemical, molecular, cellular, and bioinformatic approaches. Remarkably, the current understanding regarding the biology of these elements in the human genome, suggests these elements may impact developmental biology, including cellular differentiation, neuronal development, and immune function. Thus, aberrant changes in these molecular pathways may also impact disease, including neuronal degeneration, autoimmunity, and cancer.

transposon --- genome stability --- model organisms --- reverse transcriptase --- Mobile DNA --- RNA-dependent DNA polymerase --- cellular differentiation --- retrotransposon --- DNA repair

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Transfection --- Transposons --- Mobile genetic elements --- Interspersed Repetitive Sequences --- Eléments génétiques mobiles --- Séquences répétées dispersées --- Transfert de gène --- Gene transfer --- Mobile genetic elements. --- Transposons. --- Transfection. --- Genetic transformation --- Viral genetics --- Tn elements --- Transposable elements --- Genetic elements, Mobile --- Genetic mobile elements --- Mobile DNA --- Mobile DNA sequences --- Mobile elements, Genetic --- Eléments génétiques mobiles --- Séquences répétées dispersées --- Nucleic acids --- DNA --- Molecular genetics --- ADN --- DNA Transposable Elements --- DNA. --- GENOMES --- GENE TRANSFER --- MONOGRAPHS --- EVOLUTION

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DNA --- Molecular genetics --- Mobile genetic elements --- ADN --- Génétique moléculaire --- Eléments génétiques mobiles --- Periodicals --- Périodiques --- Genomics --- Genomics. --- Sequence Analysis, DNA. --- Mobile genetic elements. --- Genetic elements, Mobile --- Genetic mobile elements --- Mobile DNA --- Mobile DNA sequences --- Mobile elements, Genetic --- Genome research --- Genomes --- Analysis, DNA Sequence --- DNA Sequence Determination --- DNA Sequence Determinations --- DNA Sequencing --- Determination, DNA Sequence --- Determinations, DNA Sequence --- Sequence Determinations, DNA --- DNA Sequence Analysis --- Sequence Determination, DNA --- Analyses, DNA Sequence --- DNA Sequence Analyses --- Sequence Analyses, DNA --- Sequencing, DNA --- Research --- DNA rearrangements --- DNA recombination --- Molecular Sequence Annotation --- Human Genome Project --- Genome --- DNA. --- Comparative Genomics --- Comparative Genomic --- Genomic, Comparative --- Genomics, Comparative --- Genetics --- dna rearrangements --- dna recombination --- Elements genètics mòbils. --- ADN.

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Many biodegradation pathways, both aerobic and anaerobic, have already been characterised, and the phylogenetic relationships among catabolic genes within them have been studied. However, new biodegradation activities and their coding genes are continuously being reported, including those involved in the catabolism of emerging contaminants and those generally regarded as non-biodegradable. Gene regulation is also an important issue for the efficient biodegradation of contaminants. Specific induction by the substrate and over-imposed global regulatory networks adjust the expression of the biodegradation genes to meet bacterial physiological needs. New biodegradation pathways can be assembled in a particular strain or in a bacterial consortium by recruiting biodegradation genes from different origins through horizontal gene transfer. The abundance and diversity of biodegradation genes, analysed by either genomic or metagenomic approaches, constitute valuable indicators of the biodegradation potential of a particular environmental niche. This knowledge paves the way to systems metabolic engineering approaches to valorise biowaste for the production of value-added products.

tetralin --- Sphingopyxis granuli strain TFA --- Rhodococcus sp. strain TFB --- redox proteins --- carbon catabolite repression --- plastics --- biodegradation --- sustainability --- upcycling --- biotransformations --- polyethylene terephthalate --- terephthalate --- ethylene glycol --- biphenyl --- bph gene --- integrative conjugative element --- genome sequence --- LysR --- transcription factor --- Acinetobacter --- LTTR --- benzoate --- muconate --- synergism --- biosensor --- naphthalene --- toluene --- hydrocarbons --- plant growth promotion --- bioremediation --- Pseudomonas --- soil pollution --- phytoremediation --- rhizoremediation --- diesel --- bacteria --- consortium --- metagenomics --- PAHs --- TPH --- regulation --- anaerobic --- Azoarcus --- promoter architecture --- bioethanol --- furfural --- ALE --- AraC --- sterols --- bile acids --- steroid hormones --- 9,10-seco pathway --- 4,5-seco pathway --- 2,3-seco pathway --- xenobiotics --- Carbaryl --- horizontal gene transfer --- mobile genetic elements --- transposons --- integrative conjugative elements --- pathway assembly --- evolution --- Sphingopyxis lindanitolerans --- pesticide --- complete genome sequence --- pangenome --- γ-HCH degradation --- lin genes --- testosterone --- steroid --- catabolism --- transcriptomic --- valorisation --- catabolic pathway --- mobile DNA --- anaerobic biodegradation --- gene regulation