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Comparative Study
. 1984 Sep 11;12(17):6861-9.
doi: 10.1093/nar/12.17.6861.

Introns and their flanking sequences of Bombyx mori rDNA

H Fujiwara, T Ogura, N Takada, N Miyajima, H Ishikawa, H Maekawa
Free PMC article
Comparative Study

Introns and their flanking sequences of Bombyx mori rDNA

H Fujiwara et al. Nucleic Acids Res. .
Free PMC article

Abstract

We obtained two different clones (16 kb and 13 kb) of B. mori rDNA with intron sequence within the 28S-rRNA coding region. The sequence surrounding the intron was found to be highly conserved as indicated in several eukaryotes (Tetrahymena, Drosophila and Xenopus). The 28S rRNA-coding sequence of 16 kb and 13 kb clone was interrupted at precisely the same sites as those where the D. melanogaster rDNA interrupted by the type I and type II intron, respectively. The intron sequences of B. mori were different from those of D. melanogaster. In 16 kb clone, the intron was flanked by 14 bp duplication of the junction sequence, which was also present once within the 28S rRNA-coding region of rDNA without intron. This 14 bp sequence was identical with those surrounding the introns of Dipteran rDNAs.

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References

    1. Science. 1977 Apr 8;196(4286):180-2 - PubMed
    1. Science. 1977 Sep 16;197(4309):1147-60 - PubMed
    1. Proc Natl Acad Sci U S A. 1977 Dec;74(12):5350-4 - PubMed
    1. Proc Natl Acad Sci U S A. 1978 Mar;75(3):1071-5 - PubMed
    1. Cell. 1978 Oct;15(2):687-701 - PubMed

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