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Article

Phylogenetically close group I introns with different positions among Paramecium bursaria photobionts imply a primitive stage of intron diversification.

Molecular biology and evolution - 1 Jun 2009

Hoshina Ryo, Imamura Nobutaka

Abstract excerpt

Group I introns are a distinct RNA group that catalyze their excision from precursor RNA transcripts and ligate the exons. Group I introns have a sporadic and highly biased distribution due to the two intron transfer mechanisms of homing and reverse splicing. These transfer pathways recognize assigned sequences even when introns are transferred beyond the species level. Consequently, introns at homologous gene...

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Identifiers

PMID: 19279084
DOI: 10.1093/molbev/msp044

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-08.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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