Changed sbml generation so that a promoter with both activators and repressors will have a basal rate of production kb rather than an open complex rate of production ko.
Changed sbml generation so that a promoter with both activators and repressors will have a basal rate of production kb rather than an open complex rate of production ko.

MyersResearchGroup/iBioSim,MyersResearchGroup/iBioSim,MyersResearchGroup/iBioSim