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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

X: Immunoglobulin-like beta-sandwich
H: Immunoglobulin-related
T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like
F: Inhibitor_I42

PF09394 CL0159

Representatives:

e2nqdA1[A:3-110] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Chagasin ; ligands: CL,NA ; X-RAY DIFFRACTION 1.740Å

e2h7wB1[B:3-109] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Chagasin ; X-RAY DIFFRACTION 1.70Å

e3cbkB1[B:3-110] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Chagasin ; X-RAY DIFFRACTION 2.67Å

e2h7wA1[A:3-110] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Chagasin ; X-RAY DIFFRACTION 1.70Å

e2fo8A1[A:3-110] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Chagasin ; SOLUTION NMR

e3cbjB1[B:3-110] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Chagasin ; ligands: PO4 ; X-RAY DIFFRACTION 1.80Å

e2nnrA1[A:3-110] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Chagasin ; ligands: GOL,SO4 ; X-RAY DIFFRACTION 1.700Å

e2oulB1[B:4-110] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Chagasin ; X-RAY DIFFRACTION 2.200Å

e2nnrB1[B:3-110] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Chagasin ; ligands: CL,GOL ; X-RAY DIFFRACTION 1.700Å

e3m86A1[A:-4-123] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

AMOEBIASIN-2 ; ligands: CL ; X-RAY DIFFRACTION 1.65Å

e3e1zA1[A:2-110] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHAGASIN ; ligands: ACY,FMT,ZN ; X-RAY DIFFRACTION 1.86Å

e3m86B1[B:-4-123] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

AMOEBIASIN-2 ; ligands: 1PE,CL,SO4 ; X-RAY DIFFRACTION 1.65Å

e3m88A1[A:-3-123] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

AMOEBIASIN-2 ; ligands: CL ; X-RAY DIFFRACTION 1.9Å

e3m88B1[B:-4-123] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

AMOEBIASIN-2 ; ligands: CL,SO4 ; X-RAY DIFFRACTION 1.9Å

e2wgnB1[B:7-111] Image Pymol Jmol Links: PDB, SCOP, CATH

INHIBITOR OF CYSTEINE PEPTIDASE COMPND 3 ; SOLUTION NMR

e5swkC1[C:2-84] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

De novo protein based on the inhibitor Amoebiasin-1 ; ligands: GOL,SO4 ; X-RAY DIFFRACTION 1.920Å

e5swkD1[D:1-84] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

De novo protein based on the inhibitor Amoebiasin-1 ; ligands: CL,GOL,SO4 ; X-RAY DIFFRACTION 1.920Å

e6cjzA1[A:1-105] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Amoebiasin-1 ; SOLUTION NMR

e2c34A1[A:1-113] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INHIBITOR OF CYSTEINE PEPTIDASES ; SOLUTION NMR

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.

X: Glycosyl hydrolase domain-like

some similarity with Ig fold

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