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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

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: mRNA triphosphatase CET1-related
H: mRNA triphosphatase CET1-related
T: mRNA triphosphatase CET1-related
F: Med20

PF08612 CL0273

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

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.

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