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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

X: beta-propeller-like
H: beta-propeller
T: 7-bladed
F: CPSF_A

PF03178 CL0186

Representatives:

e5gm6F2[F:852-890,F:918-1231] * nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pre-mRNA-splicing factor RSE1 ; ELECTRON MICROSCOPY

e5hy7A1[A:424-461,A:785-1128] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putative pre-mRNA splicing protein ; ligands: CA ; X-RAY DIFFRACTION 2.9Å

e5hy7B1[B:424-461,B:785-1128] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putative pre-mRNA splicing protein ; ligands: CA ; X-RAY DIFFRACTION 2.9Å

e5lqwX2[X:852-890,X:925-1231] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pre-mRNA-splicing factor RSE1 ; ELECTRON MICROSCOPY

e5nrlP3[P:852-890,P:918-1231] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pre-mRNA-splicing factor RSE1 ; ELECTRON MICROSCOPY

e6eojA1[A:899-1262] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Protein CFT1 ; ELECTRON MICROSCOPY

e6bllA2[A:460-518,A:984-1352] Image Pymol Jmol Links: PDB, SCOP, CATH

e6blyA2[A:460-518,A:984-1352] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cleavage and polyadenylation specificity factor subunit 1 ; ELECTRON MICROSCOPY

e6bm0A2[A:460-518,A:984-1352] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cleavage and polyadenylation specificity factor subunit 1 ; ELECTRON MICROSCOPY

e6f9nA1[A:458-518,A:1004-1350] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cleavage and polyadenylation specificity factor subunit 1 ; X-RAY DIFFRACTION 2.50Å

e6fbsA2[A:458-518,A:1004-1350] Image Pymol Jmol Links: PDB, SCOP, CATH

e6fuwA4[A:458-518,A:1004-1350] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cleavage and polyadenylation specificity factor subunit 1 ; ELECTRON MICROSCOPY

e5zwm31[3:852-890,3:918-1231] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pre-mRNA-splicing factor RSE1 ; ELECTRON MICROSCOPY

e6g90P4[P:852-890,P:918-1231] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pre-mRNA-splicing factor RSE1 ; ELECTRON MICROSCOPY

e6dnhA2[A:459-518,A:984-1352] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cleavage and polyadenylation specificity factor subunit 1 ; ELECTRON MICROSCOPY

e5zwo33[3:852-890,3:918-1231] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pre-mRNA-splicing factor RSE1 ; ELECTRON MICROSCOPY

e6urgA2[A:458-518,A:984-1352] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cleavage and polyadenylation specificity factor subunit 1 ; ELECTRON MICROSCOPY

e6uroA4[A:459-518,A:1004-1350] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cleavage and polyadenylation specificity factor subunit 1 ; ELECTRON MICROSCOPY

e7dco32[3:852-890,3:918-1231] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RSE1 isoform 1 ; ligands: MG ; ELECTRON MICROSCOPY

e7oqbP2[P:484-517,P:846-890,P:918-1232] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pre-mRNA-splicing factor RSE1 ; ELECTRON MICROSCOPY

e7oqeP2[P:484-517,P:846-890,P:918-1232] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pre-mRNA-splicing factor RSE1 ; ELECTRON MICROSCOPY

e7opcd2[d:685-1044] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA damage-binding protein 1 ; ELECTRON MICROSCOPY

e7opdd2[d:685-1044] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DNA damage-binding protein 1 ; ELECTRON MICROSCOPY

e8e3iA3[A:459-518,A:984-1352] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cleavage and polyadenylation specificity factor subunit 1 ; ELECTRON MICROSCOPY

e8e3qA3[A:459-518,A:984-1352] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cleavage and polyadenylation specificity factor subunit 1 ; 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.

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