This entry was previously the N terminal portion of DUF524 (Pfam:PF04411) before it was split into two. This domain has no known function. It is predicted to adopt an all beta secondary structure pattern followed by mainly alpha-helical structures [1].

1: Realm of PD-(D/E)XK nuclease superfamily revisited: detection of novel families with modified transitive meta profile searches. Knizewski L, Kinch LN, Grishin NV, Rychlewski L, Ginalski K; BMC Struct Biol. 2007;7:40. PMID:17584917