>sp|Q9UX07|PYRI_SACS2 Aspartate carbamoyltransferase regulatory chain OS=Saccharolobus solfataricus GN=pyrI MISSSKRDELIVSKIRNGTVIDHIPAGRALAVLRILGIRGSEGYRVALVMNVESKKIGRK DIVKIEDRVIDEKEASLITLIAPSATINIIRDYVVTEKRHLEVPKQIRGLIKCPNPQCIT NNDVEAESRFITISIKPLKLKCKYCEMYITEDDVIRQIL