C, ChIP-qPCR assay of TOC1 binding to promoter of pre-dawn-phased PIF3 target genes at ZT14 in Col-0, native promoter TOC1 and 5X lines. D, ChIP-qPCR assay of the chromatin residence of native promoter TOC1-GFP at target promoters in toc1 vs. pif3/4/5 toc1 (pif345t1) mutant backgrounds. Data information: 3-d-old SD-grown seedlings were harvested at ZT14, TOC1-GFP was immunoprecipitated by α-GFP and magnetic protein G beads. Data from 3 independent trials were averaged, error bars indicate SEM. Asterisks indicates significant differences (** p<0.001, *** p<0.0001, Student's t test), n.s=not significant. 