1.   b.81.1        Trimeric LpxA-like enzymes  superhelical turns are made of three short strands; duplication: the sequence hexapeptide repeats correspond to individual strands !   
                   Single-stranded left-handed beta-helix superhelix turns are made of parallel beta-strands and (short) turns
                   2jf3  d2jf3a1  A:161-168,173-178,179-184,243-256
                   2aq9  d2aq9a1  A:161-168,173-178,179-184,243-256
                   2qiv  d2qivx1  X:161-168,173-178,179-184,243-256
                   1lxa  d1lxaa_  A:161-168,173-178,179-184,243-256
                   2jf2  d2jf2a1  A:161-168,173-178,179-184,243-256
                   2qia  d2qiaa1  A:161-168,173-178,179-184,243-256

2.   c.23.16       Class I glutamine amidotransferase-like  conserved positions of the oxyanion hole and catalytic nucleophile; different constituent families contain different additional structures !   
                   Flavodoxin-like 3 layers, a/b/a; parallel beta-sheet of 5 strand, order 21345
                   1l9x  d1l9xb_  B:10-16,29-34,67-73,81-101
                   1l9x  d1l9xa_  A:10-16,29-34,67-73,81-101
                   1l9x  d1l9xc_  C:10-16,29-34,67-73,81-101
                   1l9x  d1l9xd_  D:10-16,29-34,67-73,81-101

3.   c.1.8         (Trans)glycosidases    
                   TIM beta/alpha-barrel contains parallel beta-sheet barrel, closed; n=8, S=8; strand order 12345678 ! the first seven superfamilies have similar phosphate-binding sites
                   1ktb  d1ktba2  A:98-107,107-111,135-142,145-164

4.   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
                   2b8t  d2b8td1  D:42-49,62-68,91-97,102-116
                   1znx  d1znxa1  A:21-28,96-103,114-120,188-201

List of motif hits that are not present in SCOP but are found in PDB for pattern ID: 75 (enumeration index: query126) of S4

3fs5  A:32-39,45-49,83-90,94-109
3i3x  A:156-163,168-173,174-179,238-251
3i3x  B:156-163,168-173,174-179,238-251
3i3x  C:156-163,168-173,174-179,238-251
3hsq  C:156-163,168-173,174-179,238-251
3f4a  B:32-39,45-49,84-90,92-109
3f4a  A:32-39,45-49,84-90,93-108
3a57  A:12-23,32-41,144-154,157-164
3kog  A:42-55,64-70,109-121,175-187
3i3a  C:156-163,168-173,174-179,238-251
3i3a  B:156-163,168-173,174-179,238-251
3i3a  A:156-163,168-173,174-179,238-251
2fgy  A:164-174,176-180,233-244,259-283
2fgy  B:164-174,176-180,233-244,259-283
3c8v  C:350-357,356-362,370-375,411-431
3c8v  D:350-357,356-362,370-375,411-431
3c8v  A:350-357,356-362,370-375,411-431
3c8v  B:350-357,356-362,370-375,411-431