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X - Possible homology level

H - Homology level

T - Topology level

F - Family level

* - Provisional representative


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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

X: Alpha-beta plaits
H: EF-G C-terminal domain-like
T: EF-G C-terminal domain-like
F: EFG_III

PF14492 CL0437

Representatives:

e2dy1A2[A:378-454] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

ELONGATION FACTOR G ; X-RAY DIFFRACTION 1.6Å

e1n0uA2[A:482-560] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Elongation factor 2 ; ligands: SO1 ; X-RAY DIFFRACTION 2.12Å

e7lmxA1[A:0-74] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin inhibitor ; X-RAY DIFFRACTION 1.8Å

e1zm9A2[A:482-560] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ELONGATION FACTOR 2 ; X-RAY DIFFRACTION 2.8Å

e2p8wT2[T:482-560] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Elongation factor 2 ; ELECTRON MICROSCOPY

e7lmxB1[B:1-73] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin inhibitor ; X-RAY DIFFRACTION 1.8Å

e2p8zT2[T:482-560] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Elongation factor 2 ; ligands: SO1 ; ELECTRON MICROSCOPY

e7lmxC1[C:1-74] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Integrin inhibitor ; X-RAY DIFFRACTION 1.8Å

e3cb4E6[E:291-371] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GTP-BINDING PROTEIN LEPA ; X-RAY DIFFRACTION 2.8Å

e2p8yT2[T:482-560] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Elongation factor 2 ; ligands: SO1 ; ELECTRON MICROSCOPY

e1zm4E2[E:482-560] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ELONGATION FACTOR 2 ; X-RAY DIFFRACTION 2.9Å

e3cb4A1[A:287-367] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GTP-BINDING PROTEIN LEPA ; X-RAY DIFFRACTION 2.8Å

e1n0vD2[D:482-560] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Elongation factor 2 ; X-RAY DIFFRACTION 2.85Å

e3cb4B1[B:287-367] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GTP-BINDING PROTEIN LEPA ; X-RAY DIFFRACTION 2.8Å

e1zm3C2[C:482-560] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ELONGATION FACTOR 2 ; X-RAY DIFFRACTION 3.07Å

e3cb4C1[C:287-367] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GTP-BINDING PROTEIN LEPA ; X-RAY DIFFRACTION 2.8Å

e1zm2A2[A:482-560] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ELONGATION FACTOR 2 ; X-RAY DIFFRACTION 3.07Å

e3cb4F1[F:287-367] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GTP-BINDING PROTEIN LEPA ; X-RAY DIFFRACTION 2.8Å

e2p8xT2[T:482-560] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Elongation factor 2 ; ELECTRON MICROSCOPY

e3degC2[C:287-367] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GTP-binding protein lepA ; ELECTRON MICROSCOPY

e1zm3E2[E:482-560] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ELONGATION FACTOR 2 ; X-RAY DIFFRACTION 3.07Å

e5ganC4[C:596-674] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pre-mRNA-splicing factor SNU114 ; ELECTRON MICROSCOPY

e5gamC1[C:596-674] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pre-mRNA-splicing factor SNU114 ; ELECTRON MICROSCOPY

e1zm4A2[A:482-560] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ELONGATION FACTOR 2 ; X-RAY DIFFRACTION 2.9Å

e2npfA2[A:482-560] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Elongation factor 2 ; ligands: MOU ; X-RAY DIFFRACTION 2.9Å

e3jcmH4[H:590-674] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pre-mRNA-splicing factor SNU114 ; ELECTRON MICROSCOPY

e1u2rA2[A:482-560] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ELONGATION FACTOR 2 ; ligands: SO1 ; X-RAY DIFFRACTION 2.6Å

e5gm6C3[C:588-676] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pre-mRNA-splicing factor SNU114 ; ELECTRON MICROSCOPY

e5lj5C5[C:594-693] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pre-mRNA-splicing factor SNU114 ; ELECTRON MICROSCOPY

e1zm2E2[E:482-560] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ELONGATION FACTOR 2 ; X-RAY DIFFRACTION 3.07Å

e1zm2C2[C:482-560] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ELONGATION FACTOR 2 ; X-RAY DIFFRACTION 3.07Å

e5wsgC3[C:588-674] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pre-mRNA-splicing factor SNU114 ; ELECTRON MICROSCOPY

e2npfB2[B:482-560] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Elongation factor 2 ; ligands: MOU ; X-RAY DIFFRACTION 2.9Å

e5nrlC3[C:594-693] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pre-mRNA-splicing factor SNU114 ; ELECTRON MICROSCOPY

e1zm9E2[E:482-560] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ELONGATION FACTOR 2 ; X-RAY DIFFRACTION 2.8Å

e5mpsC1[C:594-693] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pre-mRNA-splicing factor SNU114 ; ELECTRON MICROSCOPY

e5mq0C3[C:594-693] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pre-mRNA-splicing factor SNU114 ; ELECTRON MICROSCOPY

e1zm4C2[C:482-560] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ELONGATION FACTOR 2 ; X-RAY DIFFRACTION 2.9Å

e3cb4D1[D:287-367] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GTP-BINDING PROTEIN LEPA ; X-RAY DIFFRACTION 2.8Å

e1zm9C2[C:482-560] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ELONGATION FACTOR 2 ; X-RAY DIFFRACTION 2.8Å

e2e1rA2[A:482-560] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Elongation factor 2 ; ligands: SOD ; X-RAY DIFFRACTION 3.15Å

e1zm3A2[A:482-560] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ELONGATION FACTOR 2 ; X-RAY DIFFRACTION 3.07Å

e1n0vC2[C:482-560] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Elongation factor 2 ; X-RAY DIFFRACTION 2.85Å

e3j3az4[z:498-576] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB

e2yweA3[A:291-373] Image Pymol Jmol Links: PDB, SCOP, CATH

GTP-binding protein lepA ; X-RAY DIFFRACTION 2.05Å

e2ywgA3[A:291-373] Image Pymol Jmol Links: PDB, SCOP, CATH

GTP-binding protein LepA ; X-RAY DIFFRACTION 2.94Å

e2ywhA3[A:291-373] Image Pymol Jmol Links: PDB, SCOP, CATH

GTP-binding protein LepA ; X-RAY DIFFRACTION 2.24Å

e3j38z8[z:466-544] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB

e3b78C14[C:464-542] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Elongation factor 2 ; X-RAY DIFFRACTION 2.500Å

e3b8hA14[A:464-542] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Elongation factor 2 ; X-RAY DIFFRACTION 2.500Å

e3b82A14[A:464-542] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Elongation factor 2 ; X-RAY DIFFRACTION 2.350Å

e3b82C14[C:464-542] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Elongation factor 2 ; X-RAY DIFFRACTION 2.350Å

e2zitA14[A:464-542] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Elongation factor 2 ; X-RAY DIFFRACTION 3.000Å

e1s1hT9[T:464-542] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB

e3b82E14[E:464-542] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Elongation factor 2 ; X-RAY DIFFRACTION 2.350Å

e3b8hC14[C:464-542] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Elongation factor 2 ; X-RAY DIFFRACTION 2.500Å

e3b8hE14[E:464-542] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Elongation factor 2 ; X-RAY DIFFRACTION 2.500Å

e2zitC14[C:464-542] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Elongation factor 2 ; X-RAY DIFFRACTION 3.000Å

e2zitE14[E:464-542] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Elongation factor 2 ; X-RAY DIFFRACTION 3.000Å

e1vx441[4:498-576] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB

e4w2241[4:498-576] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB

e4qjty4[y:293-373] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB

e4w2ey1[y:293-373] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

50S ribosomal protein L9, Elongation factor 4 ; X-RAY DIFFRACTION 2.890Å

e3j7p41[4:498-576] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Eukaryotic elongation factor 2 ; ELECTRON MICROSCOPY

e4v4bAT1[AT:482-560] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Elongation factor 2 ; ELECTRON MICROSCOPY

e4v6wAz5[Az:466-544] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Elongation factor 2 ; ELECTRON MICROSCOPY

e4v6xAz1[Az:498-576] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Elongation factor 2 ; ELECTRON MICROSCOPY

e3jb9B2[B:595-673] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pre-mRNA-splicing factor cwf10 ; ELECTRON MICROSCOPY

e3jcrB2[B:581-659] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

hSnu114 ; ELECTRON MICROSCOPY

e5it713[1:482-560] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Eft2p ; ELECTRON MICROSCOPY

e5imqB3[B:293-373] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Elongation factor 4 ; ELECTRON MICROSCOPY

e5imrC4[C:293-373] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Elongation factor 4 ; ELECTRON MICROSCOPY

e5j8bz4[z:293-373] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GDPCP fused to the N-terminus of the ribosomal protein L9,Elongation factor 4 ; X-RAY DIFFRACTION 2.590Å

e5juoDC4[DC:482-560] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

yeast eEF2 ; ligands: SO1 ; ELECTRON MICROSCOPY

e5jupDC2[DC:482-560] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

yeast eEF2 ; ligands: SO1 ; ELECTRON MICROSCOPY

e5jusDC4[DC:482-560] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

yeast eEF2 ; ligands: SO1 ; ELECTRON MICROSCOPY

e5jutDC4[DC:482-560] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

yeast eEF2 ; ligands: SO1 ; ELECTRON MICROSCOPY

e5juuDC3[DC:482-560] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

yeast eEF2 ; ligands: SO1 ; ELECTRON MICROSCOPY

e5o9zB1[B:581-659] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

116 kDa U5 small nuclear ribonucleoprotein component ; ELECTRON MICROSCOPY

e2ywfA3[A:293-373] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

GTP-binding protein lepA ; X-RAY DIFFRACTION 2.24Å

e2bv3A2[A:404-415,A:435-478] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ELONGATION FACTOR G ; X-RAY DIFFRACTION 2.500Å

e1fnmA2[A:404-482] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ELONGATION FACTOR G ; X-RAY DIFFRACTION 2.8Å

e3zztA5[A:404-481] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ELONGATION FACTOR G ; X-RAY DIFFRACTION 2.95Å

e5h7lA3[A:387-468] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Elongation factor 2 ; X-RAY DIFFRACTION 3.09Å

e5anbK3[K:610-691] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ELONGATION FACTOR TU GTP-BINDING DOMAIN-CONTAINING PROTEIN 1 ; ELECTRON MICROSCOPY

F: Unmapped domains

Pseudo group of domains that do not map to PFam family profiles. Domains inside should not be considered as in one family.

X: LuxS, MPP, ThrRS/AlaRS common domain

looks like an elaborated ferredoxin

X: ClpS-like

contains a HTH motif

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