The preferences in the orientation (A) and the location (B-C) of the coupling motifs around AuxRE
in the composite auxin responsive elements. A. The number of microarray experiments where the composite elements with the specific orientation of the coupling motifs were found significantly associated with auxin responsiveness (See Methods). B. The significant associations found by microarray data analysis for AuxRE+/Y-patch+, AuxRE+/ABRE-like- and AuxRE+/AuxRE-like+ composite elements, depending on the positioning of the coupling motif relative to AuxRE. The distance between the centers of the coupling motif and anchor AuxRE in nt is plotted along the x axis. The core AuxRE sequence TGTCNN locates from -3 to +3 nt. C. The conceptual summary about the composite structure of auxin responsive elements.