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The GC-rich region and TΨC trn arm found in the petF region of the Thalassiosira weissflogii plastid genome encode a tmRNA

Published online by Cambridge University Press:  01 November 1999

Pulcherie Gueneau ,
Susan Loiseaux-De Goër  and
Kelly P. Williams
Pulcherie Gueneau*
Affiliation:
IVIC-CBB, BAMCO CCS 199–00, PO Box 025322, Miami, FL 33102–5322, USA
Susan Loiseaux-De Goër
Affiliation:
Station Biologique de Roscoff-CNRS, UMR 1931, Place Georges Teissier, F-29680 Roscoff, France
Kelly P. Williams
Affiliation:
Biology Department, Indiana University, Bloomington, IN 47405, USA
*
Correspondence to: Pulchérie Gueneau. Fax: +58.2.372.56.41. e-mail: pgueneau@cbb.ivic.ve
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Abstract

We recently reported (Gueneau et al., 1998) the existence of a GC-rich region downstream of the trnR gene which was conserved in the plastidial genome of three algae: Thalassiosira weissflogii, Odontella sinensis (Bacillariophyceae) and Porphyra purpurea (Rhodophyceae). We identified this GC-rich region as a possible vestigial ORF and noted additional high similarity to an open reading frame (ORF) in a plastid from a fourth alga, Pavlova lutherii (Haptophyceae); sequence data from P. lutherii did not extend to the TΨC tRNA arm. We now report that this region instead encodes a recently recognized type of RNA known as tmRNA (Fig. 1A).

Type
Review Article
Information
European Journal of Phycology , Volume 34 , Issue 5 , November 1999 , pp. 533 - 535
Copyright
Copyright © Cambridge University Press 1999

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