1. c.66.1 S-adenosyl-L-methionine-dependent methyltransferases S-adenosyl-L-methionine-dependent methyltransferases core: 3 layers, a/b/a; mixed beta-sheet of 7 strands, order 3214576; strand 7 is antiparallel to the rest 1boo d1booa_ A:21-26,27-33,277-287,287-295,329-333