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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

X: Alpha-beta plaits
H: Origin of replication-binding domains
T: Origin of replication-binding domains
F: T_Ag_DNA_bind

PF02217 CL0169

Representatives:

e2fufA1[A:131-256] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Large T antigen ; ligands: FLC ; X-RAY DIFFRACTION 1.450Å

e1tbdA1[A:3-128] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SV40 T-ANTIGEN ; SOLUTION NMR

e2tbdA1[A:3-128] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SV40 T ANTIGEN ; SOLUTION NMR

e2itlA1[A:134-253] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

large T antigen ; X-RAY DIFFRACTION 1.65Å

e2itjA1[A:132-256] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LARGE T ANTIGEN ; X-RAY DIFFRACTION 2.5Å

e1z1dB1[B:3-128] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Large T antigen ; SOLUTION NMR

e2ntcB1[B:133-256] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

large T antigen ; X-RAY DIFFRACTION 2.40Å

e2if9B1[B:131-256] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Large T antigen ; X-RAY DIFFRACTION 2.586Å

e2iprB1[B:134-256] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LARGE T ANTIGEN ; X-RAY DIFFRACTION 1.5Å

e2itjB1[B:132-252] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LARGE T ANTIGEN ; X-RAY DIFFRACTION 2.5Å

e2iprA1[A:132-256] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LARGE T ANTIGEN ; X-RAY DIFFRACTION 1.5Å

e2itlB1[B:135-249] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

large T antigen ; X-RAY DIFFRACTION 1.65Å

e2ntcA1[A:132-256] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

large T antigen ; X-RAY DIFFRACTION 2.40Å

e2if9A1[A:131-256] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Large T antigen ; X-RAY DIFFRACTION 2.586Å

e3qk2A1[A:129-261] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LARGE T ANTIGEN ; ligands: SCN ; X-RAY DIFFRACTION 1.64Å

e3qfqA1[A:309-427] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LARGE T ANTIGEN ; X-RAY DIFFRACTION 2.9Å

e4fgnA1[A:133-258] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LARGE T ANTIGEN ; X-RAY DIFFRACTION 3.2Å

e2nl8A1[A:133-249] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

large T antigen ; X-RAY DIFFRACTION 2.25Å

e3qn2A1[A:131-257] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LARGE T ANTIGEN ; ligands: FLC ; X-RAY DIFFRACTION 1.66Å

e3qfqB1[B:309-428] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LARGE T ANTIGEN ; X-RAY DIFFRACTION 2.9Å

e3qfqE1[E:311-427] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LARGE T ANTIGEN ; X-RAY DIFFRACTION 2.9Å

e4gdfA2[A:131-262] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Large T antigen ; X-RAY DIFFRACTION 2.8Å

e4fgnB1[B:129-252] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LARGE T ANTIGEN ; X-RAY DIFFRACTION 3.2Å

e4gdfF1[F:131-262] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Large T antigen ; X-RAY DIFFRACTION 2.8Å

e4gdfE1[E:131-262] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Large T antigen ; X-RAY DIFFRACTION 2.8Å

e4gdfB1[B:131-262] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Large T antigen ; X-RAY DIFFRACTION 2.8Å

e4fb3B1[B:290-403] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Large T antigen ; X-RAY DIFFRACTION 3.79Å

e4fb3E1[E:290-403] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Large T antigen ; X-RAY DIFFRACTION 3.79Å

e4fb3A1[A:290-404] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Large T antigen ; X-RAY DIFFRACTION 3.79Å

e4nbpA1[A:133-261] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LARGE T ANTIGEN ; ligands: TLA ; X-RAY DIFFRACTION 1.31Å

e4lifA1[A:133-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LARGE T ANTIGEN ; ligands: SO4 ; X-RAY DIFFRACTION 2.6Å

e4lmdA1[A:134-261] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Large T antigen ; ligands: FLC,GOL ; X-RAY DIFFRACTION 1.5Å

e4lmdB1[B:132-261] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Large T antigen ; ligands: FLC,GOL ; X-RAY DIFFRACTION 1.5Å

e5d9iA1[A:129-261] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Large T antigen ; ligands: EDO ; X-RAY DIFFRACTION 1.70Å

e5d9iB1[B:129-260] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Large T antigen ; ligands: ACT,CA,EDO ; X-RAY DIFFRACTION 1.70Å

e5cynA1[A:133-259] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Large T antigen ; ligands: EDO ; X-RAY DIFFRACTION 2.7Å

X: LuxS, MPP, ThrRS/AlaRS common domain

looks like an elaborated ferredoxin

X: ClpS-like

contains a HTH motif

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