>sp|C3MQG7|PYRB_SULIL Aspartate carbamoyltransferase catalytic subunit OS=Sulfolobus islandicus GN=pyrB MRLRHVVSSLDLTRDDYFRIFELADKFSNVKKLNYLSGKVVSLAFFEPSTRTAQSFHTAA IKLGADVIGFASEESTSIAKGENLADTIRMLNNYSNCIVMRHKFDGAALFASEISDIPII NAGDGKHEHPTQALIDLYTIYKVFGEIDGRTFGLLGDLKYARTVNSLLRALTRFKPKKVF LISPSQLKVRREILDGLNYPVIETENPYDVIQDIDVLYVTRIQKERFVDEVEYEKVKESY VVDLKLVNMMKKDGIILHPLPRVTEIDRKVDKTTNAKYFYQASLAVPVRMALFYEVLGER KDD