[Editing of the mitochondrial cox3 transcript may yield a new site of protein-protein interactions in wild cereal Elymus sibiricus L]. / Redaktirovanie transkripta gena cox3 v mitokhondriiakh dikorastushchego zlaka Elumus sibiricus L. mozhet privodit' k obrazovaniiu novogo uchastka belok-belkovogo vzaimodeistviia.

With PCR, RT-PCR, and direct sequencing, complete nucleotide sequences were established for the Elymus sibiricus mitochondrial cytochrome c oxidase subunit 3 gene (cox3) and its cDNA. The cox3 transcript was shown to have 12 editing sites with changes affecting the amino acid sequence of the protein product. The editing of the primary cox3 transcript was found to change the position of a site of protein-protein interactions. The results demonstrate again the important role of mRNA editing in posttranscriptional regulation of the expression of plant mitochondrial genes.