GO_term: GO:0000372   

GO:0000372	Definition	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).
	Term	Group I intron splicing
	Type	Biological_process
	Parent	Instance_of	GO:0000376
	Attributes_of	Index	Ancestor (21)
			Descendent	GO:0000154
				GO:0006364
				GO:0006365
				GO:0030490
				GO:0030489
				GO:0006342
				GO:0008616
				GO:0016075
				GO:0016077
				GO:0016076
				GO:0016078
				GO:0048254
				GO:0006387
				GO:0016548
				GO:0016549
				GO:0030488
				GO:0040031
				GO:0006400
				GO:0006388
				GO:0016180
				GO:0008033
				GO:0001680
				GO:0001682
				GO:0042245
				GO:0016072
				GO:0016074
				GO:0016073
				GO:0006399
				GO:0006350
				GO:0016481
				GO:0045892
				GO:0000372
				GO:0042780
				GO:0042779
				GO:0042778
				GO:0045449
				GO:0043040
				GO:0043039
				GO:0006418
				GO:0019988
				GO:0030630
				GO:0001720
				GO:0001718
				GO:0001717
				GO:0031125
				GO:0043144
				GO:0031126
				GO:0043145
				GO:0031167
				GO:0031118
				GO:0031070
				GO:0031120
				GO:0051391

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