title: Evidence for circadian rhythmicity in guanyl cyclase of the rat intestinal epithelial cell.
abstract: The activity of the enzyme, guanyl cyclase, associated with the rat intestinal brush border membrane, has an endogenous circadian rhythm which is observed in the absence of oral intermittent feeding and of a dark period. This rhythm is cued by the feeding schedule but is essentially unaffected by a light-dark cycle.
mesh_terms: D000818:Animals; D002940:Circadian Rhythm; D004435:Eating; D006162:Guanylate Cyclase / Q000378:metabolism*; D007413:Intestinal Mucosa / Q000201:enzymology*; D008297:Male; D010288:Parenteral Nutrition; D051381:Rats
chemical_list: D006162:Guanylate Cyclase