>sp|C3MW45|PYRB_SULIM Aspartate carbamoyltransferase catalytic subunit OS=Sulfolobus islandicus GN=pyrB MRLRHVVSSLDLTRDDYFRIFELADKFSNVKKLNYLSGKVVSLAFFEPSTRTAQSFHTAA IKLGADVIGFASEESTSIAKGENLADTIRMLNNYSNCIVMRHKFDGAALFASEISDIPII NAGDGKHEHPTQALIDLYTIYKVFGEIDGRTFGLLGDLKYARTVNSLLRALTRFKPKKIF LISPSQLKVRREILDGLNYPVIETENPYDVIQDIDVLYVTRIQKERFVDELEYEKVKESY VVDLKLVNMMKKDGIILHPLPRVTEIDRKVDKTTNAKYFYQASLAVPVRMALFYEVLGER KDD