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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

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

X: 26S proteasome regulatory subunits C-terminal helices
H: 26S proteasome regulatory subunit RPN9 C-terminal helix
T: 26S proteasome regulatory subunit RPN9 C-terminal helix
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:

e4d10J3[J:403-443] * nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

COP9 SIGNALOSOME COMPLEX SUBUNIT 2 ; X-RAY DIFFRACTION 3.80Å

e5gjqO1[O:340-376] * nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e5l4kO3[O:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e5gjrO1[O:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e5gjr21[2:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e5t0ga1[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e5t0ha1[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e5t0ia3[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e5t0ja3[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e5t0cAa1[Aa:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e5t0cBa3[Ba:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e5ln3O1[O:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e5vgza2[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e5vhfa3[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e5vhha1[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e5vhia2[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e5vhsa3[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e6epcO1[O:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e6epdO1[O:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e6epeO1[O:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e6epfO1[O:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e5vfpa3[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e5vfta3[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Proteasome (Prosome, macropain) 26S subunit, non-ATPase, 13, isoform CRA_a ; ELECTRON MICROSCOPY

e5vfua3[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e5vfqa2[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e5vfra1[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e5vfsa3[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e6msea3[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e6msga1[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e6msha3[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e6msja2[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e6mska1[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e6msba2[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e6msda1[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e6wjda3[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e6wjna1[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e7w37a3[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e7w38a3[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e7w39a2[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e7w3aa2[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e7w3ba3[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e7w3ca2[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e7w3fa1[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e7w3ga3[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e7w3ha1[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e7w3ia1[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e7w3ja3[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e7w3ka2[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e7w3ma2[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e8cvta1[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e7qxna3[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e7qxpa1[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e7qxua2[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e7qxwa2[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e7qxxa1[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e7qy7a3[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e7qyaa2[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY

e7qyba2[a:340-376] Image Pymol Jmol Links: PDB, SCOP, CATH

26S proteasome non-ATPase regulatory subunit 13 ; ELECTRON MICROSCOPY