1. d.219.1 PP2C-like contain binuclear metal (Mn) centre ! PP2C-like 4 layers: alpha/beta/beta/alpha; antiparallel beta sheets 1a6q d1a6qa2 A:21-32,37-45,263-279,281-292 1txo d1txoa_ A:6-17,24-31,210-226,229-240 1txo d1txob_ B:6-17,24-31,210-226,229-240