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Binding of Arabidopsis gene promoters and the AtMYB44 R2R3 domain protein. DNA fragments amplified from promoter regions (∼2 kb) of the Arabidopsis genes ABI5, ERA1, ERD1 and FCA were labeled with digoxigenin and incubated without protein (−), with GST protein (G) or with GST-AtMYB44 R2R3 protein (M). Arrows indicate unbound free probes.
