Glucose-responsive transcription factor that regulates expression of several glucose transporter (HXT) genes in response to glucose. In the absence of glucose, it functions as a transcriptional repressor, whereas high concentrations of glucose cause it to function as a transcriptional activator. In cells growing on low levels of glucose, has a neutral role, neither repressing nor activating transcription (By similarity). Belongs to the EDS1/RGT1 family.