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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

X: Ferritin/Heme oxygenase/4-helical cytokines
H: 4-helical cytokines
T: 4-helical cytokines
F: Interferon

PF00143 CL0053

Representatives:

e1b5lA1[A:1-164] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTERFERON TAU ; ligands: SO4 ; X-RAY DIFFRACTION 2.1Å

e1au1A1[A:1-166] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTERFERON-BETA ; ligands: ZN ; X-RAY DIFFRACTION 2.2Å

e1ifaA1[A:3-160] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

INTERFERON-BETA ; ligands: ASN ; X-RAY DIFFRACTION

e1wu3I1[I:1-161] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Interferon beta ; X-RAY DIFFRACTION 1.8Å

e1au1B1[B:1-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTERFERON-BETA ; ligands: ZN ; X-RAY DIFFRACTION 2.2Å

e1itfA1[A:1-163] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTERFERON ALPHA-2A ; SOLUTION NMR

e1rh2B1[B:8-158] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTERFERON-ALPHA 2B ; X-RAY DIFFRACTION 2.9Å

e1rh2A1[A:6-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTERFERON-ALPHA 2B ; ligands: ZN ; X-RAY DIFFRACTION 2.9Å

e1rh2E1[E:8-158] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTERFERON-ALPHA 2B ; X-RAY DIFFRACTION 2.9Å

e1rh2F1[F:10-156] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTERFERON-ALPHA 2B ; X-RAY DIFFRACTION 2.9Å

e2hymB1[B:1-163] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Interferon alpha-2 ; SOLUTION NMR

e1rh2C1[C:11-156] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTERFERON-ALPHA 2B ; X-RAY DIFFRACTION 2.9Å

e1rh2D1[D:8-158] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTERFERON-ALPHA 2B ; X-RAY DIFFRACTION 2.9Å

e3pivA1[A:1-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Interferon ; ligands: NI ; X-RAY DIFFRACTION 2.086Å

e2kz1A1[A:1-165] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Interferon alpha-2 ; SOLUTION NMR

e3oq3A1[A:1-166] Image Pymol Jmol Links: PDB, SCOP, CATH

INTERFERON ALPHA-5 ; ligands: ACT,CL,EDO,EPE,ZN ; X-RAY DIFFRACTION 2.1Å

e3piwA1[A:6-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Type I interferon 2 ; X-RAY DIFFRACTION 1.49Å

e3se4B1[B:2-161] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTERFERON OMEGA-1 ; X-RAY DIFFRACTION 3.5Å

e3ux9A1[A:9-156] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTERFERON ALPHA-1/13 ; X-RAY DIFFRACTION 2.8Å

e2lmsA1[A:1-165] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTERFERON ALPHA-2 ; ligands: A2G ; SOLUTION NMR

e3s9dA1[A:8-156] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTERFERON ALPHA-2 ; X-RAY DIFFRACTION 2.0Å

e2lagA1[A:1-165] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTERFERON ALPHA-2 ; SOLUTION NMR

e3se3B1[B:8-156] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTERFERON ALPHA 2B ; X-RAY DIFFRACTION 4.0Å

e3pivB1[B:4-160] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Interferon ; ligands: NI ; X-RAY DIFFRACTION 2.086Å

e3wcyI1[I:1-160] Image Pymol Jmol Links: PDB, SCOP, CATH

INTERFERON BETA ; X-RAY DIFFRACTION 2.9Å

e3ux9C2[C:9-156] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTERFERON ALPHA-1/13 ; X-RAY DIFFRACTION 2.8Å

e3s9dC2[C:8-97,C:117-155] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

INTERFERON ALPHA-2 ; X-RAY DIFFRACTION 2.0Å

e4ypgC1[C:-1-157] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Interferon alpha-2 ; ligands: NI ; X-RAY DIFFRACTION 3.0Å

e4ypgD1[D:-1-159] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Interferon alpha-2 ; ligands: NI ; X-RAY DIFFRACTION 3.0Å

e6jhdA1[A:1-166] Image Pymol Jmol Links: PDB, SCOP, CATH

Interferon alpha-8 ; SOLUTION NMR

e7e0eA1[A:4-161] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Interferon alpha-2 ; ligands: GOL,PO4 ; X-RAY DIFFRACTION 2.100Å

e7wkhA1[A:2-160] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Interferon ; X-RAY DIFFRACTION 1.58Å

e7wz5A1[A:2-162] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Interferon C ; ligands: NAG ; X-RAY DIFFRACTION 1.39Å

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 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

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