EMSA with plant promoter fragments. Binding of the NtMYBASΔC1 to PALA (a) and gPAL1 promoter fragments (b). The locations of the fragments in the promoters relative to the transcriptional start site are given as follows: PALA P1, −1,115 to −876; P2, −875 to −626; P3, −625 to −366; P4, −365 to −356; gPAL1 T1, −658 to −475; T2, −474 to −204; and T3, −203 to −42. ψ represents the presence of MBSs.