1.   e.10.1        Prokaryotic type I DNA topoisomerase  duplication: the protein chain passing through the domains 2-4 makes two structural repeats ! The active site is formed by the toprim and "winged helix" domains (domains 1 and 4); these two domains are also found in the type II topoisomerase (DNA gyrase A) and in the alpha subunit of topoisomerase IV !   
                   Prokaryotic type I DNA topoisomerase 4 domains: (1) Toprim alpha/beta; (2&4) "winged helix"-like; (3) barrel: n=6, S=8
                   1gku  d1gkub3  B:72-77,504-513,534-542,544-553,662-673
                   1gl9  d1gl9c3  C:72-77,505-513,534-543,544-553,662-673
                   1gl9  d1gl9b3  B:72-77,505-513,534-543,544-553,662-673

2.   c.37.1        P-loop containing nucleoside triphosphate hydrolases  division into families based on beta-sheet topologies !   
                   P-loop containing nucleoside triphosphate hydrolases 3 layers: a/b/a, parallel or mixed beta-sheets of variable sizes
                   1lnz  d1lnzb2  B:2-19,160-165,196-203,205-212,315-331

List of motif hits that are not present in SCOP but are found in PDB for pattern ID: 364 (enumeration index: query743.754.1829) of S5

3dz8  A:11-16,22-29,58-68,69-77,171-187
3qpb  L:14-18,23-30,52-61,62-71,237-257
3qpb  N:14-18,23-30,52-61,62-71,237-257
3qpb  C:14-18,23-30,52-61,62-71,237-257
2dby  A:39-45,64-69,283-291,293-302,305-315
2dwq  A:39-45,64-69,283-291,293-302,305-315