Fig. 4

Intron patterns within the basic and hinge regions of the bZIP domains in SlbZIP proteins. SlbZIP genes are divided into six patterns (a–f) on the basis of the intron number, position and splicing phase. The arrows on the top example sequence indicate the position of two introns. The number of introns and the number of SlbZIP proteins having a particular pattern are also indicated. Phase 0 (P0) and Phase 2 (P2) indicate the splicing phases of the basic and hinge regions of the bZIP domains. P0 represent the intron splicing site between codons, P2 means the intron splicing site locating between the second nucleotide and the third nucleotide in one codon