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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

X: Repetitive alpha hairpins
H: ARM repeat
T: ARM repeat
F: PSD13_N

PF22037

Representatives:

e4c0vO2[O:1-278] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB

e5gjqO3[O:3-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e4cr2O1[O:1-278] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S PROTEASOME REGULATORY SUBUNIT RPN9 ; ELECTRON MICROSCOPY

e4cr3O1[O:1-278] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S PROTEASOME REGULATORY SUBUNIT RPN9 ; ELECTRON MICROSCOPY

e4cr4O1[O:1-278] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S PROTEASOME REGULATORY SUBUNIT RPN9 ; ELECTRON MICROSCOPY

e4b4tO2[O:1-278] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB

e2mr3A1[A:1-278] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN9 ; SOLUTION NMR

e2mriA2[A:181-273] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN9 ; SOLUTION NMR

e2mqwA1[A:1-160] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN9 ; SOLUTION NMR

e5a5bO2[O:1-278] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S PROTEASOME REGULATORY SUBUNIT RPN9 ; ELECTRON MICROSCOPY

e3jckF3[F:6-278] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN9 ; ELECTRON MICROSCOPY

e3jcoO2[O:1-278] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN9 ; ELECTRON MICROSCOPY

e3jcpO1[O:1-278] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN9 ; ELECTRON MICROSCOPY

e5l4kO2[O:1-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e5gjrO2[O:3-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e5gjr23[2:3-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e5t0ga3[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e5t0ha2[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e5t0ia2[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e5t0ja2[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e5t0cAa2[Aa:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e5t0cBa1[Ba:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e5mpdO2[O:6-278] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN9 ; ELECTRON MICROSCOPY

e5mpeO3[O:6-278] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN9 ; ELECTRON MICROSCOPY

e5mpbO3[O:6-278] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN9 ; ELECTRON MICROSCOPY

e5mpcO1[O:6-278] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN9 ; ELECTRON MICROSCOPY

e5wviO2[O:1-278] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN9 ; ELECTRON MICROSCOPY

e5wvkO2[O:1-278] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN9 ; ELECTRON MICROSCOPY

e5ln3O2[O:1-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e5vgza1[a:3-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e5vhfa2[a:3-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e5vhha3[a:3-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e5vhia3[a:3-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e5vhsa2[a:3-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e6epcO3[O:1-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e6epdO2[O:1-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e6epeO3[O:1-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e6epfO2[O:1-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e6fvtO2[O:6-278] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN9 ; ELECTRON MICROSCOPY

e6fvwO3[O:6-278] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN9 ; ELECTRON MICROSCOPY

e5vfpa2[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e5vfta2[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e5vfua2[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e5vfqa1[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e5vfra3[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e5vfsa1[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e6fvuO2[O:6-278] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN9 ; ELECTRON MICROSCOPY

e6fvvO2[O:6-278] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN9 ; ELECTRON MICROSCOPY

e6fvxO3[O:6-278] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN9 ; ELECTRON MICROSCOPY

e6fvyO2[O:6-278] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN9 ; ELECTRON MICROSCOPY

e6msea1[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e6msga2[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e6msha2[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e6msja3[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e6mska3[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e6msba3[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e6msda2[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e6j2cO1[O:1-278] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN9 ; ELECTRON MICROSCOPY

e6j2qO2[O:1-278] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN9 ; ELECTRON MICROSCOPY

e6j2xO3[O:1-278] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN9 ; ELECTRON MICROSCOPY

e6j2nO2[O:1-278] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN9 ; ELECTRON MICROSCOPY

e6j30O1[O:1-278] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN9 ; ELECTRON MICROSCOPY

e6wjda1[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e6wjna2[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e7qo5O2[O:6-278] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN9 ; ELECTRON MICROSCOPY

e7w37a2[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e7w38a2[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e7w39a1[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e7w3aa1[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e7w3ba1[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e7w3ca1[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e7w3fa3[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e7w3ga1[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e7w3ha2[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e7w3ia3[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e7w3ja2[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e7w3ka3[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e7w3ma3[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e7qo3O3[O:6-278] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN9 ; ELECTRON MICROSCOPY

e7qo6O2[O:6-278] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN9 ; ELECTRON MICROSCOPY

e8amzO2[O:1-268] Image Pymol Jmol Links: PDB, SCOP, CATH

PCI domain-containing protein ; ELECTRON MICROSCOPY

e8cvta2[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

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

e7qxna1[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH

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

e7qxpa3[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH

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

e7qxua3[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH

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

e7qxwa1[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH

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

e7qxxa2[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH

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

e7qy7a1[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH

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

e7qyaa1[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH

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

e7qyba3[a:4-259] Image Pymol Jmol Links: PDB, SCOP, CATH

26S proteasome non-ATPase regulatory subunit 13 ; 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.

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