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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: Viral DNA-binding domain
T: Viral DNA-binding domain
F: PPV_E2_C

PF00511

Representatives:

e2bopA1[A:326-410] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (E2) ; ligands: YB ; X-RAY DIFFRACTION 1.700Å

e1jjhC1[C:326-410] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

REGULATORY PROTEIN E2 ; X-RAY DIFFRACTION 2.5Å

e1dbdB1[B:16-100] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

REGULATORY PROTEIN E2 ; SOLUTION NMR

e1jjhB1[B:326-410] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

REGULATORY PROTEIN E2 ; X-RAY DIFFRACTION 2.5Å

e1dbdA1[A:16-100] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

REGULATORY PROTEIN E2 ; SOLUTION NMR

e1jjhA1[A:326-410] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

REGULATORY PROTEIN E2 ; X-RAY DIFFRACTION 2.5Å

e2q79A1[A:284-362] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

REGULATORY PROTEIN E2 ; ligands: SO4 ; X-RAY DIFFRACTION 1.8Å

e1f9fC1[C:284-365] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Regulatory protein E2 ; ligands: SO4 ; X-RAY DIFFRACTION

e1r8hE1[E:281-366] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

REGULATORY PROTEIN E2 ; ligands: PO4 ; X-RAY DIFFRACTION 1.9Å

e1r8pA1[A:1-81] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Regulatory protein E2 ; SOLUTION NMR

e2ayeA1[A:282-366] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Regulatory protein E2 ; ligands: GOL,SO4 ; X-RAY DIFFRACTION 2.30Å

e1dhmA1[A:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

E2 PROTEIN ; SOLUTION NMR

e1jj4A1[A:286-364] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Regulatory protein E2 ; X-RAY DIFFRACTION 2.3Å

e2ayeB1[B:281-366] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Regulatory protein E2 ; ligands: GOL,SO4 ; X-RAY DIFFRACTION 2.30Å

e1r8hD1[D:281-366] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

REGULATORY PROTEIN E2 ; ligands: PO4 ; X-RAY DIFFRACTION 1.9Å

e1jj4B1[B:285-364] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Regulatory protein E2 ; X-RAY DIFFRACTION 2.3Å

e2ayeE1[E:281-366] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Regulatory protein E2 ; ligands: GOL,SO4 ; X-RAY DIFFRACTION 2.30Å

e2aybB1[B:281-366] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Regulatory protein E2 ; X-RAY DIFFRACTION 3.2Å

e2aybA1[A:281-366] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Regulatory protein E2 ; X-RAY DIFFRACTION 3.2Å

e1a7gE1[E:291-372] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

REGULATORY PROTEIN E2 ; ligands: SO4 ; X-RAY DIFFRACTION 2.4Å

e1f9fD1[D:284-365] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Regulatory protein E2 ; ligands: SO4 ; X-RAY DIFFRACTION

e2ayeC1[C:281-366] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Regulatory protein E2 ; ligands: GOL,SO4 ; X-RAY DIFFRACTION 2.30Å

e2aygB1[B:281-366] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

REGULATORY PROTEIN E2 ; X-RAY DIFFRACTION 3.1Å

e1f9fB1[B:284-365] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Regulatory protein E2 ; X-RAY DIFFRACTION

e1dhmB1[B:1-83] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

E2 PROTEIN ; SOLUTION NMR

e1zzfB1[B:2-80] Image Pymol Jmol Links: PDB, SCOP, CATH

Regulatory protein E2 ; SOLUTION NMR

e1by9A1[A:283-362] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

REGULATORY PROTEIN E2 ; X-RAY DIFFRACTION 2.2Å

e2aygA1[A:281-366] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

REGULATORY PROTEIN E2 ; X-RAY DIFFRACTION 3.1Å

e1f9fA1[A:285-365] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Regulatory protein E2 ; X-RAY DIFFRACTION

e2ayeF1[F:282-366] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Regulatory protein E2 ; ligands: GOL,SO4 ; X-RAY DIFFRACTION 2.30Å

e1r8hB1[B:281-366] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

REGULATORY PROTEIN E2 ; ligands: PO4 ; X-RAY DIFFRACTION 1.9Å

e2ayeD1[D:281-366] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Regulatory protein E2 ; ligands: GOL,SO4 ; X-RAY DIFFRACTION 2.30Å

e1zzfA1[A:2-80] Image Pymol Jmol Links: PDB, SCOP, CATH

Regulatory protein E2 ; SOLUTION NMR

e1r8pB1[B:1-81] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Regulatory protein E2 ; SOLUTION NMR

e1r8hF1[F:281-366] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

REGULATORY PROTEIN E2 ; ligands: PO4 ; X-RAY DIFFRACTION 1.9Å

e1r8hC1[C:281-366] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

REGULATORY PROTEIN E2 ; ligands: PO4 ; X-RAY DIFFRACTION 1.9Å

e3mi7X1[X:284-365] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Regulatory protein E2 ; ligands: EDO ; X-RAY DIFFRACTION 2.2Å

e6bus31[3:316-410] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Regulatory protein E2 ; X-RAY DIFFRACTION 1.9Å

e6bus11[1:319-410] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Regulatory protein E2 ; X-RAY DIFFRACTION 1.9Å

e6bus21[2:319-410] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Regulatory protein E2 ; X-RAY DIFFRACTION 1.9Å

e6bus41[4:319-410] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Regulatory protein E2 ; X-RAY DIFFRACTION 1.9Å

e1r8hA1[A:281-366] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

REGULATORY PROTEIN E2 ; ligands: PO4 ; X-RAY DIFFRACTION 1.9Å

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