>4WJ0_1|Chains A, B|CRISPR-associated endonuclease Cas1|Pyrococcus horikoshii (70601) MRKKPLTIFSDGTLTRRENTLYFESAKGRKPLAIEGIYDIYIYGHVNITSQALHYIAQKGILIHFFNHYGYYDGTFYPRETLLSGDLIIRQAEHYLNKEKRLFLAKSFVTGGTKNMERNLKNWGIKAKLSDYLDELNDARKITEIMNVEARIRQEYYAKWDENLPEEFKIVKRTRRPPKNEMNALISFLNSRLYATIITEIYNTQLAPTISYLHEPSERRFSLSLDLSEIFKPIIADRVANRLVKKGSLKKEHFREDLNGVLLTEEGMKIVTKAYNEELQKSVKHPKIGSNVTRQRLIRLEAYKLIKHLVGVEEYKPLVAWF