Figure 4.
Positional cloning of crr6. A, Structure of CRR6. Exons (boxes) and an intron (horizontal thin line) were determined by direct sequencing of the reverse transcription-PCR products. The position of the crr6 mutation is indicated. B, Alignment of CRR6 homolog sequences. The predicted cleavage site of the target signal (TargetP) is indicated by a vertical arrow. AtCRR6, Arabidopsis; OsCRR6, rice; Slr1097, Synechocystis sp. PCC 6803; All5169, Anabaena sp. PCC 7120; Tll1292, Thermocynechococcus elongatus BP-1. The position of the crr6 mutation is indicated by an asterisk.