Frontiers in Microbiology, 2022 Group II introns (G2Is) are ribozymes that have retroelement characteristics in prokaryotes. Although G2Is are suggested to have been an important evolutionary factor in the prokaryote-to-eukaryote transition, comprehensive analyses of these introns ...
Masahiro C. Miura +9 more
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The brown algae Pl.LSU/2 group II intron-encoded protein has functional reverse transcriptase and maturase activities. [PDF]
PLoS ONE, 2013 Group II introns are self-splicing mobile elements found in prokaryotes and eukaryotic organelles. These introns propagate by homing into precise genomic locations, following assembly of a ribonucleoprotein complex containing the intron-encoded protein ...
Madeleine Zerbato +5 more
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A Highly Proliferative Group IIC Intron from Geobacillus stearothermophilus Reveals New Features of Group II Intron Mobility and Splicing. [PDF]
J Mol Biol, 2018 Mohr G +7 more
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Structure determination of group II introns [PDF]
Methods, 2017 Group II introns are self-splicing catalytic RNAs that are able to excise themselves from pre-mRNAs using a mechanism identical to that utilized by the spliceosome. Both structural and phylogenetic data support the hypothesis that group II introns and the spliceosome share a common ancestor.
Timothy Wiryaman, Navtej Toor
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BMC Ecology and Evolution, 2023 Group II introns are common in the two endosymbiotic organelle genomes of the plant lineage. Chloroplasts harbor 22 positionally conserved group II introns whereas their occurrence in land plant (embryophyte) mitogenomes is highly variable and specific ...
Simon Zumkeller, Volker Knoop
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Excision of Group II Introns as Circles [PDF]
Molecular Cell, 2001 Group II introns are usually removed from precursor RNAs as lariats comprised of a circular component and a short 3' tail. We find that group II introns can also be excised as complete circles. Circle formation requires release of the 3' exon of a splicing substrate, apparently by a trans splicing mechanism.
Vincent W. Coljee +6 more
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Database for bacterial group II introns [PDF]
Nucleic Acids Research, 2011 The Database for Bacterial Group II Introns (http://webapps2.ucalgary.ca/~groupii/index.html#) provides a catalogue of full-length, non-redundant group II introns present in bacterial DNA sequences in GenBank. The website is divided into three sections.
Li Wu +9 more
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Unraveling the role of the enigmatic MatK maturase in chloroplast group IIA intron excision
Plant Direct, 2020 Maturases are prokaryotic enzymes that aid self‐excision of introns in precursor RNAs and have evolutionary ties to the nuclear spliceosome. Both the mitochondria and chloroplast, due to their prokaryotic origin, encode a single intron maturase, MatR for
Michelle M. Barthet +2 more
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Host Factors Influencing the Retrohoming Pathway of Group II Intron RmInt1, Which Has an Intron-Encoded Protein Naturally Devoid of Endonuclease Activity. [PDF]
PLoS ONE, 2016 Bacterial group II introns are self-splicing catalytic RNAs and mobile retroelements that have an open reading frame encoding an intron-encoded protein (IEP) with reverse transcriptase (RT) and RNA splicing or maturase activity.
Rafael Nisa-Martínez +2 more
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Bacterial group II introns generate genetic diversity by circularization and trans-splicing from a population of intron-invaded mRNAs. [PDF]
PLoS Genetics, 2018 Group II introns are ancient retroelements that significantly shaped the origin and evolution of contemporary eukaryotic genomes. These self-splicing ribozymes share a common ancestor with the telomerase enzyme, the spliceosome machinery as well as the ...
Félix LaRoche-Johnston +3 more
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