Before revision:  CellDesigner has been used to draw the structures of chemical reactions of Nuclear Receptor Binding to Promoter Regions  .
After revision:  CellDesigner has been used to draw the structures of chemical reactions of Nuclear Receptor Binding to Promoter Regions . After model reduction, the general analytical solution for reduced model is given and the number of species and reactions are reduced from 9 species and 6 reactions to 6 species and 5 reactions .