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
Representatives:
e3rj1F1[F:2-210] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mediator of RNA polymerase II transcription subunit 20 ; X-RAY DIFFRACTION 4.3Å
e6w1sO1[O:3-200] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mediator of RNA polymerase II transcription subunit 20 ; ELECTRON MICROSCOPY
e7lbml1[l:3-204] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mediator of RNA polymerase II transcription subunit 20 ; ELECTRON MICROSCOPY
e7emfT1[T:1-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mediator of RNA polymerase II transcription subunit 20 ; ELECTRON MICROSCOPY
e7nvrf1[f:2-204] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mediator of RNA polymerase II transcription subunit 20 ; ELECTRON MICROSCOPY
e7enjT1[T:1-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mediator of RNA polymerase II transcription subunit 20 ; ELECTRON MICROSCOPY
e7enat1[t:1-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mediator of RNA polymerase II transcription subunit 20 ; ELECTRON MICROSCOPY
e7enct1[t:1-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mediator of RNA polymerase II transcription subunit 20 ; ELECTRON MICROSCOPY
e8gxqt1[t:1-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mediator of RNA polymerase II transcription subunit 20 ; ELECTRON MICROSCOPY
e8gxst1[t:1-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mediator of RNA polymerase II transcription subunit 20 ; ELECTRON MICROSCOPY
e4gwpF1[F:2-210] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mediator of RNA polymerase II transcription subunit 20 ; X-RAY DIFFRACTION 4.2Å
e2hzmA1[A:2-210] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
RNA polymerase II mediator complex subunit 20 ; ligands: PO4 ; X-RAY DIFFRACTION 2.4Å
e3j1oM1[M:2-210] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mediator of RNA polymerase II transcription subunit 20 ; ELECTRON MICROSCOPY
e2hzsA1[A:2-209] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
RNA polymerase II mediator complex subunit 20 ; X-RAY DIFFRACTION 2.7Å
e2hzsC1[C:3-209] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
RNA polymerase II mediator complex subunit 20 ; X-RAY DIFFRACTION 2.7Å
e2hzsE1[E:2-209] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
RNA polymerase II mediator complex subunit 20 ; X-RAY DIFFRACTION 2.7Å
e2hzsG1[G:2-209] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
RNA polymerase II mediator complex subunit 20 ; X-RAY DIFFRACTION 2.7Å
e2hzmC1[C:3-209] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
RNA polymerase II mediator complex subunit 20 ; X-RAY DIFFRACTION 2.4Å
e2hzmE1[E:2-210] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
RNA polymerase II mediator complex subunit 20 ; X-RAY DIFFRACTION 2.4Å
e2hzmG1[G:2-210] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
RNA polymerase II mediator complex subunit 20 ; X-RAY DIFFRACTION 2.4Å
e3rj1M1[M:2-210] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mediator of RNA polymerase II transcription subunit 20 ; ligands: SE ; X-RAY DIFFRACTION 4.3Å
e3rj1T1[T:2-210] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mediator of RNA polymerase II transcription subunit 20 ; ligands: SE ; X-RAY DIFFRACTION 4.3Å
e4gwqF1[F:1-209] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mediator of RNA polymerase II transcription subunit 20 ; X-RAY DIFFRACTION 4.500Å
e4v1oY1[Y:2-209] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
MEDIATOR OF RNA POLYMERASE II TRANSCRIPTION SUBUNIT 20 ; ELECTRON MICROSCOPY
e5svaR1[R:2-210] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mediator of RNA polymerase II transcription subunit 20 ; ELECTRON MICROSCOPY
e5u0pT1[T:2-190] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mediator complex subunit 20 ; ELECTRON MICROSCOPY
e5u0sT1[T:2-187] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mediator complex subunit 20 ; ELECTRON MICROSCOPY
e5n9jY1[Y:2-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mediator of RNA polymerase II transcription subunit 20 ; X-RAY DIFFRACTION 3.400Å
e5oqmf1[f:2-209] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mediator of RNA polymerase II transcription subunit 20 ; ELECTRON MICROSCOPY
e8ceof1[f:2-210] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mediator of RNA polymerase II transcription subunit 20 ; ELECTRON MICROSCOPY
e7ui9t1[t:1-210] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mediator of RNA polymerase II transcription subunit 20 ; ELECTRON MICROSCOPY
e7uift1[t:1-210] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mediator of RNA polymerase II transcription subunit 20 ; ELECTRON MICROSCOPY
e7uigt1[t:1-210] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mediator of RNA polymerase II transcription subunit 20 ; ELECTRON MICROSCOPY
e7uioAt1[At:1-210] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mediator of RNA polymerase II transcription subunit 20 ; ELECTRON MICROSCOPY
e7uioBt1[Bt:1-210] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mediator of RNA polymerase II transcription subunit 20 ; ELECTRON MICROSCOPY
e8cenf1[f:2-210] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Mediator of RNA polymerase II transcription subunit 20 ; ELECTRON MICROSCOPY
Pseudo group of domains that do not map to PFam family profiles. Domains inside should not be considered as in one family.
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