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Nucleotide sequence and determination of the extremities of the 26S ribosomal RNA gene in wheat mitochondria: evidence for sequence rearrangements in the ribosomal genes of higher plants

✍ Scribed by Denis Falconet; Mireille Sevignac; Francis Quétier

Publisher
Springer-Verlag
Year
1988
Tongue
English
Weight
638 KB
Volume
13
Category
Article
ISSN
0172-8083

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✦ Synopsis

The nucleotide sequence of the wheat mitochondrial 26S ribosomal RNA gene and flanking regions was determined and compared with mitochondrial 26S rRNA genes from maize and Oenothera. All three genes exhibit a high degree of homology except within two variable regions. When the plant mitochondrial 26S rRNA genes are compared with Escherichia coli 23S rRNA and chloroplast 23S and 4.5S rRNA genes, a third variable region is apparent close to the 3' end of the gene. The 5' and 3' ends of the wheat mitochondrial gene were determined by S1 nuclease mapping. Computer analysis of the wheat mitochondrial gene revealed several small sequences present either in the 5' region of the 26S rRNA gene or in the 18S rRNA gene.

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