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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

X: Bromodomain-like
H: IVS-encoded protein-like
T: IVS-encoded protein-like
F: 23S_rRNA_IVP

PF05635

Representatives:

e2rldA1[A:1-115] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

Uncharacterized protein ; ligands: CA,CL,EDO ; X-RAY DIFFRACTION 1.70Å

e2gscA1[A:9-125] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putative uncharacterized protein XCC0516 ; X-RAY DIFFRACTION 2.45Å

e2gscB1[B:9-123] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putative uncharacterized protein XCC0516 ; X-RAY DIFFRACTION 2.45Å

e2gscD1[D:9-123] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putative uncharacterized protein XCC0516 ; X-RAY DIFFRACTION 2.45Å

e2gscE1[E:10-121] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putative uncharacterized protein XCC0516 ; X-RAY DIFFRACTION 2.45Å

e2gscC1[C:9-122] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putative uncharacterized protein XCC0516 ; X-RAY DIFFRACTION 2.45Å

e2rldD1[D:7-114] Image Pymol Jmol Links: PDB, SCOP, CATH

Uncharacterized protein ; ligands: CA,CL,EDO ; X-RAY DIFFRACTION 1.70Å

e2rldC1[C:1-115] Image Pymol Jmol Links: PDB, SCOP, CATH

Uncharacterized protein ; ligands: CA,CL,EDO ; X-RAY DIFFRACTION 1.70Å

e2rldE1[E:8-115] Image Pymol Jmol Links: PDB, SCOP, CATH

Uncharacterized protein ; ligands: EDO ; X-RAY DIFFRACTION 1.70Å

e2rldB1[B:5-115] Image Pymol Jmol Links: PDB, SCOP, CATH

Uncharacterized protein ; ligands: EDO ; X-RAY DIFFRACTION 1.70Å

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