The ETS/IGS region in a lower animal, the seawhip, Junceella fragilis (Cnidaria: Anthozoa: Octocorallia): compactness, low variation and apparent conservation of a pre-rRNA processing signal with fungi

Chen, C.L., Miller, David J., Wei, Nuwei Vivian, Dai, Chang-Feng, and Yang, Hsiao-Pei (2000) The ETS/IGS region in a lower animal, the seawhip, Junceella fragilis (Cnidaria: Anthozoa: Octocorallia): compactness, low variation and apparent conservation of a pre-rRNA processing signal with fungi. Zoological Studies, 39 (2). pp. 138-143.

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Abstract

We determined the nucleotide sequence of an atypically short intergeneic spacer/external transcribed spacer (IGS/ETS) region in the seawhip, Junceella fragilis, and identified an 8-bp motif at the 5'-ETS/18S rDNA boundary closely resembling a fungal pre-rRNA A1 cleavage signal. This apparent conservation of processing signals was unexpected, as no corresponding sequence has previously been reported in any animal. The J. fragilis IGS sequence lacks repetitive motifs of the type typical of higher animals, but a microsatellite is present in the putative 3'-ETS. Comparisons of the IGS between geographically isolated populations of J. fragilis indicate an unexpected lack of sequence variation.

Item ID: 13061
Item Type: Article (Refereed Research - C1)
ISSN: 1021-5506
Date Deposited: 06 Dec 2012 05:22
FoR Codes: 06 BIOLOGICAL SCIENCES > 0699 Other Biological Sciences > 069999 Biological Sciences not elsewhere classified @ 100%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970106 Expanding Knowledge in the Biological Sciences @ 100%
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