4.6.1.2	Ca2+	-	677989, 680671, 691110	
4.6.1.2	Ca2+	activates, is required for activation of the retinal enzyme by cone-specific calcium sensor guanylate cyclase activating protein 4	693267	
4.6.1.2	Ca2+	activation at 0.05 mM	34843	
4.6.1.2	Ca2+	activation of soluble enzyme	34843, 34850, 34851, 34867	
4.6.1.2	Ca2+	Ca2+-dependent negative feedback control mediated by guanylate-activating proteins	651158	
4.6.1.2	Ca2+	dose-dependent stimulation	680181	
4.6.1.2	Ca2+	modulates the membrane guanylate cyclase transduction machinery by both inhibiting and stimulating it involving the guanylate cyclae, the guanylate cyclase activating protein type 1, S100B, and neurocalcin delta, mechanism, overview	692407	
4.6.1.2	Ca2+	the two neuronal calcium sensors, GCAP1 and GCAP2, confer Ca2+ sensitivity to guanylyl cyclase activity	693152	
4.6.1.2	CO	carbon monoxide is a modulator of neurotransmission in cardiac ganglia and in neural control of the adult human heart	690679	
4.6.1.2	CO	competitive binding, off rates are reduced by YC-1, but YC-1 stimulation of CO binding is unaltered for the heme-intact portion of both mutated proteins, CO release from msGC-NT1-CO is measured in a stopped-flow device by replacement with NO, which binds more quickly and tightly to the enzyme, overview	693096