1.1.1.53	dibutyryl cAMP	only at pH above 7.5 with sufficient Na+ concentration	
1.1.1.53	estrogen	stimulation of the enzyme found in tissues from kidney, intestine and ovary	
1.1.1.53	forskolin	only at pH above 7.5 with sufficient Na+ concentration	
1.1.1.53	salmon gonadotropin	only at pH above 7.5 with sufficient Na+ concentration	
1.1.1.53	salmon gonadotropin	stimulates the membrane bound part of the enzyme