3.1.3.5	5'-nucleotidase	carotid body	-	749534	
3.1.4.11	phosphoinositide phospholipase C	carotid body	the carotid bodies (CB) are a paired chemoreceptor organ located at the bifurcation of the common carotid arteries	653351	
3.1.4.3	phospholipase C	carotid body	-	653351	
3.1.4.53	3',5'-cyclic-AMP phosphodiesterase	carotid body	PDE4	714638	
3.4.14.9	tripeptidyl-peptidase I	carotid body	enzyme histochemistry show high activity of TPP I in carotid body glomeruli. The glomus cells contain many TPP I-positive granules, while the glial-like sustentacular cells display a slightly fainter reaction	731093	
3.4.17.10	carboxypeptidase E	carotid body	-	81309