6. d.153.2 Archaeal IMP cyclohydrolase PurO has a putative active site in the same topological location as the Ntn hydrolase but lacks the N-terminal nucleophile ! Ntn hydrolase-like 4 layers: alpha/beta/beta/alpha; has an unusual sheet-to-sheet packing 1kuu d1kuua_ A:58-66,67-73,74-87,195-202 2ntk d2ntkb1 B:58-66,67-73,74-87,195-202 2ntk d2ntkd1 D:58-66,67-73,74-87,195-202 2ntk d2ntka1 A:58-66,67-73,74-87,195-202 2ntl d2ntlc1 C:58-66,67-73,74-87,195-202 2ntl d2ntla1 A:58-66,67-73,74-87,195-202 2ntk d2ntkc1 C:58-66,67-73,74-87,195-202 2ntl d2ntld1 D:58-66,67-73,74-87,195-202 2ntl d2ntlb1 B:58-66,67-73,74-87,195-202 2ntm d2ntmc1 C:58-66,67-73,74-87,195-202 2ntm d2ntmb1 B:58-66,67-73,74-87,195-202 2ntm d2ntma1 A:58-66,67-73,74-87,195-202 2ntm d2ntmd1 D:58-66,67-73,74-87,195-202 7. b.97.1 Cytolysin/lectin some topological similarity to osmotin ! Cytolysin/lectin sandwich, 10 strands in 2 sheets; 1y2x d1y2xc_ C:61-73,74-83,89-100,134-143 1x99 d1x99a_ A:64-75,77-85,91-102,136-145 1x99 d1x99b_ B:64-75,77-85,91-102,136-145 1y2x d1y2xa_ A:61-73,74-82,89-100,134-143 1y2v d1y2va_ A:61-73,75-82,89-100,134-143 1y2u d1y2ua_ A:61-73,75-82,89-100,134-143 1y2x d1y2xb_ B:61-73,75-82,89-100,134-143 1y2w d1y2wa_ A:61-73,75-82,89-100,134-143 1y2t d1y2ta_ A:61-73,75-82,89-100,134-143 1y2u d1y2ub_ B:61-73,75-82,89-100,134-143 1y2t d1y2tb_ B:61-73,75-82,89-100,134-143 1y2w d1y2wb_ B:61-73,75-82,89-100,134-143 1y2v d1y2vb_ B:61-73,75-83,89-100,134-143 1y2x d1y2xd_ D:61-73,75-82,89-100,134-143 1iaz d1iaza_ A:97-108,114-124,129-141,168-178 1tzq d1tzqa_ A:97-108,114-124,129-141,168-178 1o72 d1o72b_ B:95-106,113-122,127-138,165-175 1iaz d1iazb_ B:97-108,114-124,129-141,168-179 1gwy d1gwyb_ B:95-106,113-122,127-138,165-175 1gwy d1gwya_ A:95-106,113-122,127-138,165-175 1o71 d1o71b_ B:95-106,113-122,127-138,165-175 1o71 d1o71a_ A:95-106,113-122,127-138,165-175 1o72 d1o72a_ A:95-106,112-122,127-138,165-175 1y2v d1y2va_ A:61-73,75-82,89-100,112-119 1y2u d1y2ua_ A:61-73,75-82,89-100,112-119 1y2t d1y2ta_ A:61-73,75-82,89-100,112-119 1y2w d1y2wb_ B:61-73,75-82,89-100,112-119 1y2t d1y2tb_ B:61-73,75-82,89-100,112-119 1y2u d1y2ub_ B:61-73,75-82,89-100,112-119 1y2x d1y2xb_ B:61-73,75-82,89-100,112-119 1y2x d1y2xa_ A:61-73,74-82,89-100,112-119 9. d.219.1 PP2C-like contain binuclear metal (Mn) centre ! PP2C-like 4 layers: alpha/beta/beta/alpha; antiparallel beta sheets 1txo d1txoa_ A:24-31,32-41,44-64,184-191 1a6q d1a6qa2 A:37-45,50-63,64-75,230-239 1txo d1txob_ B:24-31,32-41,44-63,182-191 11. d.58.29 Nucleotide cyclase common fold is elaborated with additional secondary structures ! Ferredoxin-like alpha+beta sandwich with antiparallel beta-sheet; (beta-alpha-beta)x2 2gvz d2gvza1 A:388-398,440-447,454-471,504-508 2gvd d2gvda1 A:389-398,440-447,452-466,503-508 1wc6 d1wc6a_ A:1010-1019,1061-1068,1074-1104,1135-1142 1wc6 d1wc6b_ B:1010-1019,1061-1068,1074-1104,1135-1142 1wc6 d1wc6c_ C:1010-1019,1061-1068,1074-1104,1135-1142 1tl7 d1tl7a_ A:389-398,440-447,454-478,504-508 1ab8 d1ab8b_ B:883-892,942-949,965-991,1015-1021 1cjt d1cjta_ A:389-398,440-447,454-478,503-508 1tl7 d1tl7b_ B:883-892,942-949,966-991,1014-1021 1u0h d1u0ha_ A:389-398,440-447,454-478,504-508 2gvz d2gvzb1 B:884-892,942-949,964-991,1015-1021 1cs4 d1cs4a_ A:389-398,440-447,454-478,504-508 1cju d1cjua_ A:389-398,440-447,454-478,504-508 1cjv d1cjva_ A:389-398,440-447,454-478,504-508 1cul d1cula_ A:389-398,440-447,452-478,504-508 1ab8 d1ab8a_ A:883-892,942-949,965-991,1014-1021 1cju d1cjub_ B:883-892,942-949,966-991,1017-1021 1wc5 d1wc5b_ B:1010-1019,1061-1068,1074-1104,1135-1142 2gvd d2gvdb1 B:883-892,942-949,964-991,1014-1021 1u0h d1u0hb_ B:883-892,942-949,964-991,1014-1021 1cjk d1cjka_ A:389-398,440-447,452-478,504-508 1azs d1azsa_ A:388-399,440-447,454-478,504-508 1azs d1azsb_ B:883-892,942-949,964-991,1015-1021 1cul d1culb_ B:883-892,942-949,963-991,1017-1021 1cs4 d1cs4b_ B:883-892,942-949,964-991,1017-1021 1cjt d1cjtb_ B:883-892,942-949,964-991,1017-1021 1cjv d1cjvb_ B:883-892,942-949,964-991,1017-1021 1cjk d1cjkb_ B:883-892,942-949,964-991,1017-1021 1wc3 d1wc3a_ A:1010-1020,1061-1068,1074-1104,1134-1142 16. d.280.1 Sulfolobus fructose-1,6-bisphosphatase-like Sulfolobus fructose-1,6-bisphosphatase-like 4 layers: a/b/b/a; antiparallel beta sheets; similarities to ferredoxin-like fold (scop_cf 54861) in the N-terminal part (1-120) and to the Bacterial S-adenosylmethionine decarboxylase subunit (scop_fa 997656) in the C-terminal part (121-340) 1umg d1umga_ A:3-12,53-62,67-89,290-301