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Unusual organization and lack of recombination in the ribosomal RNA genes ofCoprinus cinereus

✍ Scribed by Jeane Rhodes Cassidy; David Moore; Benjamin C. Lu; Patricia J. Pukkila

Publisher
Springer-Verlag
Year
1984
Tongue
English
Weight
634 KB
Volume
8
Category
Article
ISSN
0172-8083

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✦ Synopsis

We find three interesting characteristics of the genes encoding the ribosomal RNA (rRNA) in the basidiomycete Coprinus cinereus. First, there are only 60 to 90 copies of the genes, fewer than in other fungi. Second, the genes are organized in an unusual arrangement. The 5S rRNA genes are located in the repeat unit which encodes the other rRNAs and all four rRNAs are transcribed in the same direction. Third, meiotic recombination is inhibited within the ribosomal DNA.

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