Strains of bacteria resistant to antibiotics, particularly those that are multiresistant, are an
increasing major health care problem around the world. It is now abundantly clear that both …

Bacterial genomes are remarkably stable from one generation to the next but are plastic on
an evolutionary time scale, substantially shaped by horizontal gene transfer, genome …

Gene cassettes are small mobile elements, consisting of little more than a single gene and
recombination site, which are captured by larger elements called integrons. Several …

Horizontal transfer of genomic islands (GEIs), that is, chromosomal regions encoding
functions that can be advantageous for the host, plays a key role in bacterial evolution, but …

Group II introns are mobile ribozymes that self-splice from precursor RNAs to yield excised
intron lariat RNAs, which then invade new genomic DNA sites by reverse splicing. The …

Present in the genomes of bacteria and eukaryotic organelles, group II introns are an
ancient class of ribozymes and retroelements that are believed to have been the ancestors …

Group II introns are remarkable mobile retroelements that use the combined activities of an
autocatalytic RNA and an intron‐encoded reverse transcriptase (RT) to propagate efficiently …

Group II-type introns in the mitochondrial genes of flowering plants belong to the ribozymic,
mobile retroelement family, but not all exhibit conventional structural features and some …

Group II introns are large, autocatalytic ribozymes that catalyze RNA splicing and
retrotransposition. Splicing by group II introns plays a major role in the metabolism of plants …

Mobile group II introns are bacterial retrotransposons that combine the activities of an
autocatalytic intron RNA (a ribozyme) and an intron-encoded reverse transcriptase to insert …