Variable structures of promoters regulating transcription of cp-like tRNA genes and of some native genes on the sunflower mitochondnial genome

Promoters regulating the transcription of single cp-like tRNA genes have a variable structure whereas those regulating the transcription of native genes or clusters with typical mitochondrial genes in the first position conform to a similar common structure.

Promoter regions regulating the transcription of all cp-like tRNA genes encoded by the sunflower chondriome have been identified. Some of these genes are part of clusters where the first gene is a typical mitochondrial isoform.