Evolutionary classification of protein domain structures
alpha arraysalpha-helix arrays with mainly perpendicular helices
alpha bundlesalpha-helix bundles with mainly parallel helices
alpha superhelicesrepeating alpha-helix hairpins form a superhelix
alpha duplicates or obligate multimersalpha duplicates or monomers associate together to form a compact domain
alpha complex topologyalpha domain with complex and unique topology that cannot be described as array or bundle or superhelix
beta barrelssingle beta-sheet folded upon itself to form a barrel
Refs: Structure 14, 1489-1498; Current opinion in structural biology 18, 358-365
1265437, 2-crossover-3, 6-crossover-7
123654, 3-crossover-4
Representatives:
e2fomB1[B:18-167] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
polyprotein ; ligands: CL,GOL ; X-RAY DIFFRACTION 1.500Å
e7zw5B1[B:19-171] Image Pymol Jmol Links: PDB, SCOP, CATH
; ligands: JG0 ; X-RAY DIFFRACTION 1.38Å
e5lc0B1[B:-1-86,B:1017-1167] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS2B-NS3 protease,NS2B-NS3 protease ; ligands: 6T8 ; X-RAY DIFFRACTION 2.70Å
e5t1vA1[A:6-22,A:82-222] Image Pymol Jmol Links: PDB, SCOP, CATH
NS2B-NS3 protease,NS2B-NS3 protease ; X-RAY DIFFRACTION 3.10Å
e5t1vB1[B:6-26,B:80-223] Image Pymol Jmol Links: PDB, SCOP, CATH
NS2B-NS3 protease,NS2B-NS3 protease ; X-RAY DIFFRACTION 3.10Å
e5gxjA1[A:50-68,A:1018-1158] Image Pymol Jmol Links: PDB, SCOP, CATH
FLAVIVIRUS_NS2B,LINKER,Peptidase S7 ; X-RAY DIFFRACTION 2.6Å
e5gxjB1[B:48-68,B:1018-1158] Image Pymol Jmol Links: PDB, SCOP, CATH
FLAVIVIRUS_NS2B,LINKER,Peptidase S7 ; X-RAY DIFFRACTION 2.6Å
e2fp7B1[B:19-167] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Genome polyprotein ; X-RAY DIFFRACTION 1.68Å
e2ijoB1[B:19-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Polyprotein ; X-RAY DIFFRACTION 2.3Å
e2wzqA4[A:20-175] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 PROTEASE-HELICASE ; X-RAY DIFFRACTION 2.8Å
e3e90B1[B:0-175] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 PROTEASE ; ligands: NKK ; X-RAY DIFFRACTION 2.45Å
e2ggvB1[B:10-178] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
non-structural protein 3 ; X-RAY DIFFRACTION 1.8Å
e3e90D1[D:1-174] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 PROTEASE ; ligands: NKK ; X-RAY DIFFRACTION 2.45Å
e3u1jB1[B:6-171] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
SERINE PROTEASE NS3 ; X-RAY DIFFRACTION 1.8Å
e2whxA7[A:21-171] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
SERINE PROTEASE/NTPASE/HELICASE NS3 ; X-RAY DIFFRACTION 2.2Å
e2vbcA7[A:19-171] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
DENGUE 4 NS3 FULL-LENGTH PROTEIN ; X-RAY DIFFRACTION 3.15Å
e2wv9A7[A:18-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
FLAVIVIRIN PROTEASE NS2B REGULATORY SUBUNIT, FLAVIVIRIN PROTEASE NS3 CATALYTIC SUBUNIT ; X-RAY DIFFRACTION 2.75Å
e4r8tB1[B:18-158] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 ; ligands: CL ; X-RAY DIFFRACTION 2.133Å
e5lc0A1[A:-1-87,A:1015-1167] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS2B-NS3 protease,NS2B-NS3 protease ; ligands: 6T8 ; X-RAY DIFFRACTION 2.70Å
e5gj4D1[D:19-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Serine protease NS3 ; ligands: CL ; X-RAY DIFFRACTION 1.84Å
e5gj4F1[F:19-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Serine protease NS3 ; ligands: CL ; X-RAY DIFFRACTION 1.84Å
e5gj4H1[H:19-171] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Serine protease NS3 ; ligands: CL ; X-RAY DIFFRACTION 1.84Å
e5gpiH1[H:12-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; X-RAY DIFFRACTION 1.578Å
e5gpiD1[D:18-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; X-RAY DIFFRACTION 1.578Å
e5gpiF1[F:19-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; X-RAY DIFFRACTION 1.578Å
e5h4iB1[B:17-171] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; ligands: 7HQ,ACT ; X-RAY DIFFRACTION 2.00Å
e5h6vB1[B:17-171] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Genome polyprotein ; ligands: 7HS ; X-RAY DIFFRACTION 2.42Å
e5tfnA1[A:50-69,A:1016-1160] Image Pymol Jmol Links: PDB, SCOP, CATH
NS2B-NS3 Protease CHIMERA,Genome polyprotein ; X-RAY DIFFRACTION 3.0Å
e5tfnB1[B:49-66,B:1016-1157] Image Pymol Jmol Links: PDB, SCOP, CATH
NS2B-NS3 Protease CHIMERA,Genome polyprotein ; X-RAY DIFFRACTION 3.0Å
e5tfoA1[A:50-68,A:1018-1158] Image Pymol Jmol Links: PDB, SCOP, CATH
NS2B-NS3 Protease CHIMERA,NS2B-NS3 PROTEASE,NS2B-NS3 Protease CHIMERA ; X-RAY DIFFRACTION 2.51Å
e5tfoB1[B:49-64,B:1016-1157] Image Pymol Jmol Links: PDB, SCOP, CATH
NS2B-NS3 Protease CHIMERA,NS2B-NS3 PROTEASE,NS2B-NS3 Protease CHIMERA ; X-RAY DIFFRACTION 2.51Å
e5yodB1[B:17-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; ligands: BEZ ; X-RAY DIFFRACTION 1.9Å
e5yodD1[D:17-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; ligands: BEZ ; X-RAY DIFFRACTION 1.9Å
e5yodF1[F:17-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; ligands: BEZ ; X-RAY DIFFRACTION 1.9Å
e5yodH1[H:17-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; ligands: BEZ ; X-RAY DIFFRACTION 1.9Å
e5zmqH1[H:12-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Serine protease NS3 ; X-RAY DIFFRACTION 1.987Å
e5yvjB2[B:18-171] Image Pymol Jmol Links: PDB, SCOP, CATH
Genome polyprotein ; X-RAY DIFFRACTION 2.508Å
e5yvuB2[B:2-171] Image Pymol Jmol Links: PDB, SCOP, CATH
Genome polyprotein ; ligands: GOL ; X-RAY DIFFRACTION 2.491Å
e5yvyB2[B:24-171] Image Pymol Jmol Links: PDB, SCOP, CATH
Genome polyprotein ; X-RAY DIFFRACTION 3.20Å
e5zmsB1[B:16-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; X-RAY DIFFRACTION 1.8Å
e5zmsE1[E:16-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; X-RAY DIFFRACTION 1.8Å
e5zmsH1[H:16-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; X-RAY DIFFRACTION 1.8Å
e5zmsK1[K:16-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; X-RAY DIFFRACTION 1.8Å
e5zobB1[B:15-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; X-RAY DIFFRACTION 1.7Å
e5zobD1[D:15-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; X-RAY DIFFRACTION 1.7Å
e5zobH1[H:17-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; X-RAY DIFFRACTION 1.7Å
e5zobF1[F:17-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; X-RAY DIFFRACTION 1.7Å
e5zmqB1[B:16-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Serine protease NS3 ; X-RAY DIFFRACTION 1.987Å
e5zmqD1[D:13-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Serine protease NS3 ; X-RAY DIFFRACTION 1.987Å
e5zmqF1[F:18-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Serine protease NS3 ; X-RAY DIFFRACTION 1.987Å
e5yvwB3[B:20-171] Image Pymol Jmol Links: PDB, SCOP, CATH
Genome polyprotein ; X-RAY DIFFRACTION 3.10Å
e5yw1B2[B:4-171] Image Pymol Jmol Links: PDB, SCOP, CATH
Peptidase S7 ; X-RAY DIFFRACTION 2.6Å
e5yvv.1[A:49-88,B:20-170] Image Pymol Jmol Links: PDB, SCOP, CATH
Genome polyprotein ; X-RAY DIFFRACTION 3.10Å
e6jpwD1[D:12-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; X-RAY DIFFRACTION 1.951Å
e6jpwB1[B:17-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; X-RAY DIFFRACTION 1.951Å
e6jpwF1[F:17-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; X-RAY DIFFRACTION 1.951Å
e6jpwH1[H:17-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; X-RAY DIFFRACTION 1.951Å
e6urvH1[H:18-171] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; X-RAY DIFFRACTION 2.9Å
e6urvF1[F:17-171] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; X-RAY DIFFRACTION 2.9Å
e6urvD1[D:19-171] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; X-RAY DIFFRACTION 2.9Å
e6urvB1[B:18-171] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; X-RAY DIFFRACTION 2.9Å
e6um3B1[B:49-68,B:1018-1158] Image Pymol Jmol Links: PDB, SCOP, CATH
NS2B-NS3 PROTEASE fusion ; X-RAY DIFFRACTION 2.50Å
e6um3A1[A:49-68,A:1018-1157] Image Pymol Jmol Links: PDB, SCOP, CATH
NS2B-NS3 PROTEASE fusion ; ligands: EDO ; X-RAY DIFFRACTION 2.50Å
e6kk5B1[B:17-169] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; ligands: DE6 ; X-RAY DIFFRACTION 2.03Å
e6kk6B1[B:18-169] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; ligands: DV0,GOL,SO4 ; X-RAY DIFFRACTION 1.74Å
e6kpqB1[B:17-169] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; ligands: DT0 ; X-RAY DIFFRACTION 2.620Å
e6kk2B1[B:17-171] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; ligands: D9U ; X-RAY DIFFRACTION 2.020Å
e6kk4B1[B:17-177] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; ligands: DE0,GOL ; X-RAY DIFFRACTION 1.74Å
e6y3bB1[B:18-176] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Genome polyprotein ; ligands: GOL,O7N,SO4 ; X-RAY DIFFRACTION 1.589Å
e6kk3B1[B:17-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Genome polyprotein ; ligands: DUU ; X-RAY DIFFRACTION 2.050Å
e6l50B1[B:17-171] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; X-RAY DIFFRACTION 1.95Å
e6l50D1[D:17-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; X-RAY DIFFRACTION 1.95Å
e6l4zB1[B:16-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Genome polyprotein ; X-RAY DIFFRACTION 1.9Å
e6l4zD1[D:18-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Genome polyprotein ; X-RAY DIFFRACTION 1.9Å
e6l4zF1[F:19-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Genome polyprotein ; X-RAY DIFFRACTION 1.9Å
e6l4zH1[H:12-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Genome polyprotein ; ligands: E5X ; X-RAY DIFFRACTION 1.9Å
e6l50F1[F:18-169] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; X-RAY DIFFRACTION 1.95Å
e6l50H1[H:19-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; ligands: E60 ; X-RAY DIFFRACTION 1.95Å
e7m1vA1[A:45-68,A:1018-1159] Image Pymol Jmol Links: PDB, SCOP, CATH
Core protein ; ligands: CL,EDO,YO1 ; X-RAY DIFFRACTION 1.6Å
e7docF1[F:14-171] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Core protein ; X-RAY DIFFRACTION 1.904Å
e7m1vB1[B:47-68,B:1018-1158] Image Pymol Jmol Links: PDB, SCOP, CATH
Core protein ; ligands: DMS,EDO ; X-RAY DIFFRACTION 1.6Å
e7docB1[B:17-169] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Core protein ; X-RAY DIFFRACTION 1.904Å
e7docD1[D:18-169] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Core protein ; X-RAY DIFFRACTION 1.904Å
e7docH1[H:18-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Genome polyprotein ; X-RAY DIFFRACTION 1.904Å
e7vmvB1[B:18-180] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Core protein ; X-RAY DIFFRACTION 3.351Å
e7vmvD1[D:17-169] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Core protein ; X-RAY DIFFRACTION 3.351Å
e7vmvF1[F:17-171] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Core protein ; X-RAY DIFFRACTION 3.351Å
e7vmvH1[H:3-173] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Core protein ; X-RAY DIFFRACTION 3.351Å
e7obvB1[B:16-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Serine protease NS3 ; X-RAY DIFFRACTION 1.30Å
e7pfqB1[B:18-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Serine protease NS3 ; X-RAY DIFFRACTION 1.45Å
e7pfyB1[B:18-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Serine protease NS3 ; X-RAY DIFFRACTION 1.38Å
e7pgcB1[B:16-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Serine protease NS3 ; X-RAY DIFFRACTION 1.55Å
e7vlhB1[B:18-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; ligands: 7Q3,SO4 ; X-RAY DIFFRACTION 2.620Å
e7vliB1[B:17-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; ligands: 7QG,SO4 ; X-RAY DIFFRACTION 2.385Å
e7o55B1[B:18-171] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Serine protease NS3 ; X-RAY DIFFRACTION 1.95Å
e7oc2B1[B:17-171] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Serine protease NS3 ; X-RAY DIFFRACTION 1.50Å
e7zysB1[B:18-171] Image Pymol Jmol Links: PDB, SCOP, CATH
Serine protease NS3 ; ligands: KNR ; X-RAY DIFFRACTION 1.26Å
e7vxxB1[B:18-168] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Serine protease NS3 ; X-RAY DIFFRACTION 1.900Å
e7vxxD1[D:13-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Serine protease NS3 ; ligands: PBZ ; X-RAY DIFFRACTION 1.900Å
e7vxyB1[B:18-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Serine protease NS3 ; X-RAY DIFFRACTION 1.900Å
e7vxyD1[D:13-173] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Serine protease NS3 ; X-RAY DIFFRACTION 1.900Å
e7o2mB1[B:17-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Genome polyprotein ; ligands: UZZ ; X-RAY DIFFRACTION 1.90Å
e7pfzB1[B:17-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Serine protease NS3 ; X-RAY DIFFRACTION 1.45Å
e7pg1B1[B:17-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Serine protease NS3 ; X-RAY DIFFRACTION 1.95Å
e7vlgB1[B:17-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NS3 protease ; ligands: 7PZ ; X-RAY DIFFRACTION 1.771Å
e7znoB1[B:17-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Serine protease NS3 ; ligands: JQI ; X-RAY DIFFRACTION 1.70Å
e8aqaB1[B:17-171] Image Pymol Jmol Links: PDB, SCOP, CATH
Serine protease NS3 ; X-RAY DIFFRACTION 1.35Å
e8aqbB1[B:17-171] Image Pymol Jmol Links: PDB, SCOP, CATH
Serine protease NS3 ; X-RAY DIFFRACTION 1.28Å
e7zldB1[B:17-171] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Serine protease NS3 ; ligands: IY3 ; X-RAY DIFFRACTION 1.61Å
e8aqkB1[B:17-170] Image Pymol Jmol Links: PDB, SCOP, CATH
Serine protease NS3 ; ligands: SO4 ; X-RAY DIFFRACTION 1.20Å
e7zlcB1[B:17-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Serine protease NS3 ; ligands: IXU ; X-RAY DIFFRACTION 1.75Å
e7zmiB1[B:17-170] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Serine protease NS3 ; ligands: IXJ ; X-RAY DIFFRACTION 2.15Å
e7zqfB1[B:18-170] Image Pymol Jmol Links: PDB, SCOP, CATH
Serine protease NS3 ; ligands: GOL,JW6 ; X-RAY DIFFRACTION 1.68Å
e7zwkB1[B:18-170] Image Pymol Jmol Links: PDB, SCOP, CATH
Serine protease NS3 ; ligands: SO4 ; X-RAY DIFFRACTION 2.00Å
e7zpdB1[B:17-171] Image Pymol Jmol Links: PDB, SCOP, CATH
Serine protease NS3 ; ligands: JVC ; X-RAY DIFFRACTION 1.40Å
e7zq1B1[B:18-171] Image Pymol Jmol Links: PDB, SCOP, CATH
Serine protease NS3 ; ligands: JVL ; X-RAY DIFFRACTION 1.52Å
e7ztmB1[B:17-170] Image Pymol Jmol Links: PDB, SCOP, CATH
Serine protease NS3 ; ligands: JVU ; X-RAY DIFFRACTION 1.45Å
e7zumB1[B:17-170] Image Pymol Jmol Links: PDB, SCOP, CATH
Serine protease NS3 ; ligands: JN9 ; X-RAY DIFFRACTION 1.75Å
e7zv4B1[B:17-170] Image Pymol Jmol Links: PDB, SCOP, CATH
Serine protease NS3 ; ligands: IBW ; X-RAY DIFFRACTION 1.69Å
e8a15B1[B:18-171] Image Pymol Jmol Links: PDB, SCOP, CATH
; ligands: KPO ; X-RAY DIFFRACTION 1.23Å
e8pn6B1[B:16-171] Image Pymol Jmol Links: PDB, SCOP, CATH
; X-RAY DIFFRACTION 1.60Å
e7zvvB1[B:17-170] Image Pymol Jmol Links: PDB, SCOP, CATH
Serine protease NS3 ; ligands: 3CF,4CF,V7T,V8N,ZAL ; X-RAY DIFFRACTION 1.75Å
Pseudo group of domains that do not map to PFam family profiles. Domains inside should not be considered as in one family.
123654, 3-crossover-4, swapping
beta meanderssingle beta-sheet with mainly meander topology
beta sandwichestwo beta-sheets stacked together to form a sandwich
beta duplicates or obligate multimersbeta duplicates or monomers associate together to form a compact domain
beta complex topologybeta domains with complex and unique topology that cannot be described as barrel or sandwich or meander
a+b two layersone alpha-helix layer and one beta-sheet layer
a+b three layersone mainly antiparallel beta-sheet layer sandwiched between two alpha-helix layers
a+b four layerstwo beta-sheet layers sandwiched between two alpha-helix layers
a+b complex topologyalpha and beta domain with complex and unique topology that cannot be described in layers
a+b duplicates or obligate multimersalpha and beta duplicates or monomers associated together to form a compact domain
a/b barrelsrepeating beta-alpha units form a barrel
a/b three-layered sandwichesrepeating beta-alpha units form a sandwich with a mainly parallel beta-sheet layer stacked between two alpha-helix layers
mixed a+b and a/balpha and beta domain consists of both a+b and a/b regions
few secondary structure elementsstabilized by cofactors or disulfides
extended segmentsextended, non-globular segments, frequently bind to other proteins to form complexes