>tr|B0R9X0|B0R9X0_HALS3 Aspartate carbamoyltransferase regulatory chain OS=Halobacterium salinarum GN=pyrI MSSDQHLQVSKIQAGTVIDHIPAGQALQVLQILGTNGASDDQITVGMNVTSERHHRKDIV KIEGRELSQDEVDVLSLIAPDATINIVRDYEVDEKRRVDRPDVVAGVLSCPNPNCITAND EPVRSGFDVLDDGMRCQYCEQIVSEDIPSLIDPE