Evidence of the specific molecular interactions between naringenin, NODD and nod-promoter.

This paper presents evidence that specific molecular interactions occur between three nod regulation elements: naringenin, NODD and nod-promoter. No such interactions were observed when the concentration of naringenin was less than 0.4 mM. However, remarkable molecular interactions were observed when naringenin was at 4.0 mM. The interactions were highly specific because no such interactions have been observed when naringenin was exposed at various concentrations to other promoter-regulatory protein system (e.g., the protease regulatory system of Xanthomonas campestris, although, like NODD-nod-promoter system, specific binding occurs between the protease promoter and the corresponding regulatory protein).