>sp|C6A1L5|PYRI_THESM Aspartate carbamoyltransferase regulatory chain OS=Thermococcus sibiricus GN=pyrI MKELKVSAINKGTVIDHIPSGKGLKVLEILNLPEDNTILVAINVKSQKLGRKDIIKVEGK ILNEDEVNKIALIAPTATVNIIDKWEVVEKRNVEVPDEIVGIIKCANPNCITNYEEVKPK FKVISKKPLKLKCHYCERTMEENMVVKNLL