A group I intron-like sequence in the nuclear small ribosomal subunit gene of the ophiostomatoid fungus Gondwanamyces proteae

Mycol Res. 2003 Dec;107(Pt 12):1442-50. doi: 10.1017/s0953756203008773.

Abstract

During a phylogenetic study of ophiostomatoid fungi, a group I intron-like sequence was noted in the SSU rDNA gene of Gondwanamyces proteae. Secondary structure and sequence characteristics assigned the intron to the I E class. We then examined 27 related Group I-like sequences deposited in GenBank, and as a result 15 additional and previously uncategorized I E rDNA introns were identified. This study, with other recent publications, suggests that the I E class might represent a major family of group I introns that are located within the nuclear SSU and, to some extent LSU, genes in fungi.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Ascomycota / genetics*
  • Base Sequence
  • Conserved Sequence
  • DNA, Fungal / chemistry
  • DNA, Fungal / genetics*
  • Evolution, Molecular
  • Introns / genetics*
  • Molecular Sequence Data
  • Nucleic Acid Conformation
  • Phylogeny
  • RNA, Ribosomal / chemistry
  • RNA, Ribosomal / genetics*
  • Sequence Alignment
  • Sequence Analysis, DNA

Substances

  • DNA, Fungal
  • RNA, Ribosomal