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

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

X: Rossmann-like

X: C-terminal domain in CAC2185-like proteins

X: P-loop domains-like

H: P-loop domains-related

T: P-loop containing nucleoside triphosphate hydrolases

F: Cytidylate_kin

F: SulA

F: Zeta_toxin

F: Sulphotransf

F: IPT

F: Polyoma_lg_T_C

F: PIF1

F: AAA_11

F: FtsK_SpoIIIE

F: CbiA

F: PPV_E1_C

F: Sigma54_activ_2

F: KAP_NTPase

F: Helicase_C,UvrB

F: AAA,Vps4_C

F: Torsin

F: ABC_ATPase

F: Dynamin_N

F: Flavi_DEAD

F: P-loop_SecA

F: Bac_DnaA

F: P-mevalo_kinase

F: AAA,AAA_5

F: Cas_Csn2

F: RHD3_GTPase

F: RecA

F: PAXNEB

F: MFD_D3

F: AAA

F: HDA2-3

F: Fer4_NifH

F: AAA_2,AAA_5

F: Dynein_heavy

F: ORC3_N

F: Roc

F: DnaB_C

F: MMR_HSR1,YGR210-like_G4

F: AAA_11,AAA_12

F: Smg8_Smg9

F: TK

F: DNA_pol3_delta

F: AAA_7

F: AAA_8

F: DNA_pol3_chi

F: ADDB_N

F: Cas3-like_C_2

F: NACHT

F: NTPase_P4

F: ATP_bind_2

F: Sulfotransfer_3

F: AAA_22

F: AAA_9

F: Sua5_C

F: AIG1

F: SKI

F: AAA_12

F: Mg_chelatase

F: DNMK

F: PhoH

F: TrwB_AAD_bind

F: ATP-synt_ab

F: bpMoxR

F: SRP54

F: GBP,GBP_C

F: Tsr1_G-like

F: CPT

F: TsaE

F: PRK

F: TIP49

F: FTHFS

F: Parvo_NS1

F: ERCC3_RAD25_C

F: AAA_6

F: Mur_ligase_M

F: tRNA_lig_CPD,tRNA_lig_kinase

PF08302 PF08303

F: Rad51

PF08423 CL0023

F: TraI_hel_assoc_N

PF22232

F: SNF2-rel_dom,Helicase_C,SnAC

PF00176 PF00271 PF14619

F: IstB_IS21

F: RIF2_ASCE

F: DEAD

F: CoaE

F: DUF463

F: APS_kinase

F: KTI12

F: Adenylsucc_synt

F: 6PF2K

F: SNF2-rel_dom,Helicase_C

F: DUF87

F: Podovirus_Gp16

F: Gtr1_RagA

F: RuvB_N

F: Sulfotransfer_1

F: AAA_5

F: MMR_HSR1,MMR_HSR1_Xtn

F: IIGP

F: MeaB

F: SecA_DEAD

F: ArsA_ATPase

F: Kinesin

F: CENP-M

F: AAA_16,ORC5_lid

F: TerL_ATPase

F: MMR_HSR1

Representatives:

e2cxxA1[A:2-185] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

PROBABLE GTP-BINDING PROTEIN ENGB ; ligands: GDP ; X-RAY DIFFRACTION 1.7Å

e2gj8A1[A:216-376] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRNA MODIFICATION GTPASE TRME ; ligands: ALF,GDP,K,MG,SE ; X-RAY DIFFRACTION 1.7Å

e3h2yA1[A:56-232] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

GTPASE FAMILY PROTEIN ; ligands: DGI ; X-RAY DIFFRACTION 1.8Å

e1wf3A2[A:3-180] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

GTP-binding protein ; ligands: GNP,GOL,MG ; X-RAY DIFFRACTION 1.88Å

e1mkyA2[A:2-172] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Probable GTP-binding protein engA ; ligands: PO4 ; X-RAY DIFFRACTION 1.90Å

e1mkyA3[A:173-358] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Probable GTP-binding protein engA ; ligands: GDP,PO4 ; X-RAY DIFFRACTION 1.90Å

e1sviA1[A:1-195] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GTP-binding protein YSXC ; ligands: GDP ; X-RAY DIFFRACTION 1.95Å

e1puiA1[A:11-198] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

Probable GTP-binding protein engB ; ligands: SO4 ; X-RAY DIFFRACTION 2.00Å

e1pujA1[A:9-281] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

conserved hypothetical protein ylqF ; ligands: GNP,MG ; X-RAY DIFFRACTION 2.00Å

e1udxA3[A:157-336] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

THE GTP-BINDING PROTEIN OBG ; ligands: ACT,MPD ; X-RAY DIFFRACTION 2.07Å

e1jalA2[A:1-278] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

YCHF PROTEIN ; X-RAY DIFFRACTION 2.4Å

e3kxiA2[A:174-357] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GTP-binding protein (HflX) ; ligands: GDP,MG,SCN ; X-RAY DIFFRACTION 2.650Å

e1ni3A2[A:11-306] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

YchF GTP-binding protein ; ligands: SO4 ; X-RAY DIFFRACTION 2.8Å

e1jalB2[B:1-278] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

YCHF PROTEIN ; X-RAY DIFFRACTION 2.4Å

e2dbyA5[A:1-268] Image Pymol Jmol Links: PDB, SCOP, CATH

GTP-BINDING PROTEIN ; ligands: FMT,GDP ; X-RAY DIFFRACTION 1.76Å

e2dwqA5[A:1-268] Image Pymol Jmol Links: PDB, SCOP, CATH

GTP-BINDING PROTEIN ; X-RAY DIFFRACTION 2.95Å

e4csu91[9:159-337] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GTPASE OBGE/CGTA ; ELECTRON MICROSCOPY

e2dwqB1[B:2-254] Image Pymol Jmol Links: PDB, SCOP, CATH

GTP-BINDING PROTEIN ; X-RAY DIFFRACTION 2.95Å

e2ohfA1[A:16-304] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GTP-binding protein 9 ; ligands: ACP ; X-RAY DIFFRACTION 2.7Å

e5ady61[6:192-334] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GTPASE HFLX ; ligands: GNP,MG ; ELECTRON MICROSCOPY

e5m04A1[A:159-338] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GTPase ObgE/CgtA ; ligands: GDP,MG ; X-RAY DIFFRACTION 1.85Å

e2qtfA1[A:174-356] Image Pymol Jmol Links: PDB, SCOP, CATH

GTP-binding protein ; ligands: ACT,CD,SO4 ; X-RAY DIFFRACTION 2.0Å

e2qthA1[A:174-356] Image Pymol Jmol Links: PDB, SCOP, CATH

GTP-binding protein ; ligands: ACT,CD,GDP,MG ; X-RAY DIFFRACTION 2.0Å

e1lnzA2[A:158-342] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SPO0B-associated GTP-binding protein ; ligands: MG ; X-RAY DIFFRACTION 2.6Å

e1lnzB2[B:158-337] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SPO0B-associated GTP-binding protein ; ligands: G4P,MG ; X-RAY DIFFRACTION 2.6Å

e5dn8A1[A:0-157] Image Pymol Jmol Links: PDB, SCOP, CATH

GTPase Der ; ligands: GDP ; X-RAY DIFFRACTION 1.76Å

e5dn8A2[A:158-319] Image Pymol Jmol Links: PDB, SCOP, CATH

GTPase Der ; ligands: GDP ; X-RAY DIFFRACTION 1.76Å

e4dcsA3[A:3-157] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GTP-BINDING PROTEIN ENGA ; ligands: SO4 ; X-RAY DIFFRACTION 2.25Å

e4dctA3[A:3-157] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GTP-BINDING PROTEIN ENGA ; ligands: GDP,SO4 ; X-RAY DIFFRACTION 2.3Å

e4dcsA1[A:158-321] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GTP-BINDING PROTEIN ENGA ; ligands: GDP ; X-RAY DIFFRACTION 2.25Å

e4dctA2[A:158-321] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GTP-BINDING PROTEIN ENGA ; ligands: GDP ; X-RAY DIFFRACTION 2.3Å

e3kxkB2[B:178-354] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GTP-binding protein (HflX) ; X-RAY DIFFRACTION 2.350Å

e3gehA1[A:221-275,A:296-379] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRNA MODIFICATION GTPASE MNME ; ligands: GDP,ZN ; X-RAY DIFFRACTION 3.2Å

e5ucvB1[B:2-200] Image Pymol Jmol Links: PDB, SCOP, CATH

Probable GTP-binding protein EngB ; ligands: ACT,CL,GOL ; X-RAY DIFFRACTION 1.800Å

e3kxkA1[A:177-356] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GTP-binding protein (HflX) ; X-RAY DIFFRACTION 2.350Å

e3kxlA1[A:177-356] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GTP-binding protein (HflX) ; ligands: SCN ; X-RAY DIFFRACTION 2.500Å

e5x4bA1[A:2-163] Image Pymol Jmol Links: PDB, SCOP, CATH

GTPase Der ; ligands: GDP,K,MG ; X-RAY DIFFRACTION 1.500Å

e5x4bB1[B:3-163] Image Pymol Jmol Links: PDB, SCOP, CATH

GTPase Der ; ligands: GDP,K,MG,NA ; X-RAY DIFFRACTION 1.500Å

e5m7hA3[A:3-157] Image Pymol Jmol Links: PDB, SCOP, CATH

GTPase Der ; ligands: K,PO4 ; X-RAY DIFFRACTION 3.15Å

e5m7hA2[A:158-321] Image Pymol Jmol Links: PDB, SCOP, CATH

GTPase Der ; ligands: GNP ; X-RAY DIFFRACTION 3.15Å

e5mbsA1[A:3-157] Image Pymol Jmol Links: PDB, SCOP, CATH

GTPase Der ; ligands: SO4 ; X-RAY DIFFRACTION 3.20Å

e5mbsA2[A:158-321] Image Pymol Jmol Links: PDB, SCOP, CATH

GTPase Der ; ligands: GDP ; X-RAY DIFFRACTION 3.20Å

e6g0zB1[B:2-293] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ribosome biogenesis GTPase A ; ligands: GDP ; X-RAY DIFFRACTION 2.15Å

e6g12A1[A:2-294] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ribosome biogenesis GTPase A ; ligands: GNP ; X-RAY DIFFRACTION 1.929Å

e6g12B1[B:2-293] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ribosome biogenesis GTPase A ; ligands: GNP ; X-RAY DIFFRACTION 1.929Å

e6g14B1[B:2-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ribosome biogenesis GTPase A ; ligands: G4P ; X-RAY DIFFRACTION 1.8Å

e6g14A1[A:2-289] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ribosome biogenesis GTPase A ; ligands: G4P ; X-RAY DIFFRACTION 1.8Å

e6g15A1[A:2-293] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ribosome biogenesis GTPase A ; ligands: C1Z ; X-RAY DIFFRACTION 1.65Å

e6g15B1[B:2-293] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ribosome biogenesis GTPase A ; ligands: C1Z ; X-RAY DIFFRACTION 1.65Å

e6n8nW1[W:117-273,W:305-524] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI