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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: Sel1

PF08238 CL0020

Representatives:

e1klxA1[A:3-135] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cysteine Rich Protein B ; X-RAY DIFFRACTION 1.95Å

e4bwrA2[A:325-467] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN CORRESPONDING TO LOCUS C5321 FROM CFT073 E.COLI STRAIN ; ligands: EDO ; X-RAY DIFFRACTION 1.74Å

e5ks5A1[A:623-725] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Eukaryotic elongation factor 2 kinase ; SOLUTION NMR

e2xm6A1[A:2-324] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB

e2xm6A2[A:325-464] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB

e4bwrA1[A:1-324] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN CORRESPONDING TO LOCUS C5321 FROM CFT073 E.COLI STRAIN ; ligands: CL,EDO,MG ; X-RAY DIFFRACTION 1.74Å

e3rjvA2[A:20-227] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative Sel1 repeat protein ; ligands: EDO ; X-RAY DIFFRACTION 1.65Å

e3e4bD1[D:22-41,D:129-430] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ALGK ; ligands: GOL ; X-RAY DIFFRACTION 2.5Å

e3e4bA6[A:6-41,A:76-434] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ALGK ; ligands: CL ; X-RAY DIFFRACTION 2.5Å

e3e4bB1[B:12-436] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ALGK ; ligands: CL,GOL ; X-RAY DIFFRACTION 2.5Å

e3e4bC1[C:16-438] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ALGK ; ligands: CL,GOL ; X-RAY DIFFRACTION 2.5Å

e5v7vA1[A:26-268,A:317-686] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ERAD-associated E3 ubiquitin-protein ligase component HRD3 ; ligands: BMA,NAG ; ELECTRON MICROSCOPY

e6dehB1[B:49-352] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TPR repeat protein, protein-protein interaction ; ligands: GOL,NI,PEG ; X-RAY DIFFRACTION 1.8Å

e6ok0D1[D:8-139] Image Pymol Jmol Links: PDB, SCOP, CATH

Sel1 repeat protein ; ligands: CL,IMD ; X-RAY DIFFRACTION 2.170Å

e6ok0A1[A:9-139] Image Pymol Jmol Links: PDB, SCOP, CATH

Sel1 repeat protein ; ligands: CL ; X-RAY DIFFRACTION 2.170Å

e6ok0B1[B:9-139] Image Pymol Jmol Links: PDB, SCOP, CATH

Sel1 repeat protein ; X-RAY DIFFRACTION 2.170Å

e6ok0C1[C:9-139] Image Pymol Jmol Links: PDB, SCOP, CATH

Sel1 repeat protein ; ligands: PGE ; X-RAY DIFFRACTION 2.170Å

e6vjyA1[A:26-270,A:313-686] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ERAD-associated E3 ubiquitin-protein ligase component HRD3 ; ELECTRON MICROSCOPY

e6vjzA1[A:26-270,A:313-686] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ERAD-associated E3 ubiquitin-protein ligase component HRD3 ; ELECTRON MICROSCOPY

e6vk0A1[A:26-270,A:313-686] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ERAD-associated E3 ubiquitin-protein ligase component HRD3 ; ELECTRON MICROSCOPY

e6vk1A1[A:26-270,A:313-686] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ERAD-associated E3 ubiquitin-protein ligase component HRD3 ; ELECTRON MICROSCOPY

e6vk3A1[A:26-686] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Hrd3 ; ELECTRON MICROSCOPY

e6orcB1[B:1-134] Image Pymol Jmol Links: PDB, SCOP, CATH

Sel1 repeat protein ; X-RAY DIFFRACTION 2.970Å

e6lchA1[A:24-287] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Sel1 repeat family protein ; X-RAY DIFFRACTION 1.899Å

e6orcA1[A:3-135] Image Pymol Jmol Links: PDB, SCOP, CATH

Sel1 repeat protein ; X-RAY DIFFRACTION 2.970Å

e6ur7A1[A:2-246] Image Pymol Jmol Links: PDB, SCOP, CATH

Sel1 repeat family protein ; ligands: GOL,PEG,PG4,SO4 ; X-RAY DIFFRACTION 2.709Å

e6ur7B1[B:-1-249] Image Pymol Jmol Links: PDB, SCOP, CATH

Sel1 repeat family protein ; ligands: GOL,PEG,PGE,SO4 ; X-RAY DIFFRACTION 2.709Å

e6orkB1[B:25-269] Image Pymol Jmol Links: PDB, SCOP, CATH

Sel1 repeat protein ; X-RAY DIFFRACTION 3.000Å

e6orkA1[A:24-269] Image Pymol Jmol Links: PDB, SCOP, CATH

Sel1 repeat protein ; X-RAY DIFFRACTION 3.000Å

e6orkC1[C:24-269] Image Pymol Jmol Links: PDB, SCOP, CATH

Sel1 repeat protein ; X-RAY DIFFRACTION 3.000Å

e6onwA1[A:91-404] Image Pymol Jmol Links: PDB, SCOP, CATH

Sel1 repeat protein ; ligands: EDO,PEG ; X-RAY DIFFRACTION 2.950Å

e7ulaB1[B:138-457] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Alginate biosynthesis protein AlgK ; ligands: CL,GOL,NI ; X-RAY DIFFRACTION 2.46Å

e1ouvA1[A:28-292] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CONSERVED HYPOTHETICAL SECRETED PROTEIN ; X-RAY DIFFRACTION 2.0Å

e5b26A1[A:352-524] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Protein sel-1 homolog 1 ; X-RAY DIFFRACTION 2.60Å

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