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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

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

X: Rubredoxin-like

binds one zinc with two CxxC motifs on two beta-hairpins

X: RING/U-box-like

binds two zincs. one in the same way as rubredoxin, probably related to rubredoxin. the other in a similar way as glucocorticoid receptor

X: Glucocorticoid receptor-like

binds zinc with one beta-hairpin and one helix, the helix binds DNA

X: beta-beta-alpha zinc fingers
H: beta-beta-alpha zinc fingers
T: beta-beta-alpha zinc fingers
F: zf-C2H2

PF00096 CL0361

Representatives:

e1a1iA1[A:103-131] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RADR ZIF268 ZINC FINGER PEPTIDE ; ligands: ZN ; X-RAY DIFFRACTION 1.6Å

e2i13B1[B:20-45] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Aart ; ligands: ZN ; X-RAY DIFFRACTION 1.96Å

e2i13B2[B:74-101] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Aart ; ligands: GOL,ZN ; X-RAY DIFFRACTION 1.96Å

e2i13B3[B:46-73] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Aart ; ligands: ZN ; X-RAY DIFFRACTION 1.96Å

e2i13B5[B:102-131] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Aart ; ligands: GOL,ZN ; X-RAY DIFFRACTION 1.96Å

e1bboA1[A:1-28] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HUMAN ENHANCER-BINDING PROTEIN MBP-1 ; ligands: ZN ; SOLUTION NMR

e1p7aA1[A:1-37] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Kruppel-like factor 3 ; ligands: ZN ; SOLUTION NMR

e1x6hA2[A:44-80] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

Transcriptional repressor CTCF ; ligands: ZN ; SOLUTION NMR

e1znfA1[A:0-26] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

31ST ZINC FINGER FROM XFIN ; ligands: ZN ; SOLUTION NMR

e2adrA1[A:102-130] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ADR1 ; ligands: ZN ; SOLUTION NMR

e2cshA1[A:36-60] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

Zinc finger protein 297B ; ligands: ZN ; SOLUTION NMR

e2dlkA2[A:38-73] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

novel protein ; ligands: ZN ; SOLUTION NMR

e2dlqA2[A:35-62] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

GLI-Kruppel family member HKR3 ; ligands: ZN ; SOLUTION NMR

e2drpA2[A:140-165] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (TRAMTRACK DNA-BINDING DOMAIN) ; ligands: ZN ; X-RAY DIFFRACTION

e2eprA1[A:350-384] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

POZ-, AT hook-, and zinc finger-containing protein 1 ; ligands: ZN ; SOLUTION NMR

e2epsA1[A:408-446] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

POZ-, AT hook-, and zinc finger-containing protein 1 ; ligands: ZN ; SOLUTION NMR

e2lv2A2[A:55-85] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

INSULINOMA-ASSOCIATED PROTEIN 1 ; ligands: ZN ; SOLUTION NMR

e2rpcA3[A:89-117] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Zinc finger protein ZIC 3 ; ligands: ZN ; 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.

extended segmentsextended, non-globular segments, frequently bind to other proteins to form complexes