Term Name:	18S rRNA aminocarboxypropyltransferase activity
Synonyms:
Definition:	Catalysis of the reaction: N1-methylpseudouridine in 18S rRNA + S-adenosyl-L-methionine = H+ + N1-methyl-N3-[(3S)-3-amino-3-carboxypropyl]pseudouridine in 18S rRNA + S-methyl-5'-thioadenosine.
Ontology:	GO: Molecular Function [GO:0106388]    QuickGO    AmiGO