title: Identification of a family of group II introns encoding LAGLIDADG ORFs typical of group I introns.
abstract: Group I and group II introns are unrelated classes of introns that each encode proteins that facilitate intron splicing and intron mobility. Here we describe a new subfamily of nine introns in fungi that are group II introns but encode LAGLIDADG ORFs typical of group I introns. The introns have fairly standard group IIB1 RNA structures and are inserted into three different sites in SSU and LSU rRNA genes. Therefore, introns should not be assumed to be group I introns based solely on the presence of a LAGLIDADG ORF.
authors.forename: Navtej
authors.initials: N
authors.lastname: Toor
authors.forename: Steven
authors.initials: S
authors.lastname: Zimmerly
mesh_terms: D001483:Base Sequence; D003001:Cloning, Molecular; D005800:Genes, Fungal / Q000235:genetics; D017343:Genes, Plant / Q000235:genetics; D007438:Introns; D008969:Molecular Sequence Data; D009690:Nucleic Acid Conformation; D016366:Open Reading Frames / Q000235:genetics*; D010446:Peptide Fragments / Q000737:chemistry / Q000235:genetics*; D010802:Phylogeny; D012326:RNA Splicing; D012335:RNA, Ribosomal / Q000737:chemistry / Q000235:genetics*
chemical_list: D010446:Peptide Fragments; D012335:RNA, Ribosomal