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X - Possible homology level

H - Homology level

T - Topology level

F - Family level

* - Provisional representative

Keyword search

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

X: S2 subunit of coronavirus spike glycoprotein
H: S2 subunit of coronavirus spike glycoprotein
T: S2 subunit of coronavirus spike glycoprotein
F: CoV_S2

PF01601 CL0595

Representatives:

e3jclA4[A:731-1118] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ELECTRON MICROSCOPY

e5szsA5[A:750-1224] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ligands: MAN,NAG ; ELECTRON MICROSCOPY

e5w9hA1[A:753-1223] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MERS S ; ligands: NAG ; ELECTRON MICROSCOPY

e6b7nA4[A:558-1017] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike protein ; ligands: NAG ; ELECTRON MICROSCOPY

e7n9tA1[A:703-1147] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

Spike glycoprotein ; ELECTRON MICROSCOPY

e7eh5A1[A:701-827,A:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ELECTRON MICROSCOPY

e7eh5B1[B:701-827,B:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ELECTRON MICROSCOPY

e7eh5C1[C:701-827,C:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ELECTRON MICROSCOPY

e7fg2A1[A:701-1138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ELECTRON MICROSCOPY

e7fg3A1[A:701-1138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ELECTRON MICROSCOPY

e7k9hB1[B:703-827,B:856-1147] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ELECTRON MICROSCOPY

e7mtdA1[A:701-827,A:855-1143] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY

e7n9bC1[C:795-919,C:947-1239] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

Spike glycoprotein ; ELECTRON MICROSCOPY

e7n9cA1[A:793-919,A:945-1240] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

Spike glycoprotein ; ELECTRON MICROSCOPY

e7n9cC1[C:793-919,C:948-1239] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

Spike glycoprotein ; ELECTRON MICROSCOPY

e7n9tB1[B:703-1147] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

Spike glycoprotein ; ELECTRON MICROSCOPY

e7n9tC1[C:703-1147] Image Pymol Jmol Links: PDB, SCOP, CATHDOI

Spike glycoprotein ; ELECTRON MICROSCOPY

e7oanA1[A:701-827,A:854-1147] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY

e7oanB1[B:701-827,B:854-1147] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY

e7oanC1[C:701-827,C:854-1147] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY

e7r8mC1[C:703-827,C:853-1146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY

e7rw2A1[A:699-829,A:856-1145] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY

e7rw2B1[B:699-829,B:856-1145] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY

e7rw2C1[C:699-829,C:856-1145] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY

e7faeB1[B:701-826,B:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY

e7faeC1[C:701-826,C:854-1146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY

e7fafA1[A:701-826,A:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ELECTRON MICROSCOPY

e7fafB1[B:701-826,B:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ELECTRON MICROSCOPY

e7fafC1[C:701-826,C:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ELECTRON MICROSCOPY

e7n5hC1[C:701-827,C:855-1147] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY

e7q6eA1[A:698-824,A:852-1144] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY

e7q6eC1[C:700-824,C:852-1144] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY

e7q9fA1[A:698-824,A:852-1144] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY

e7q9gB1[B:698-824,B:852-1144] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY

e7q9gA1[A:698-824,A:852-1144] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY

e7q9iA1[A:698-824,A:852-1144] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY

e7q9pB1[B:698-824,B:852-1144] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY

e7q9pA1[A:698-824,A:852-1144] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY

e7s0cA1[A:703-828,A:853-1146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY

e7s0dB1[B:701-828,B:853-1146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ELECTRON MICROSCOPY

e7sg4A1[A:683-1129] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY

e7sg4B1[B:683-1129] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY

e7sg4C1[C:683-1129] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY

e7sn3B1[B:703-827,B:854-1147] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY

e7v76A1[A:698-824,A:852-1143] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v76B1[B:698-825,B:851-1143] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v76C1[C:698-824,C:851-1143] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v77A1[A:698-824,A:852-1143] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v77B1[B:698-825,B:851-1143] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v77C1[C:698-824,C:852-1143] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v78A1[A:701-827,A:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v78B1[B:701-828,B:854-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v78C1[C:701-827,C:854-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v79A1[A:701-827,A:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v79B1[B:701-828,B:854-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v79C1[C:701-827,C:854-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7aA1[A:701-827,A:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7aC1[C:701-827,C:854-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7aB1[B:701-827,B:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7dA1[A:701-827,A:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7dB1[B:701-827,B:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7dC1[C:701-827,C:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7eA1[A:701-827,A:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7eB1[B:701-827,B:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7eC1[C:701-827,C:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7fA1[A:701-827,A:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7fB1[B:701-827,B:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7fC1[C:701-827,C:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7gA1[A:701-827,A:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7gB1[B:701-827,B:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7gC1[C:701-827,C:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7hA1[A:701-827,A:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7hB1[B:701-827,B:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7hC1[C:701-827,C:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7hD1[D:701-827,D:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7hE1[E:701-827,E:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7hF1[F:701-827,F:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7iA1[A:701-827,A:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7iB1[B:701-827,B:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7iC1[C:701-827,C:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7iD1[D:701-827,D:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7iE1[E:701-827,E:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7iF1[F:701-827,F:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7jA1[A:701-827,A:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7jB1[B:701-827,B:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7jC1[C:701-827,C:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7jD1[D:701-827,D:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7jE1[E:701-827,E:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7jF1[F:701-827,F:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7vB1[B:699-826,B:852-1144] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7zA1[A:698-824,A:852-1143] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7zB1[B:698-824,B:852-1143] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v7zC1[C:698-824,C:852-1143] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v81A1[A:701-827,A:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY

e7v81C1[C:701-827,C:854-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY

e7v81B1[B:701-827,B:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ligands: NAG ; ELECTRON MICROSCOPY

e7v82A1[A:701-827,A:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v82B1[B:701-827,B:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v82C1[C:701-827,C:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v83A1[A:701-827,A:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v83B1[B:701-827,B:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v83C1[C:701-827,C:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v85A1[A:701-827,A:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v85B1[B:701-827,B:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v85C1[C:701-827,C:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v86A1[A:701-827,A:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v86B1[B:701-827,B:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v86C1[C:701-827,C:855-1146] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v8cA1[A:698-824,A:852-1143] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

e7v8cC1[C:698-824,C:851-1143] Image Pymol Jmol Links: PDB, SCOP, CATH

Spike glycoprotein ; ELECTRON MICROSCOPY

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