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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

X: Viral glycoprotein ectodomain-like
H: Viral glycoprotein ectodomain-like
T: Viral glycoprotein ectodomain-like
F: Baculo_gp64

PF03273

Representatives:

e3duzA1[A:22-45,A:288-460] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MAJOR ENVELOPE GLYCOPROTEIN ; ligands: HG ; X-RAY DIFFRACTION 2.95Å

e5xeaA3[A:23-40,A:282-372,A:408-460] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Envelope glycoprotein ; ligands: NAG ; X-RAY DIFFRACTION 2.09Å

e5xeaB2[B:18-40,B:282-372,B:405-464] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Envelope glycoprotein ; ligands: NAG ; X-RAY DIFFRACTION 2.09Å

e5xeaC1[C:18-40,C:282-372,C:408-461] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Envelope glycoprotein ; ligands: NAG ; X-RAY DIFFRACTION 2.09Å

e5xebA1[A:24-45,A:305-385,A:420-472] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Envelope glycoprotein ; ligands: NAG ; X-RAY DIFFRACTION 2.49Å

e5xebB1[B:24-45,B:305-385,B:420-472] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Envelope glycoprotein ; X-RAY DIFFRACTION 2.49Å

e5xebC2[C:25-45,C:305-385,C:420-472] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Envelope glycoprotein ; X-RAY DIFFRACTION 2.49Å

e5zkxA3[A:3-25,A:278-357,A:393-445] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Envelope glycoprotein ; X-RAY DIFFRACTION 2.3Å

e5zkxB3[B:3-25,B:278-357,B:393-445] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Envelope glycoprotein ; X-RAY DIFFRACTION 2.3Å

e5zkxC2[C:3-25,C:278-357,C:393-445] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Envelope glycoprotein ; X-RAY DIFFRACTION 2.3Å

e5zl2A1[A:3-25,A:278-357,A:393-445] Image Pymol Jmol Links: PDB, SCOP, CATH

Envelope glycoprotein ; X-RAY DIFFRACTION 2.70Å

e5zl2B2[B:3-25,B:278-357,B:393-445] Image Pymol Jmol Links: PDB, SCOP, CATH

Envelope glycoprotein ; X-RAY DIFFRACTION 2.70Å

e5zl2C1[C:3-25,C:278-357,C:393-445] Image Pymol Jmol Links: PDB, SCOP, CATH

Envelope glycoprotein ; X-RAY DIFFRACTION 2.70Å

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