1. c.55.1 Actin-like ATPase domain duplication contains two domains of this fold ! Ribonuclease H-like motif 3 layers: a/b/a; mixed beta-sheet of 5 strands, order 32145; strand 2 is antiparallel to the rest 2zhc d2zhca2 A:142-148,165-173,174-183,274-280,280-290
3oz2 A:46-50,70-77,82-86,195-202,353-368