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Group II intron splicing
Term Information
Accession
GO:0000373
Name
Group II intron splicing
Ontology
biological_process
Synonyms
mRNA splicing
Alternate IDs
None
Definition
The splicing of Group II introns. This occurs by a ribozymic mechanism where the intron sequence forms a distinct 3D structure, characteristic of Group II introns and containing splice site consensus sequences, that is involved in catalyzing the splicing reactions, though protein factors are also required in vivo. Splicing occurs by a series of two transesterification reactions (mechanistically similar to those for splicing of nuclear mRNAs) initiated by a bulged adenosine residue within the intron sequence as the initiating nucleophile. The intron is excised as a lariat.
Source:
GOC:krc,
PMID:11377794
Comment
Note that Group II introns are known to be found in a number of places: rRNA, mRNA, and tRNA in organelles of fungi, plants, and protists; and mRNA of bacteria.
Link
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Link
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Link
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for Group II intron splicing.
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