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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

X: Putative tailspike protein Orf210 N-terminal domain
H: Putative tailspike protein Orf210 N-terminal domain
T: tailspike protein Orf211 N-terminal domain
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.

Representatives:

e5w6pF1[F:243-330] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

tailspike protein 2 ; ligands: ZN ; X-RAY DIFFRACTION 2.33Å

e5w6pA3[A:246-330] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

tailspike protein 2 ; ligands: ZN ; X-RAY DIFFRACTION 2.33Å

e5w6pB3[B:246-330] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

tailspike protein 2 ; X-RAY DIFFRACTION 2.33Å

e5w6pC3[C:246-330] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

tailspike protein 2 ; ligands: ZN ; X-RAY DIFFRACTION 2.33Å

e5w6pD3[D:245-330] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

tailspike protein 2 ; ligands: ZN ; X-RAY DIFFRACTION 2.33Å

e5w6pE3[E:246-330] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

tailspike protein 2 ; ligands: ZN ; X-RAY DIFFRACTION 2.33Å

e5w6sA3[A:246-330] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

tailspike protein 2 ; ligands: CL,NA ; X-RAY DIFFRACTION 2.26Å

e6c72A2[A:204-270] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

Particle-associated glycoside hydrolase ; X-RAY DIFFRACTION 2.396Å

e5w5pA1[A:10-97] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

Tail fiber protein ; ligands: ZN ; X-RAY DIFFRACTION 2.429Å

e6e1rA1[A:206-270] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

Tailspike protein ; X-RAY DIFFRACTION 2.69Å

X: Glycosyl hydrolase domain-like

some similarity with Ig fold

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

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