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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

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

X: Flavodoxin-like
H: SGNH hydrolase
T: SGNH hydrolase
F: Lipase_GDSL_2

PF13472 CL0264

Representatives:

e1es9A1[A:5-216] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PLATELET-ACTIVATING FACTOR ACETYLHYDROLASE IB GAMMA SUBUNIT ; X-RAY DIFFRACTION 1.2Å

e2hsjA1[A:1-211] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

Putative platelet activating factor ; ligands: GOL,MG ; X-RAY DIFFRACTION 1.5Å

e1yzfA1[A:1-195] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

lipase/acylhydrolase ; X-RAY DIFFRACTION 1.8Å

e3bzwA1[A:38-285] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

Putative lipase ; ligands: ACT,SO4 ; X-RAY DIFFRACTION 1.87Å

e1jrlA1[A:1-179] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Acyl-CoA Thioesterase I ; ligands: IMD,SO4 ; X-RAY DIFFRACTION 1.93Å

e1vjgA1[A:5-205] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

putative lipase from the G-D-S-L family ; X-RAY DIFFRACTION 2.01Å

e2o14A2[A:160-367] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

Hypothetical protein yxiM ; X-RAY DIFFRACTION 2.1Å

e3dc7A1[A:18-224] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

Putative uncharacterized protein lp_3323 ; ligands: NA,SO4 ; X-RAY DIFFRACTION 2.12Å

e4k3uA1[A:44-101,A:225-393] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GDSL-like Lipase/Acylhydrolase family protein ; ligands: EPE ; X-RAY DIFFRACTION 2.158Å

e1escA1[A:4-305] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ESTERASE ; X-RAY DIFFRACTION

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.

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