This domain is part of the LAGLIDADG superfamily [1].

1: Crystal structure of I-DmoI in complex with its target DNA provides new insights into meganuclease engineering. Marcaida MJ, Prieto J, Redondo P, Nadra AD, Alibes A, Serrano L, Grizot S, Duchateau P, Paques F, Blanco FJ, Montoya G; Proc Natl Acad Sci U S A. 2008;105:16888-16893. PMID:18974222