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Category:GO:0000374 ! Group III intron splicing
name: Group III intron splicing
namespace: biological_process
def: "The splicing of Group III introns. This occurs by a ribozymic mechanism where the intron sequence forms a distinct 3D structure, characteristic of Group III introns, 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 begun by a bulged adenosine residue within the intron sequence as the initiating nucleophile. The intron is excised as a lariat. Though very similar in structure and mechanism to Group II introns, Group III introns are smaller and more streamlined and the splice site consensus sequences are not as well conserved." [GOC:krc, PMID:11377794]
comment: Note that Group III introns are known to be found in mRNA of plastids of euglenoid protists.
subset: gosubset_prok
synonym: "mRNA splicing" RELATED []
is_a: GO:0000377 ! RNA splicing, via transesterification reactions with bulged adenosine as nucleophile
AmiGO
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Pages in category "GO:0000374 ! Group III intron splicing"
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