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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

X: Lysozyme-like
H: Lysozyme-like
T: Lysozyme-like
F: Phage_lysozyme,Gp5_OB

PF00959 PF06714

Representatives:

e1k28A3[A:130-345] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TAIL-ASSOCIATED LYSOZYME ; X-RAY DIFFRACTION 2.9Å

e6d26A1[A:232-1355] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Prostaglandin D2 receptor 2, Endolysin chimera ; ligands: PGE,SIN,SO4 ; X-RAY DIFFRACTION 2.800Å

e1wthA1[A:130-348] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Tail-associated lysozyme ; X-RAY DIFFRACTION 2.80Å

e2z6bA3[A:130-345] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Tail-associated lysozyme ; X-RAY DIFFRACTION 3.10Å

e5zkqB2[B:1001-1117] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Platelet-activating factor receptor,Endolysin,Endolysin,Platelet-activating factor receptor ; ligands: SO4 ; X-RAY DIFFRACTION 2.9Å

e6d27A2[A:232-1355] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Prostaglandin D2 receptor 2, Endolysin chimera ; ligands: MES,PGE,SO4 ; X-RAY DIFFRACTION 2.700Å

e1pdlA1[A:130-345] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Tail-associated lysozyme ; ELECTRON MICROSCOPY

e1pdlB1[B:130-345] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Tail-associated lysozyme ; ELECTRON MICROSCOPY

e5zhpA2[A:256-1111] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Muscarinic acetylcholine receptor M3,Endolysin,Endolysin,Muscarinic acetylcholine receptor M3 ; ligands: MAL ; X-RAY DIFFRACTION 3.1Å

e5zhpB2[B:256-1111] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Muscarinic acetylcholine receptor M3,Endolysin,Endolysin,Muscarinic acetylcholine receptor M3 ; ligands: CIT ; X-RAY DIFFRACTION 3.1Å

e1pdlC1[C:130-345] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Tail-associated lysozyme ; ELECTRON MICROSCOPY

e5iv5YA1[YA:130-345] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Peptidoglycan hydrolase gp5 ; ELECTRON MICROSCOPY

e6j20A2[A:226-244] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Substance-P receptor,Endolysin ; X-RAY DIFFRACTION 2.6Å

e5iv5YB3[YB:130-345] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Peptidoglycan hydrolase gp5 ; ELECTRON MICROSCOPY

e6j21A2[A:226-244] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Substance-P receptor,Endolysin ; X-RAY DIFFRACTION 3.20Å

e5iv5YC1[YC:130-345] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Peptidoglycan hydrolase gp5 ; ELECTRON MICROSCOPY

e6k1qA2[A:1012F-317] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Endothelin B receptor,Endolysin,Endothelin B receptor ; ligands: PO4 ; X-RAY DIFFRACTION 2.600Å

e7m8wA1[A:232-1154] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Prostaglandin D2 receptor 2, Endolysin chimera ; ligands: SO4 ; 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.

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