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
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




Representatives:
e1wuiL3[L:19-59,L:512-552]
nonrep
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Periplasmic [NiFe] hydrogenase large subunit ; ligands: MG,NFC ; X-RAY DIFFRACTION 1.04Å
e1wuiL4[L:60-102,L:463-511]
nonrep
Image
Pymol
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Periplasmic [NiFe] hydrogenase large subunit ; ligands: MG,NFC,SF4 ; X-RAY DIFFRACTION 1.04Å
e1ublL5[L:19-59,L:512-552]
nonrep
Image
Pymol
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Periplasmic [NiFe] hydrogenase Large subunit ; ligands: CMO,FNE,MG ; X-RAY DIFFRACTION 1.12Å
e1ublL6[L:60-102,L:463-511]
nonrep
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Periplasmic [NiFe] hydrogenase Large subunit ; ligands: CMO,FNE,MG,MPD,SF4 ; X-RAY DIFFRACTION 1.12Å
e1cc1L3[L:12-48,L:458-498]
nonrep
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HYDROGENASE (LARGE SUBUNIT) ; ligands: FCO,FE2,NI ; X-RAY DIFFRACTION 2.15Å
e1cc1L4[L:49-91,L:409-457]
nonrep
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HYDROGENASE (LARGE SUBUNIT) ; ligands: FCO,FE2,H2S,NI,SF4 ; X-RAY DIFFRACTION 2.15Å
e6gamM2[M:38-80,M:464-511] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hydrogenase-2 large chain ; ligands: FCO,MG,NI,SF4 ; X-RAY DIFFRACTION 1.400Å
e6ganL1[L:38-80,L:464-511] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hydrogenase-2 large chain ; ligands: FCO,MG,NI,SF4 ; X-RAY DIFFRACTION 1.6Å
e6ganM1[M:38-80,M:464-511] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hydrogenase-2 large chain ; ligands: FCO,MG,NI,SF4 ; X-RAY DIFFRACTION 1.6Å
e6fpoL3[L:54-97,L:488-540] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hydrogenase-1 large chain ; ligands: FCO,LI,MG,NI,SF3 ; X-RAY DIFFRACTION 1.050Å
e6fpoM1[M:54-97,M:488-540] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hydrogenase-1 large chain ; ligands: FCO,MG,NI,SF3 ; X-RAY DIFFRACTION 1.050Å
e6fpwL1[L:54-97,L:488-540] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hydrogenase-1 large chain ; ligands: EJ2,MG,SF3 ; X-RAY DIFFRACTION 1.350Å
e6fpwM3[M:54-97,M:488-540] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hydrogenase-1 large chain ; ligands: EJ2,MG,SF3 ; X-RAY DIFFRACTION 1.350Å
e6g7rL2[L:55-97,L:490-541] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hydrogenase-1 large chain ; ligands: EJ2,MG,SF3 ; X-RAY DIFFRACTION 1.2Å
e6g7rM1[M:55-97,M:490-541] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hydrogenase-1 large chain ; ligands: EJ2,MG,SF3 ; X-RAY DIFFRACTION 1.2Å
e6galL2[L:55-97,L:490-541] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hydrogenase-1 large chain ; ligands: EJ2,MG,SF3 ; X-RAY DIFFRACTION 1.250Å
e6galM4[M:55-97,M:490-541] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hydrogenase-1 large chain ; ligands: EJ2,LI,MG,SF3 ; X-RAY DIFFRACTION 1.250Å
e6g7mL2[L:38-80,L:464-511] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Hydrogenase-2 large chain ; ligands: FCO,MG,NI,SF4 ; X-RAY DIFFRACTION 1.71Å
e6g7mM2[M:38-80,M:464-511] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Hydrogenase-2 large chain ; ligands: FCO,MG,NI,SF4 ; X-RAY DIFFRACTION 1.71Å
e6rtpB1[B:54-96,B:406-454] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Periplasmic [NiFeSe] hydrogenase, large subunit, selenocysteine-containing ; ligands: 6ML,CL,FCO,FE2,GOL,H2S,NI,SF4 ; X-RAY DIFFRACTION 1.100Å
e6ru9B4[B:54-96,B:406-454] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Periplasmic [NiFeSe] hydrogenase, large subunit, selenocysteine-containing ; ligands: 6ML,FCO,FE2,H2S,NI,SF4 ; X-RAY DIFFRACTION 1.355Å
e6rucB2[B:54-96,B:406-454] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Periplasmic [NiFeSe] hydrogenase, large subunit, selenocysteine-containing ; ligands: 6ML,CL,FCO,FE2,H2S,NI,SF4 ; X-RAY DIFFRACTION 1.200Å
e6qgrA2[A:366-438] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Coenzyme F420 hydrogenase subunit alpha ; ligands: BU3,FE,MPD,NFU ; X-RAY DIFFRACTION 1.839Å
e6qgtA2[A:366-438] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
F420-reducing hydrogenase, subunit alpha ; ligands: FE,J52 ; X-RAY DIFFRACTION 1.988Å
e6qiiA2[A:366-438] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Coenzyme F420 hydrogenase subunit alpha ; ligands: FE,NFU ; X-RAY DIFFRACTION 2.28Å
e5odcF2[F:40-82,F:360-407] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methyl-viologen reducing hydrogenase subunit A ; ligands: CA,MG,NFU,SF4 ; X-RAY DIFFRACTION 2.30Å
e5odcL1[L:40-82,L:360-407] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methyl-viologen reducing hydrogenase subunit A ; ligands: CA,NFU,SF4 ; X-RAY DIFFRACTION 2.30Å
e5odhF2[F:40-82,F:360-407] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methyl-viologen reducing hydrogenase, subunit A ; ligands: FE,NFU,SF4 ; X-RAY DIFFRACTION 2.20Å
e5odhL2[L:40-82,L:360-407] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methyl-viologen reducing hydrogenase, subunit A ; ligands: FE,NFU,SF4 ; X-RAY DIFFRACTION 2.20Å
e5odiF3[F:40-82,F:360-407] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methyl-viologen reducing hydrogenase, subunit A ; ligands: FE,NFU ; X-RAY DIFFRACTION 2.4Å
e5odqF2[F:40-82,F:360-407] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methyl-viologen reducing hydrogenase, subunit A ; ligands: FE,NFU,SF4 ; X-RAY DIFFRACTION 2.15Å
e5odqL1[L:40-82,L:360-407] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methyl-viologen reducing hydrogenase, subunit A ; ligands: FE,NFU,SF4 ; X-RAY DIFFRACTION 2.15Å
e5odrF2[F:40-82,F:360-407] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methyl-viologen reducing hydrogenase, subunit A ; ligands: ACT,FE,NFU,SF4 ; X-RAY DIFFRACTION 2.20Å
e5odrL1[L:40-82,L:360-407] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methyl-viologen reducing hydrogenase, subunit A ; ligands: FE,NFU,SF4 ; X-RAY DIFFRACTION 2.20Å
e6rp2L3[L:55-97,L:490-541] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hydrogenase-1 large chain ; ligands: FCO,LI,MG,NI,SF3 ; X-RAY DIFFRACTION 1.35Å
e6rp2M3[M:54-97,M:488-540] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hydrogenase-1 large chain ; ligands: FCO,LI,MG,NI,SF3 ; X-RAY DIFFRACTION 1.35Å
e6z7rB3[B:54-96,B:406-454] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Periplasmic [NiFeSe] hydrogenase, large subunit, selenocysteine-containing ; ligands: 6ML,CL,FCO,FE2,H2S,NI,SF4 ; X-RAY DIFFRACTION 1.76Å
e6z7rD3[D:54-96,D:406-454] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Periplasmic [NiFeSe] hydrogenase, large subunit, selenocysteine-containing ; ligands: 6ML,CL,FCO,FE2,H2S,KR,NI,SF4 ; X-RAY DIFFRACTION 1.76Å
e6z8jB3[B:54-96,B:406-454] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Periplasmic [NiFeSe] hydrogenase, large subunit, selenocysteine-containing ; ligands: 6ML,CL,FCO,FE2,GOL,H2S,NI,SF4 ; X-RAY DIFFRACTION 1.09Å
e6z8jD1[D:54-96,D:406-454] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Periplasmic [NiFeSe] hydrogenase, large subunit, selenocysteine-containing ; ligands: 6ML,CL,FCO,FE2,H2S,NI,SF4 ; X-RAY DIFFRACTION 1.09Å
e6z8mB2[B:54-96,B:406-454] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Periplasmic [NiFeSe] hydrogenase, large subunit, selenocysteine-containing ; ligands: 6ML,CL,FCO,FE2,H2S,NI,SF4 ; X-RAY DIFFRACTION 1.02Å
e6z9oB1[B:54-96,B:406-454] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Periplasmic [NiFeSe] hydrogenase, large subunit, selenocysteine-containing ; ligands: 6ML,FCO,FE2,H2S,NI,SF4 ; X-RAY DIFFRACTION 1.53Å
e6za1B1[B:54-96,B:406-454] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Periplasmic [NiFeSe] hydrogenase, large subunit, selenocysteine-containing ; ligands: 6ML,FCO,FE2,H2S,NI,SF4 ; X-RAY DIFFRACTION 1.37Å
e6z8oB3[B:54-96,B:406-454] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Periplasmic [NiFeSe] hydrogenase, large subunit, selenocysteine-containing ; ligands: 6ML,CL,FCO,FE2,H2S,NI,SF4 ; X-RAY DIFFRACTION 2.20Å
e6z8oD1[D:54-96,D:406-454] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Periplasmic [NiFeSe] hydrogenase, large subunit, selenocysteine-containing ; ligands: 6ML,CL,FCO,FE2,H2S,NI,SF4 ; X-RAY DIFFRACTION 2.20Å
e6z9gB2[B:54-96,B:406-454] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Periplasmic [NiFeSe] hydrogenase, large subunit, selenocysteine-containing ; ligands: 6ML,CL,FCO,FE2,H2S,NI,SF4 ; X-RAY DIFFRACTION 1.76Å
e6z9gD2[D:54-96,D:406-454] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Periplasmic [NiFeSe] hydrogenase, large subunit, selenocysteine-containing ; ligands: 6ML,CL,FCO,FE2,H2S,NI,SF4 ; X-RAY DIFFRACTION 1.76Å
e6z9gF3[F:54-96,F:406-454] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Periplasmic [NiFeSe] hydrogenase, large subunit, selenocysteine-containing ; ligands: 6ML,CL,FCO,FE2,H2S,NI,SF4 ; X-RAY DIFFRACTION 1.76Å
e6z9gH2[H:54-96,H:406-454] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Periplasmic [NiFeSe] hydrogenase, large subunit, selenocysteine-containing ; ligands: 6ML,CL,FCO,FE2,H2S,NI,SF4 ; X-RAY DIFFRACTION 1.76Å
e6syoLLL4[LLL:38-80,LLL:464-511] Image Pymol Jmol Links: PDB, SCOP, CATH
Hydrogenase-2 large chain ; ligands: FCO,MG,NI,OXY,SF4 ; X-RAY DIFFRACTION 1.25Å
e6syoMMM3[MMM:38-80,MMM:464-511] Image Pymol Jmol Links: PDB, SCOP, CATH
Hydrogenase-2 large chain ; ligands: FCO,MG,NI,OXY,SF4 ; X-RAY DIFFRACTION 1.25Å
e6syxLLL3[LLL:38-80,LLL:464-511] Image Pymol Jmol Links: PDB, SCOP, CATH
Hydrogenase-2 large chain ; ligands: FCO,GOL,MG,NI,OXY,SF4 ; X-RAY DIFFRACTION 1.3Å
e6syxMMM1[MMM:38-80,MMM:464-511] Image Pymol Jmol Links: PDB, SCOP, CATH
Hydrogenase-2 large chain ; ligands: FCO,GOL,MG,NI,OXY,SF4 ; X-RAY DIFFRACTION 1.3Å
e6szdLLL4[LLL:38-80,LLL:464-511] Image Pymol Jmol Links: PDB, SCOP, CATH
Hydrogenase-2 large chain ; ligands: FCO,MG,NI,SF4 ; X-RAY DIFFRACTION 1.5Å
e6szdMMM3[MMM:38-80,MMM:464-511] Image Pymol Jmol Links: PDB, SCOP, CATH
Hydrogenase-2 large chain ; ligands: FCO,MG,NI,SF4 ; X-RAY DIFFRACTION 1.5Å
e6szkLLL4[LLL:38-80,LLL:464-511] Image Pymol Jmol Links: PDB, SCOP, CATH
Hydrogenase-2 large chain ; ligands: CMO,FCO,MG,NI,SF4 ; X-RAY DIFFRACTION 1.2Å
e6szkMMM3[MMM:38-80,MMM:464-511] Image Pymol Jmol Links: PDB, SCOP, CATH
Hydrogenase-2 large chain ; ligands: CMO,FCO,MG,NI,SF4 ; X-RAY DIFFRACTION 1.2Å
e7odgL2[L:54-96,L:510-562] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Uptake hydrogenase large subunit ; ligands: F4S,MG,NFU ; X-RAY DIFFRACTION 1.62Å
e7odhL2[L:54-96,L:510-562] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
Uptake hydrogenase large subunit ; ligands: CL,F4S,MG,NFV,O ; X-RAY DIFFRACTION 1.34Å
e7t2rD3[D:43-85,D:363-410] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NiFe hydrogenase large subunit ; ligands: 3NI,FCO,SF4 ; ELECTRON MICROSCOPY
e7nemL2[L:38-80,L:464-511] Image Pymol Jmol Links: PDB, SCOP, CATH
Hydrogenase-2 large chain ; ligands: FCO,MG,NI,OXY,SF4 ; X-RAY DIFFRACTION 1.35Å
e7vxqA4[A:38-80,A:464-511] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
[NiFe]-hydrogenase 2 large subunit ; ligands: CMO,GOL,MG,NFU,SF4 ; X-RAY DIFFRACTION 1.77Å
e7t2rI1[I:43-85,I:363-410] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NiFe hydrogenase large subunit ; ligands: 3NI,FCO,SF4 ; ELECTRON MICROSCOPY
e7t30D2[D:43-85,D:363-410] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NiFe hydrogenase large subunit ; ligands: 3NI,FCO,SF4 ; ELECTRON MICROSCOPY
e7t30I1[I:43-85,I:363-410] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
NiFe hydrogenase large subunit ; ligands: 3NI,FCO,SF4 ; ELECTRON MICROSCOPY
e7nemM1[M:38-80,M:464-511] Image Pymol Jmol Links: PDB, SCOP, CATH
Hydrogenase-2 large chain ; ligands: FCO,MG,NI,OXY,SF4 ; X-RAY DIFFRACTION 1.35Å
e7vxqC4[C:38-80,C:464-511] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
[NiFe]-hydrogenase 2 large subunit ; ligands: CMO,MG,NFU,SF4 ; X-RAY DIFFRACTION 1.77Å
e8dqvA3[A:40-82,A:427-474] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hydrogenase-2, large subunit ; ligands: 3NI,F3S,FCO,MG,O ; ELECTRON MICROSCOPY
e8dqvC1[C:40-82,C:427-474] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hydrogenase-2, large subunit ; ligands: 3NI,F3S,FCO,MG,O ; ELECTRON MICROSCOPY
e7utdA4[A:40-82,A:427-474] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hydrogenase-2, large subunit ; ligands: 3NI,F3S,FCO,MG ; ELECTRON MICROSCOPY
e7utdC4[C:40-82,C:427-474] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hydrogenase-2, large subunit ; ligands: 3NI,F3S,FCO,MG ; ELECTRON MICROSCOPY
e7utdE2[E:40-82,E:427-474] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hydrogenase-2, large subunit ; ligands: 3NI,F3S,FCO,MG ; ELECTRON MICROSCOPY
e7utdG1[G:40-82,G:427-474] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hydrogenase-2, large subunit ; ligands: 3NI,F3S,FCO,MG ; ELECTRON MICROSCOPY
e7utdI3[I:40-82,I:427-474] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hydrogenase-2, large subunit ; ligands: 3NI,F3S,FCO,MG ; ELECTRON MICROSCOPY
e7utdK3[K:40-82,K:427-474] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hydrogenase-2, large subunit ; ligands: 3NI,F3S,FCO,MG ; ELECTRON MICROSCOPY
e7utdM3[M:40-82,M:427-474] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hydrogenase-2, large subunit ; ligands: 3NI,F3S,FCO,MG ; ELECTRON MICROSCOPY
e7utdO4[O:40-82,O:427-474] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hydrogenase-2, large subunit ; ligands: 3NI,F3S,FCO,MG ; ELECTRON MICROSCOPY
e7uurC3[C:40-82,C:427-474] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hydrogenase-2, large subunit ; ligands: 3NI,F3S,FCO,MG,OH ; ELECTRON MICROSCOPY
e7uurF3[F:40-82,F:427-474] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hydrogenase-2, large subunit ; ligands: 3NI,F3S,FCO,MG,OH ; ELECTRON MICROSCOPY
e7uusA2[A:40-82,A:427-474] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hydrogenase-2, large subunit ; ligands: 3NI,F3S,FCO,MG ; ELECTRON MICROSCOPY
e7uusC2[C:40-82,C:427-474] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hydrogenase-2, large subunit ; ligands: 3NI,F3S,FCO,MG ; ELECTRON MICROSCOPY
e7uusE3[E:40-82,E:427-474] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hydrogenase-2, large subunit ; ligands: 3NI,F3S,FCO,MG ; ELECTRON MICROSCOPY
e7uusG3[G:40-82,G:427-474] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hydrogenase-2, large subunit ; ligands: 3NI,F3S,FCO,MG ; ELECTRON MICROSCOPY
e7uusI3[I:40-82,I:427-474] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hydrogenase-2, large subunit ; ligands: 3NI,F3S,FCO,MG ; ELECTRON MICROSCOPY
e7uusK3[K:40-82,K:427-474] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hydrogenase-2, large subunit ; ligands: 3NI,F3S,FCO,MG ; ELECTRON MICROSCOPY
e7uusM2[M:40-82,M:427-474] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hydrogenase-2, large subunit ; ligands: 3NI,F3S,FCO,MG ; ELECTRON MICROSCOPY
e7uusO1[O:40-82,O:427-474] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Hydrogenase-2, large subunit ; ligands: 3NI,F3S,FCO,MG ; ELECTRON MICROSCOPY
e8w6xL3[L:59-101,L:462-510] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; ligands: CL,MG,MPD,NFU,OH,SF4 ; X-RAY DIFFRACTIONNEUTRON DIFFRACTION 1.042.20Å
Previous
Pseudo group of domains that do not map to PFam family profiles. Domains inside should not be considered as in one family.
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