>sp|A0B8L2|PYRI_METTP Aspartate carbamoyltransferase regulatory chain OS=Methanothrix thermoacetophila GN=pyrI MVERELKVRPIRSGTVIDHIQAGQALNVLKILGISGTTGATVSVLMNVSSRKLGKKDIVK VEDRELREDEVNKIALIAPGATINIVRDYAVVEKYAVDLPDVIVGVVRCQNPSCISNTNE PIKPKMLVKGKNPVVLRCFYCDQPLTERIAEYLL