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Nucleic Acids Research, 1991, Vol. 19, No. 10 2701-2705
© 1991

MOLECULAR BIOLOGY

Ribosomal protein S19 is encoded by the mitochondrial genome in Petunia hybrida

Patricia L. Conklin and Maureen R. Hanson*

Section of Genetics and Development, Biotechnology Building, Cornell University Ithaca, NY 14853, USA

* To whom correspondence should be addressed

Received February 5, 1991. Accepted April 12, 1991.

The rps19 ribosomal protein gene, which has not been previously reported in any mitochondrial genome, was identified by sequence analysis in the mitochondrial DNA of the higher plant Petunia hybrida. According to the sequence of eight rps19 cDNAs, seven C to U conversions with respect to the genomic sequence are present in rps19 transcripts. Not all transcripts are fully edited at these seven sites. Six of the seven C to U conversions change the encoded amino acid sequence by altering four codons. The rps19 gene is located entirely within a repeat sequence which is present in three copies on the 443 kb genome. Due to intragenomlc recombination across these repeats, Petunia rps19 is present in nine different genomic environments.


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