>sp|C3NEP5|PYRB_SULIY Aspartate carbamoyltransferase catalytic subunit OS=Sulfolobus islandicus GN=pyrB MRLRHVVSSLDLTRDDYFRIFELADKFSNVKKLNYLSGKVVSLAFFEPSTRTAQSFHTAA IKLGADVIGFASEESTSIAKGENLADTIRMLNNYSNCIVMRHKFDGAALFASEISDIPII NAGDGKHEHPTQALIDLYTIYKVFGEIDGRTFGLLGDLKYARTVNSLLRALTRFKPKKVF LISPSQLKVRREILDGLNYPVIETENPYDVIQDIDVLYVTRIQKERFVDEVEYEKVKESY VVDLKLVNMMKKDGIILHPLPRVTEIDRKVDKTTNAKYFYQASLAVPVRMALFYEVLGER KDD