>tr|A0A5Q2V9Z0|A0A5Q2V9Z0_SERPR Aspartate carbamoyltransferase regulatory chain OS=Serratia proteamaculans GN=pyrI MTHDNKLQVEAIKCGTVIDHIPAQIGFKLLTLFKLTATDQRITIGLNLPSGELGRKDLIK IENTFLTEQQANQLAMYAPKATVNRIDNYEVVRKLTLSLPDHIDGVLTCPNSNCISRSEP VSSSFSVKSRDGDVHLKCRYCEKEFEHQVVLQAD