Evolutionary classification of protein domain structures
alpha arraysalpha-helix arrays with mainly perpendicular helices
![](/ecod/img/m.gif)
![](/ecod/img/m.gif)
![](/ecod/img/m.gif)
![](/ecod/img/m.gif)
Representatives:
e1d8jA1[A:1-81]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
GENERAL TRANSCRIPTION FACTOR TFIIE-BETA ; SOLUTION NMR
e5fywX2[X:123-187] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
TRANSCRIPTION INITIATION FACTOR IIE SUBUNIT BETA ; ELECTRON MICROSCOPY
e1d8kA1[A:1-81] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
GENERAL TRANSCRIPTION FACTOR TFIIE-BETA ; SOLUTION NMR
e5fmfS1[S:125-188] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
TRANSCRIPTION INITIATION FACTOR IIE SUBUNIT BETA, TFA2 ; ELECTRON MICROSCOPY
e5fz5X2[X:123-188] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
TRANSCRIPTION INITIATION FACTOR IIE SUBUNIT BETA ; ELECTRON MICROSCOPY
e5iy6R2[R:75-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e5svai2[i:125-187] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e5iy7R1[R:75-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e5iy8R1[R:75-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e5iy9R1[R:75-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e5iyaR1[R:75-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e5iybR1[R:75-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e5iycR1[R:75-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e5iydR1[R:75-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e5oqjX1[X:123-188] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e5oqmX1[X:123-188] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e6gylX1[X:123-188] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e6gymX3[X:123-188] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e6o9lR2[R:75-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e7lbmR2[R:75-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e7eg9V1[V:68-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e7egaV1[V:68-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e7egbV2[V:68-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e7nvrX3[X:72-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e7nvsX3[X:72-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e7nvtX3[X:72-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e7nvuX3[X:72-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e7nvyX2[X:72-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e7nvzX3[X:72-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e7nw0X1[X:72-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e7egcV1[V:68-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e7enaEB2[EB:68-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e7encEB3[EB:68-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e7ml0X1[X:123-188] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e7ml1X2[X:123-188] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e7ml2X1[X:123-188] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e7ml4X1[X:123-188] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e8gxqEB3[EB:72-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e8gxsEB3[EB:72-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e8bvwX2[X:72-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
e8byqX1[X:72-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcription initiation factor IIE subunit beta ; ELECTRON MICROSCOPY
![](/ecod/img/p.gif)
Pseudo group of domains that do not map to PFam family profiles. Domains inside should not be considered as in one family.
![](/ecod/img/p.gif)
lacks the N-terminal helix, circularly permuted wing
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
extended segmentsextended, non-globular segments, frequently bind to other proteins to form complexes