Two distinct DNA sequences recognized by transcription factors represent enthalpy and entropy optima.

DNA (5'-D(P*TP*TP*GP*TP*GP*TP*TP*TP*TP*AP*TP*TP*GP*GP*GP*TP*CP*C)-3')

DNA (5'-D(P*GP*GP*AP*CP*CP*CP*AP*AP*TP*AP*AP*AP*AP*CP*AP*CP*AP*A)-3')

PEG 5000, potassium chloride, magnesium chloride, PEG 400

transcription factor, DNA, complex, transcription