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GO_term: GO:0000372   

GO:0000372DefinitionThe 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).
TermGroup I intron splicing
TypeBiological_process
ParentInstance_ofGO:0000376
Attributes_of Index Ancestor (21)
Descendent (53)