scholarly journals Contribution of Mobile Group II Introns to Sinorhizobium meliloti Genome Evolution

2018 ◽  
Vol 9 ◽  
Author(s):  
Nicolás Toro ◽  
Francisco Martínez-Abarca ◽  
María D. Molina-Sánchez ◽  
Fernando M. García-Rodríguez ◽  
Rafael Nisa-Martínez
Keyword(s):  
Genome Evolution ◽  
Sinorhizobium Meliloti ◽  
Group Ii Introns ◽  
Group Ii

Diversity of group II introns in the genome of Sinorhizobium meliloti strain 1021: splicing and mobility of RmInt1

2003 ◽  
Vol 268 (5) ◽  
pp. 628-636 ◽  
Author(s):  
N. Toro ◽  
F. Martínez-Abarca ◽  
M. Fernández-López ◽  
E. Muñoz-Adelantado
Keyword(s):  
Sinorhizobium Meliloti ◽  
Group Ii Introns ◽  
Meliloti Strain ◽  
Group Ii

scholarly journals Organellar Introns in Fungi, Algae, and Plants

Cells ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 2001
Author(s):  
Jigeesha Mukhopadhyay ◽  
Georg Hausner
Keyword(s):  
Gene Expression ◽  
Ribosomal Proteins ◽  
Heterologous Gene Expression ◽  
Group I Introns ◽  
Group Ii Introns ◽  
Homing Endonucleases ◽  
Organellar Genomes ◽  
Chloroplast Genomes ◽  
Group I ◽  
Group Ii

Introns are ubiquitous in eukaryotic genomes and have long been considered as ‘junk RNA’ but the huge energy expenditure in their transcription, removal, and degradation indicate that they may have functional significance and can offer evolutionary advantages. In fungi, plants and algae introns make a significant contribution to the size of the organellar genomes. Organellar introns are classified as catalytic self-splicing introns that can be categorized as either Group I or Group II introns. There are some biases, with Group I introns being more frequently encountered in fungal mitochondrial genomes, whereas among plants Group II introns dominate within the mitochondrial and chloroplast genomes. Organellar introns can encode a variety of proteins, such as maturases, homing endonucleases, reverse transcriptases, and, in some cases, ribosomal proteins, along with other novel open reading frames. Although organellar introns are viewed to be ribozymes, they do interact with various intron- or nuclear genome-encoded protein factors that assist in the intron RNA to fold into competent splicing structures, or facilitate the turn-over of intron RNAs to prevent reverse splicing. Organellar introns are also known to be involved in non-canonical splicing, such as backsplicing and trans-splicing which can result in novel splicing products or, in some instances, compensate for the fragmentation of genes by recombination events. In organellar genomes, Group I and II introns may exist in nested intronic arrangements, such as introns within introns, referred to as twintrons, where splicing of the external intron may be dependent on splicing of the internal intron. These nested or complex introns, with two or three-component intron modules, are being explored as platforms for alternative splicing and their possible function as molecular switches for modulating gene expression which could be potentially applied towards heterologous gene expression. This review explores recent findings on organellar Group I and II introns, focusing on splicing and mobility mechanisms aided by associated intron/nuclear encoded proteins and their potential roles in organellar gene expression and cross talk between nuclear and organellar genomes. Potential application for these types of elements in biotechnology are also discussed.

Self‐Splicing Group II Introns

Ribozymes ◽  
2021 ◽  
pp. 143-167
Author(s):  
Isabel Chillón ◽  
Marco Marcia
Keyword(s):  
Group Ii Introns ◽  
Group Ii ◽  
Self Splicing

scholarly journals Generalized bacterial genome editing using mobile group II introns and Cre‐ lox

2013 ◽  
Vol 9 (1) ◽  
pp. 685 ◽  
Author(s):  
Peter J Enyeart ◽  
Steven M Chirieleison ◽  
Mai N Dao ◽  
Jiri Perutka ◽  
Erik M Quandt ◽  
...  
Keyword(s):  
Genome Editing ◽  
Bacterial Genome ◽  
Group Ii Introns ◽  
Group Ii

scholarly journals Small molecules that target group II introns are potent antifungal agents

2018 ◽  
Vol 14 (12) ◽  
pp. 1073-1078 ◽  
Author(s):  
Olga Fedorova ◽  
G. Erik Jagdmann ◽  
Rebecca L. Adams ◽  
Lin Yuan ◽  
Michael C. Van Zandt ◽  
...  
Keyword(s):  
Small Molecules ◽  
Antifungal Agents ◽  
Target Group ◽  
Group Ii Introns ◽  
Group Ii

scholarly journals Recent mobility of plastid encoded group II introns and twintrons in five strains of the unicellular red algaPorphyridium

PeerJ ◽  
2015 ◽  
Vol 3 ◽  
pp. e1017 ◽  
Author(s):  
Marie-Mathilde Perrineau ◽  
Dana C. Price ◽  
Georg Mohr ◽  
Debashish Bhattacharya
Keyword(s):  
Group Ii Introns ◽  
Group Ii

Bacterial Group II Introns: Identification and Mobility Assay

2016 ◽  
pp. 21-32
Author(s):  
Nicolás Toro ◽  
María Dolores Molina-Sánchez ◽  
Rafael Nisa-Martínez ◽  
Francisco Martínez-Abarca ◽  
Fernando Manuel García-Rodríguez
Keyword(s):  
Group Ii Introns ◽  
Bacterial Group ◽  
Group Ii
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