2.3.2.13	protein-glutamine gamma-glutamyltransferase	cortical collecting duct cell	the enzyme is detected in the apical medium of polarized cultures of rabbit connecting tubule and cortical collecting duct cells	
2.7.1.149	1-phosphatidylinositol-5-phosphate 4-kinase	cortical collecting duct cell	-	
3.4.21.4	trypsin	cortical collecting duct cell	-	
3.4.22.62	caspase-9	cortical collecting duct cell	-