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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

X: 26S proteasome subunit Rpn2 C-terminal domain
H: 26S proteasome subunit Rpn2 C-terminal domain
T: 26S proteasome subunit Rpn2 C-terminal domain
F: RPN2_C

PF18004

Representatives:

e4adyA3[A:756-925] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S PROTEASOME REGULATORY SUBUNIT RPN2 ; X-RAY DIFFRACTION 2.70Å

e5gjqN2[N:786-816,N:878-939] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e4adyB3[B:756-789,B:856-925] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S PROTEASOME REGULATORY SUBUNIT RPN2 ; X-RAY DIFFRACTION 2.70Å

e4cr2N1[N:755-787,N:860-925] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S PROTEASOME REGULATORY SUBUNIT RPN2 ; ELECTRON MICROSCOPY

e4cr3N1[N:755-787,N:860-925] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S PROTEASOME REGULATORY SUBUNIT RPN2 ; ELECTRON MICROSCOPY

e4cr4N1[N:755-787,N:860-925] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S PROTEASOME REGULATORY SUBUNIT RPN2 ; ELECTRON MICROSCOPY

e4b4tN2[N:755-787,N:860-925] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB

e4c0vN4[N:755-787,N:860-926] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB

e5a5bN3[N:755-787,N:860-925] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S PROTEASOME REGULATORY SUBUNIT RPN2 ; ELECTRON MICROSCOPY

e3jcoN3[N:756-787,N:860-925] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN2 ; ELECTRON MICROSCOPY

e3jcpN2[N:756-787,N:860-925] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN2 ; ELECTRON MICROSCOPY

e5l4kN3[N:786-940] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e5gjrN3[N:785-816,N:878-939] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e5gjr11[1:785-816,1:878-939] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e5t0gU2[U:786-814,U:836-844,U:880-917] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e5t0hU2[U:786-814,U:836-844,U:880-917] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e5t0iU3[U:786-814,U:836-844,U:880-917] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e5t0jU3[U:786-814,U:836-844,U:880-917] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e5t0cAU3[AU:786-814,AU:836-844,AU:880-917] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e5t0cBU1[BU:786-814,BU:836-844,BU:880-917] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e5mpbN1[N:756-787,N:860-925] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN2 ; ELECTRON MICROSCOPY

e5mpcN1[N:756-787,N:860-925] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN2 ; ELECTRON MICROSCOPY

e5wviN2[N:755-787,N:860-925] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN2 ; ELECTRON MICROSCOPY

e5wvkN1[N:755-787,N:860-925] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN2 ; ELECTRON MICROSCOPY

e5ln3N1[N:785-816,N:878-938] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e5mpdN1[N:756-787,N:860-925] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN2 ; ELECTRON MICROSCOPY

e5vhfU3[U:786-844,U:880-935] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e5vhsU2[U:786-844,U:880-935] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e5vgzU1[U:786-844,U:880-935] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e5vhhU1[U:786-844,U:880-935] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e5vhiU1[U:786-844,U:880-935] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e5mpeN1[N:756-787,N:860-925] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN2 ; ELECTRON MICROSCOPY

e6epcN2[N:786-953] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e6epdN3[N:786-953] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e6epeN2[N:786-953] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e6epfN1[N:786-953] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e5vfpU1[U:786-814,U:836-844,U:880-917] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e6fvtN3[N:756-787,N:860-925] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN2 ; ELECTRON MICROSCOPY

e5vfqU1[U:786-814,U:836-844,U:880-917] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e5vfrU2[U:786-814,U:836-844,U:880-917] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e5vfsU1[U:786-814,U:836-844,U:880-917] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e5vftU2[U:786-814,U:836-844,U:880-917] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e5vfuU1[U:786-814,U:836-844,U:880-917] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e6fvuN3[N:756-787,N:860-925] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN2 ; ELECTRON MICROSCOPY

e6fvvN3[N:756-787,N:860-925] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN2 ; ELECTRON MICROSCOPY

e6fvwN3[N:756-787,N:860-925] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN2 ; ELECTRON MICROSCOPY

e6fvxN3[N:756-787,N:860-925] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN2 ; ELECTRON MICROSCOPY

e6fvyN1[N:756-787,N:860-925] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN2 ; ELECTRON MICROSCOPY

e6msjU1[U:786-927] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e6mskU3[U:786-927] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e6mseU2[U:785-816,U:878-917] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e6msgU3[U:785-816,U:878-927] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e6mshU3[U:785-816,U:878-927] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e6msbU1[U:785-816,U:878-917] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e6msdU3[U:785-816,U:878-917] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e6j2cN1[N:756-787,N:860-925] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN2 ; ELECTRON MICROSCOPY

e6j2qN2[N:756-787,N:860-925] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN2 ; ELECTRON MICROSCOPY

e6j2xN3[N:756-787,N:860-925] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN2 ; ELECTRON MICROSCOPY

e6j2nN2[N:755-787,N:860-925] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN2 ; ELECTRON MICROSCOPY

e6j30N1[N:755-787,N:860-925] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN2 ; ELECTRON MICROSCOPY

e6wjdU2[U:785-816,U:878-917] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e6wjnU1[U:786-814,U:836-844,U:880-917] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e7qo5N3[N:755-767,N:858-925] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN2 ; ELECTRON MICROSCOPY

e8amzN3[N:795-826,N:908-947] Image Pymol Jmol Links: PDB, SCOP, CATH

26S proteasome non-ATPase regulatory subunit 1 homolog ; ELECTRON MICROSCOPY

e7w37U2[U:786-917] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e7w3aU1[U:786-927] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e7w3cU1[U:786-927] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e7w3fU1[U:786-927] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e7w3gU2[U:786-927] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e7w3hU2[U:786-927] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e7w3iU2[U:786-927] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e7w3jU1[U:786-927] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e7w3kU2[U:786-927] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e7w39U1[U:785-816,U:878-917] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e7w3bU2[U:785-816,U:878-927] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e7w3mU3[U:785-816,U:878-927] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e7w38U2[U:785-816,U:878-917] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e7qo3N1[N:755-767,N:858-925] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN2 ; ELECTRON MICROSCOPY

e7qo6N1[N:755-767,N:858-925] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN2 ; ELECTRON MICROSCOPY

e8cvtU1[U:786-814,U:836-844,U:880-917] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e7qy7U2[U:786-814,U:836-844,U:880-917] Image Pymol Jmol Links: PDB, SCOP, CATH

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e7qyaU2[U:786-814,U:836-844,U:880-917] Image Pymol Jmol Links: PDB, SCOP, CATH

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e7qybU2[U:786-927] Image Pymol Jmol Links: PDB, SCOP, CATH

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e7qxnU1[U:785-816,U:878-917] Image Pymol Jmol Links: PDB, SCOP, CATH

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e7qxpU1[U:785-816,U:878-917] Image Pymol Jmol Links: PDB, SCOP, CATH

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e7qxuU3[U:785-816,U:878-917] Image Pymol Jmol Links: PDB, SCOP, CATH

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e7qxwU3[U:785-816,U:878-917] Image Pymol Jmol Links: PDB, SCOP, CATH

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

e7qxxU3[U:785-816,U:878-917] Image Pymol Jmol Links: PDB, SCOP, CATH

26S proteasome non-ATPase regulatory subunit 1 ; ELECTRON MICROSCOPY

X: Glycosyl hydrolase domain-like

some similarity with Ig fold

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