Category:GO:0000372 ! Group I intron splicing

name: Group I intron splicing
namespace: biological_process
def: "The splicing of Group I introns. This occurs by a ribozymic mechanism where the intron sequence forms a distinct 3D structure, characteristic of Group I introns and involved in determining the locations of the splice sites (there do not appear to be consensus splice site sequences) as well as having a role in catalyzing the splicing reactions, though protein factors are also required in vivo. Splicing occurs by a series of two transesterification reactions, generally with exogenous guanosine as the initiating nucleophile. The intron is excised as a linear piece (though it may subsequently circularize)." [GOC:krc, PMID:11377794]
comment: Note that Group I introns are known to be found in a number of places: rRNA, mRNA, and tRNA in organelles of fungi, plants, and protists; tRNA and mRNA of bacteria and bacteriophage; rRNA of protists and fungi; and occasionally in mRNA of animal mitochondria (e.g. sea anemone).
synonym: "mRNA splicing" RELATED []
is_a: GO:0000376 ! RNA splicing, via transesterification reactions with guanosine as nucleophile

AmiGO <GOterm>GO:0000372</GOterm>
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