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Analysis of the DNA binding ability of Arabidopsis INDETERMINATE DOMAIN (AtIDD) proteins using yeast one-hybrid assay. A tandem sequence of four copies of IDD binding sequence (IDDBS) (A) and MGP binding sequence (MGPBS) (B) were placed upstream of the LacZ gene and used as promoters. DNA binding was detected by X-gal staining assay. Empty, empty vector pGAD424.
