>2CWJ_1|Chain A|putative endonuclease|Aeropyrum pernix (272557) METAPKPVGPYSQAVESGCFMFVSGQIPINPETGALEEGGFKESAKRALDNLKAIVEGAGYSMDDIVKVTVYITDISRFSEFNEVYREYFNRPYPARAVVGVAALPLGAPLEVEAVLYTCRRK