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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: Common fold of diphtheria toxin/transcription factors/cytochrome f
F: STAT_bind

PF02864 CL0073

Representatives:

e1bg1A1[A:322-465] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (TRANSCRIPTION FACTOR STAT3B) ; X-RAY DIFFRACTION 2.25Å

e4e68A2[A:322-465] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SIGNAL TRANSDUCER AND ACTIVATOR OF TRANSCRIPTION 3 ; X-RAY DIFFRACTION 2.58Å

e3cwgA6[A:322-465] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SIGNAL TRANSDUCER AND ACTIVATOR OF TRANSCRIPTION 3 ; X-RAY DIFFRACTION 3.05Å

e1yvlB1[B:1318-1459] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SIGNAL TRANSDUCER AND ACTIVATOR OF TRANSCRIPTION 1-ALPHA/BETA ; ligands: AU ; X-RAY DIFFRACTION 3.0Å

e1yvlA5[A:299-431] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SIGNAL TRANSDUCER AND ACTIVATOR OF TRANSCRIPTION 1-ALPHA/BETA ; ligands: AU ; X-RAY DIFFRACTION 3.0Å

e1bf5A2[A:309-450] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SIGNAL TRANSDUCER AND ACTIVATOR OF TRANSCRIPTION 1-ALPHA/BETA ; X-RAY DIFFRACTION 2.900Å

e3cwgB2[B:1322-1465] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SIGNAL TRANSDUCER AND ACTIVATOR OF TRANSCRIPTION 3 ; X-RAY DIFFRACTION 3.05Å

e1y1uC2[C:333-470] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Signal transducer and activator of transcription 5A ; X-RAY DIFFRACTION 3.21Å

e1y1uA4[A:333-470] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Signal transducer and activator of transcription 5A ; X-RAY DIFFRACTION 3.21Å

e1y1uB4[B:333-470] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Signal transducer and activator of transcription 5A ; X-RAY DIFFRACTION 3.21Å

e4y5uB1[B:274-414] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Signal transducer and activator of transcription 6 ; X-RAY DIFFRACTION 2.70Å

e4y5uA1[A:274-414] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Signal transducer and activator of transcription 6 ; X-RAY DIFFRACTION 2.70Å

e4y5wA4[A:274-414] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Signal transducer and activator of transcription 6 ; X-RAY DIFFRACTION 3.10Å

e4y5wB2[B:274-414] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Signal transducer and activator of transcription 6 ; X-RAY DIFFRACTION 3.10Å

e6qhdA4[A:322-465] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Signal transducer and activator of transcription 3 ; X-RAY DIFFRACTION 2.85Å

e6mbwA2[A:333-470] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Signal transducer and activator of transcription 5B ; X-RAY DIFFRACTION 3.290Å

e6qhdB2[B:322-465] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Signal transducer and activator of transcription 3 ; X-RAY DIFFRACTION 2.85Å

e6mbwB4[B:333-470] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Signal transducer and activator of transcription 5B ; X-RAY DIFFRACTION 3.290Å

e6mbzA4[A:333-470] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Signal transducer and activator of transcription 5B ; X-RAY DIFFRACTION 3.210Å

e6mbzB3[B:333-470] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Signal transducer and activator of transcription 5B ; X-RAY DIFFRACTION 3.210Å

e6njsA2[A:322-465] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Signal transducer and activator of transcription 3 ; X-RAY DIFFRACTION 2.700Å

e6nuqA1[A:322-465] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Signal transducer and activator of transcription 3 ; X-RAY DIFFRACTION 3.150Å

e6tlcA1[A:322-465] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Signal transducer and activator of transcription 3 ; X-RAY DIFFRACTION 2.9Å

e6tlcB1[B:322-465] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Signal transducer and activator of transcription 3 ; X-RAY DIFFRACTION 2.9Å

e6ux2A4[A:317-457] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Signal transducer and activator of transcription 2 ; X-RAY DIFFRACTION 3.008Å

e7nufA1[A:318-459] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Signal transducer and activator of transcription 1-alpha/beta ; X-RAY DIFFRACTION 2.00Å

e8d3fA2[A:309-450] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Signal transducer and activator of transcription 1-alpha/beta,Inhibitor of STAT1-dependent transcription TgIST ; X-RAY DIFFRACTION 2.97Å

e7znnD2[D:318-457] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Signal transducer and activator of transcription ; ELECTRON MICROSCOPY

e7tvaA1[A:333-470] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Signal transducer and activator of transcription 5A ; X-RAY DIFFRACTION 2.834Å

e7tvaB2[B:333-470] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Signal transducer and activator of transcription 5A ; X-RAY DIFFRACTION 2.834Å

e7tvbA3[A:333-470] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Signal transducer and activator of transcription 5A ; ligands: GOL ; X-RAY DIFFRACTION 2.650Å

e7ubtA2[A:333-470] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Signal transducer and activator of transcription 5A ; X-RAY DIFFRACTION 2.350Å

e7uc6A4[A:333-470] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Signal transducer and activator of transcription 5A ; X-RAY DIFFRACTION 3.100Å

e7uc7A3[A:333-470] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Signal transducer and activator of transcription 5A ; ligands: GOL ; X-RAY DIFFRACTION 3.100Å

e6wczA2[A:317-509] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Signal transducer and activator of transcription 2 ; ELECTRON MICROSCOPY

e5d39D2[D:273-414] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Signal transducer and activator of transcription 6 ; X-RAY DIFFRACTION 3.20Å

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