>sp|A9A2X4|PCNA_NITMS DNA polymerase sliding clamp OS=Nitrosopumilus maritimus GN=pcn MTFGAKTSGSDDLKAIISAISTLVEEATFVATAEGISFRGMDPSHVALIDISWPNSAFEK YECDSDIKFGVRIDEFSKLIKRADKKDSIEISISEQNMLLVTVGKNKKYKMRLIESSATD TPLPKIPYDSKIILSSSKFDKILGDVQVVSDYLTIHTSDSKGDFSGKGDSGEVVIDLDKD DEGIEEISSKEDSVGTYSLEYLNPVVKAVGTTAGFITCEFSSAKPLRIEFKVANIGRIHF YLAPRVES