EntityQ232956· pop 6· linked from 53 articlestwo-component regulatory systemSign in to saveserves as a basic stimulus-response coupling mechanism to allow organisms to sense and respond to changes in many different environmental conditionsConnectionseukaryoteEntityEscherichia coliEntitycytoplasmEntityL-aspartic acidEntitychemotaxisEntityosmoregulationEntitytransmembrane proteinEntityendosymbiontEntitywaterEntityAnimaliaEntityplantEntitynitrogenEntitycellEntitybacteriaEntitypotassiumEntityorganismEntityphotosynthesisEntitytemperatureEntityantibioticEntityArchaeaEntityCategoriesProtein domainsProtein pages needing a pictureSignal transduction