Comparison of RNA editing in single and combined −1 or +1 mutants.

Editing sites are indicated by a C followed by the position of the base on the mature cox2 transcript. Combined mutants present all but C77, C259 and C385 editing sites mutated either at −1 or +1 position in a single construct. Sites C466 and C467 disappeared in the −1 and +1 combined mutants respectively. The numbers indicate the percentage of edited transcripts at the site indicated after sequencing of at least 16 RT-PCR clones.