PMID: 8595675Feb 1, 1996Paper

Primary and secondary structure analyses of the rDNA group-I introns of the Zygnematales (Charophyta)

Current Genetics
D BhattacharyaM Melkonian

Abstract

The Zygnematales (Charophyta) contain a group-I intron (subgroupIC1) within their nuclear-encoded small subunit ribosomal DNA (SSU rDNA) coding region. This intron, which is inserted after position 1506 (relative to the SSU rDNA of Escherichia coli), is proposed to have been vertically inherited since the origin of the Zygnematales approximately 350-400 million years ago. Primary and secondary structure analyses were carried out to model group-I intron evolution in the Zygnematales. Secondary structure analyses support genetic data regarding sequence conservation within regions known to be functionally important for in vitro self-splicing of group-I introns. Comparisons of zygnematalean group-I intron secondary structures also provided some new insights into sequences that may have important roles in in vivo RNA splicing. Sequence analyses showed that sequence divergence rates and the nucleotide compositions of introns and coding regions within any one taxon varied widely, suggesting that the "1506" group-I introns and rDNA coding regions in the Zygnematales evolve independently.

References

Jan 1, 1990·Annual Review of Biochemistry·T R Cech
Nov 23, 1989·Nature·F MichelJ W Szostak
Jul 11, 1989·Nucleic Acids Research·M L Sogin, J C Edman
Sep 25, 1987·Nucleic Acids Research·J M BurkeH F Tabak
Mar 16, 1973·Science·V M Sarich, A C Wilson
Dec 29, 1972·Journal of Molecular Evolution·M Kimura, T Ota
Dec 23, 1982·Nature·R W DaviesC Scazzocchio
May 1, 1994·Nature Structural Biology·T R CechR R Gutell
Sep 25, 1994·Nucleic Acids Research·J F De Jonckheere, S Brown
Oct 11, 1994·Proceedings of the National Academy of Sciences of the United States of America·D BhattacharyaM Melkonian
Jul 11, 1994·Nucleic Acids Research·T YamadaP Songsri
Feb 11, 1994·Journal of Molecular Biology·F L Murphy, T R Cech
Jan 1, 1993·Annual Review of Biochemistry·A M Lambowitz, M Belfort
Jan 1, 1993·FASEB Journal : Official Publication of the Federation of American Societies for Experimental Biology·R SaldanhaA M Lambowitz

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