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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

X: Cytidine deaminase-like
H: Cytidine deaminase-like
T: Cytidine deaminase-like
F: JAB

PF01398 CL0366

Representatives:

e5cw3A1[A:3-162] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

BRCA1/BRCA2-containing complex subunit 3 ; ligands: ZN ; X-RAY DIFFRACTION 2.550Å

e4d10E1[E:24-250] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

COP9 SIGNALOSOME COMPLEX SUBUNIT 5 ; ligands: ZN ; X-RAY DIFFRACTION 3.80Å

e3j7jF1[F:89-257] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB

e3j8bF1[F:89-257] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Eukaryotic translation initiation factor 3 subunit F ; ELECTRON MICROSCOPY

e3jckE1[E:3-163] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome regulatory subunit RPN8 ; ELECTRON MICROSCOPY

e3jckG1[G:24-205] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ubiquitin carboxyl-terminal hydrolase RPN11 ; ligands: ZN ; ELECTRON MICROSCOPY

e5gjqV1[V:28-163,V:190-209] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 14 ; ELECTRON MICROSCOPY

e5mpbV1[V:18-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ubiquitin carboxyl-terminal hydrolase RPN11 ; ELECTRON MICROSCOPY

e5mpcV2[V:18-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ubiquitin carboxyl-terminal hydrolase RPN11 ; ELECTRON MICROSCOPY

e5mpdV2[V:18-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ubiquitin carboxyl-terminal hydrolase RPN11 ; ELECTRON MICROSCOPY

e5mpeV1[V:18-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ubiquitin carboxyl-terminal hydrolase RPN11 ; ELECTRON MICROSCOPY

e4cr2V2[V:23-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S PROTEASOME REGULATORY SUBUNIT RPN11 ; ELECTRON MICROSCOPY

e4cr3V1[V:23-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S PROTEASOME REGULATORY SUBUNIT RPN11 ; ELECTRON MICROSCOPY

e4cr4V1[V:23-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S PROTEASOME REGULATORY SUBUNIT RPN11 ; ELECTRON MICROSCOPY

e5a5bV2[V:23-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S PROTEASOME REGULATORY SUBUNIT RPN11 ; ELECTRON MICROSCOPY

e3jcoV1[V:23-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ubiquitin carboxyl-terminal hydrolase RPN11 ; ELECTRON MICROSCOPY

e3jcpV2[V:23-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ubiquitin carboxyl-terminal hydrolase RPN11 ; ELECTRON MICROSCOPY

e5gjrV2[V:28-163,V:190-209] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 14 ; ELECTRON MICROSCOPY

e5gjr91[9:28-163,9:190-209] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S proteasome non-ATPase regulatory subunit 14 ; ELECTRON MICROSCOPY

e4cr2U2[U:5-176] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

26S PROTEASOME REGULATORY SUBUNIT RPN8 ; 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 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