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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: U3snoRNP10

PF12397

Representatives:

e5wylC1[C:29-446] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putative uncharacterized protein ; X-RAY DIFFRACTION 2.640Å

e6lqtAE1[AE:2-432] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

U3 small nucleolar RNA-associated protein 10 ; ELECTRON MICROSCOPY

e6zqaUJ1[UJ:2-424,UJ:488-492] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

U3 small nucleolar RNA-associated protein 10 ; ELECTRON MICROSCOPY

e6rxxUJ1[UJ:3-458] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

UTP10 ; ELECTRON MICROSCOPY

e6rxzUJ1[UJ:3-458] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

UTP10 ; ELECTRON MICROSCOPY

e7d5tAE1[AE:2-432] Image Pymol Jmol Links: PDB, SCOP, CATH

U3 small nucleolar RNA-associated protein 10 ; ELECTRON MICROSCOPY

e7sukLM1[LM:2-432] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

U3 small nucleolar RNA-associated protein 10 ; ELECTRON MICROSCOPY

e5wykAE1[AE:3-421] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

U3 small nucleolar RNA-associated protein 10 ; ELECTRON MICROSCOPY

e5wlcLM1[LM:2-432] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Utp10 ; ELECTRON MICROSCOPY

e6nd4M1[M:2-432] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Utp10 ; ELECTRON MICROSCOPY

e6ke6AE1[AE:2-432] Image Pymol Jmol Links: PDB, SCOP, CATH

U3 small nucleolar RNA-associated protein 10 ; ELECTRON MICROSCOPY

e5wylA1[A:27-458] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putative uncharacterized protein ; X-RAY DIFFRACTION 2.640Å

e5oqlG1[G:3-365] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Utp10 ; ELECTRON MICROSCOPY

e5wy4A1[A:31-363] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative uncharacterized protein ; X-RAY DIFFRACTION 2.500Å

e6rxtUJ1[UJ:3-458] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

UTP10 ; ELECTRON MICROSCOPY

e6rxyUJ1[UJ:3-458] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Utp10 ; 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