This domain can be found in the hyperthermophilic archaeon Thermococcus kodakaraensis Pol-2 intein. It is suggested to be a potential DNA binding domain [1, 2].

1: Crystal structure of intein homing endonuclease II encoded in DNA polymerase gene from hyperthermophilic archaeon Thermococcus kodakaraensis strain KOD1. Matsumura H, Takahashi H, Inoue T, Yamamoto T, Hashimoto H, Nishioka M, Fujiwara S, Takagi M, Imanaka T, Kai Y; Proteins. 2006;63:711-715. PMID:16493661

2: Structural and mutational studies of a hyperthermophilic intein from DNA polymerase II of Pyrococcus abyssi. Du Z, Liu J, Albracht CD, Hsu A, Chen W, Marieni MD, Colelli KM, Williams JE, Reitter JN, Mills KV, Wang C; J Biol Chem. 2011;286:38638-38648. PMID:21914805