Guanosine PentaphosphateStreptomyces antibioticusGuanosine TetraphosphateDinucleoside PhosphatesLigasesGuanosineAdenylate KinaseOptical Rotatory DispersionDithioerythritolGuanine NucleotidesReceptors, Purinergic P2XAdenine NucleotidesNucleoside-Phosphate KinasePhosphotransferasesSuraminGuanosine 5'-O-(3-Thiotriphosphate)Receptors, Purinergic P2Guanosine TriphosphateAdenosine Triphosphate