7.2.2.9	P-type Cu2+ transporter	bile canaliculus	cellular distribution of ATP7B, stable ATP7B pool localized to the tight junctions that seal the bile canaliculi shown	
3.6.1.5	apyrase	bile canaliculus	-	
3.6.1.6	nucleoside diphosphate phosphatase	bile canaliculus	-	
3.4.11.2	membrane alanyl aminopeptidase	bile canaliculus	surface membrane