The higher fungus Protomyces inouyei has two group I introns in the 18S rRNA gene.

Journal of molecular evolution ·Vol. 37 ·No. 1 ·1993-07-00 ·Pages 25-8

Nishida H, Blanz PA, Sugiyama J

Abstract

The nucleotide sequence of the small-subunit rRNA (18S rRNA) coding gene in the higher fungus Protomyces inouyei contains two group I introns. This is the first report of two group I introns in the 18S rRNA coding region. Based on the comparison of the two introns of Protomyces inouyei with those of the green alga Ankistrodesmus stipitatus, and the other two higher fungi Pneumocystis carinii and Ustilago maydis, the Protomyces introns are group I introns containing the highly conserved sequence elements P, Q, R, and S. Intron A of Protomyces inouyei is located in the same position as in Pneumocystis carinii while intron B shares the location with that in Ustilago maydis. The phylogenetic relationships strongly support horizontal transfer of these group I introns.

MeSH Terms

Ascomycota/classification,genetics Base Sequence Biological Evolution Introns Molecular Sequence Data Phylogeny RNA, Fungal/genetics RNA, Ribosomal, 18S/genetics Sequence Alignment Sequence Homology, Nucleic Acid

Chemicals

RNA, Fungal RNA, Ribosomal, 18S

Authors & Affiliations

3 authors, click to expand affiliations / ORCID

Nishida H

Molecular and Cellular Biosciences, University of Tokyo, Japan.

Blanz P A

Sugiyama J

References (9)

9 references, click to expand

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Article Info

Journal

Journal of molecular evolution

Abbr.

J Mol Evol

ISSN

0022-2844

DOI

10.1007/BF00170458

Published

1993-07-00

Pages

25-8

Language

English

Region

Germany

NLM ID

0360051

Subset

Databases

GENBANK

D01174, D01175, D11377, M27607, M55626, M55638, X00755, X04971, X12708, X51830, X53497, X53499, X54264, X54265, X54266, X54863, X54864, X54866, X62396

External Links

PubMed source DOI: 10.1007/BF00170458 View journal details

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The higher fungus Protomyces inouyei has two group I introns in the 18S rRNA gene.

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