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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

X: cradle loop barrel

Refs: Structure 14, 1489-1498; Current opinion in structural biology 18, 358-365

X: OB-fold
H: Bacterial enterotoxins
T: Bacterial enterotoxins
F: Enterotoxin_b

PF01376 CL0658

Representatives:

e3chbD1[D:1-103] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN ; ligands: UNX ; X-RAY DIFFRACTION 1.25Å

e1eeiE1[E:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (CHOLERA TOXIN B) ; ligands: GAA ; X-RAY DIFFRACTION 2.0Å

e1pzkD1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cholera Toxin B Subunit ; ligands: J12 ; X-RAY DIFFRACTION 1.35Å

e1lt5D1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN ; ligands: TDG ; X-RAY DIFFRACTION 1.7Å

e1lt5G1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN ; ligands: TDG ; X-RAY DIFFRACTION 1.7Å

e1lt6M1[M:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN ; ligands: GAA ; X-RAY DIFFRACTION 2.2Å

e1s5bH1[H:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

cholera toxin B protein (CTB) ; X-RAY DIFFRACTION 2.13Å

e1fd7H1[H:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN B CHAIN ; ligands: AI1 ; X-RAY DIFFRACTION 1.8Å

e3efxF1[F:1-102] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cholera enterotoxin subunit B, Heat-labile enterotoxin B chain ; X-RAY DIFFRACTION 1.940Å

e2o2lG1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Heat-labile enterotoxin B chain ; X-RAY DIFFRACTION 2.5Å

e1s5fH1[H:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PROTEIN (CTB) ; ligands: GAL ; X-RAY DIFFRACTION 2.6Å

e1lt5E1[E:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN ; ligands: TDG ; X-RAY DIFFRACTION 1.7Å

e1xtcG1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN ; X-RAY DIFFRACTION 2.4Å

e1ltbF1[F:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN, SUBUNIT B ; X-RAY DIFFRACTION 2.6Å

e1efiE1[E:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (HEAT-LABILE ENTEROTOXIN B CHAIN) ; ligands: GAT ; X-RAY DIFFRACTION 1.6Å

e1ltsH1[H:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN, SUBUNIT B ; X-RAY DIFFRACTION 1.95Å

e1rf2D1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PROTEIN (CTB) ; ligands: BV4,PGE,TRS ; X-RAY DIFFRACTION 1.35Å

e1jr0D1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B SUBUNIT ; ligands: A24 ; X-RAY DIFFRACTION 1.3Å

e1chpD1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PENTAMER ; X-RAY DIFFRACTION

e3efxH1[H:1-102] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cholera enterotoxin subunit B, Heat-labile enterotoxin B chain ; X-RAY DIFFRACTION 1.940Å

e1jqyY1[Y:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN B CHAIN ; ligands: A32 ; X-RAY DIFFRACTION 2.14Å

e1s5eG1[G:1-102] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PROTEIN (CTB) ; X-RAY DIFFRACTION 1.9Å

e1chqF1[F:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PENTAMER ; X-RAY DIFFRACTION

e1s5dE1[E:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

cholera toxin B protein (CTB) ; ligands: GAL,GOL ; X-RAY DIFFRACTION 1.75Å

e1g8zD1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PROTEIN ; ligands: GAL ; X-RAY DIFFRACTION 2.0Å

e1djrD1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN ; ligands: BEZ,GLA,GOL ; X-RAY DIFFRACTION 1.3Å

e1rdpF1[F:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PROTEIN (CTB) ; ligands: BV3 ; X-RAY DIFFRACTION 1.35Å

e1efiD1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (HEAT-LABILE ENTEROTOXIN B CHAIN) ; ligands: GAT ; X-RAY DIFFRACTION 1.6Å

e1jqyL1[L:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN B CHAIN ; ligands: A32 ; X-RAY DIFFRACTION 2.14Å

e1g8zG1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PROTEIN ; ligands: GAL ; X-RAY DIFFRACTION 2.0Å

e1xtcE1[E:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN ; X-RAY DIFFRACTION 2.4Å

e1ltiD1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

HEAT LABILE ENTEROTOXIN TYPE I ; ligands: GAL ; X-RAY DIFFRACTION 2.13Å

e1chqD1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PENTAMER ; X-RAY DIFFRACTION

e1lt6P1[P:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN ; ligands: GAA ; X-RAY DIFFRACTION 2.2Å

e1s5bF1[F:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

cholera toxin B protein (CTB) ; X-RAY DIFFRACTION 2.13Å

e1s5eN1[N:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PROTEIN (CTB) ; X-RAY DIFFRACTION 1.9Å

e3efxL1[L:1-102] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cholera enterotoxin subunit B, Heat-labile enterotoxin B chain ; X-RAY DIFFRACTION 1.940Å

e1s5dG1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

cholera toxin B protein (CTB) ; ligands: GAL,GOL ; X-RAY DIFFRACTION 1.75Å

e1lt4E1[E:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

HEAT-LABILE ENTEROTOXIN ; X-RAY DIFFRACTION 2.0Å

e1s5eJ1[J:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PROTEIN (CTB) ; ligands: GAL ; X-RAY DIFFRACTION 1.9Å

e1lttE1[E:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN, SUBUNIT B ; X-RAY DIFFRACTION 2.3Å

e1xtcD1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN ; X-RAY DIFFRACTION 2.4Å

e1xtcF1[F:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN ; X-RAY DIFFRACTION 2.4Å

e1jqyF1[F:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN B CHAIN ; ligands: A32 ; X-RAY DIFFRACTION 2.14Å

e1ltbD1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN, SUBUNIT B ; X-RAY DIFFRACTION 2.6Å

e1ltsE1[E:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN, SUBUNIT B ; X-RAY DIFFRACTION 1.95Å

e1g8zE1[E:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PROTEIN ; X-RAY DIFFRACTION 2.0Å

e1htlD1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN, SUBUNIT B ; X-RAY DIFFRACTION 2.5Å

e1fd7D1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN B CHAIN ; ligands: AI1 ; X-RAY DIFFRACTION 1.8Å

e1eefL1[L:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (HEAT-LABILE ENTEROTOXIN B CHAIN) ; ligands: GLA,I06 ; X-RAY DIFFRACTION 1.8Å

e1chpF1[F:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PENTAMER ; X-RAY DIFFRACTION

e1ltaD1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN, SUBUNIT B ; ligands: GAL ; X-RAY DIFFRACTION 2.2Å

e3efxM1[M:1-102] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cholera enterotoxin subunit B, Heat-labile enterotoxin B chain ; X-RAY DIFFRACTION 1.940Å

e1s5eH1[H:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PROTEIN (CTB) ; X-RAY DIFFRACTION 1.9Å

e1lt6H1[H:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN ; ligands: GAA ; X-RAY DIFFRACTION 2.2Å

e1fd7F1[F:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN B CHAIN ; ligands: AI1 ; X-RAY DIFFRACTION 1.8Å

e1ltbG1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN, SUBUNIT B ; X-RAY DIFFRACTION 2.6Å

e1fgbD1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B SUBUNIT PENTAMER ; X-RAY DIFFRACTION 2.4Å

e1rdpE1[E:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PROTEIN (CTB) ; ligands: BV3 ; X-RAY DIFFRACTION 1.35Å

e1ltsG1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN, SUBUNIT B ; X-RAY DIFFRACTION 1.95Å

e1fgbG1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B SUBUNIT PENTAMER ; X-RAY DIFFRACTION 2.4Å

e1rd9F1[F:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PROTEIN (CTB) ; ligands: BV2 ; X-RAY DIFFRACTION 1.44Å

e1jqyN1[N:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN B CHAIN ; ligands: A32 ; X-RAY DIFFRACTION 2.14Å

e3chbG1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN ; ligands: MES,UNX ; X-RAY DIFFRACTION 1.25Å

e1lt6G1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN ; ligands: GAA ; X-RAY DIFFRACTION 2.2Å

e1pzkG1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cholera Toxin B Subunit ; ligands: J12 ; X-RAY DIFFRACTION 1.35Å

e1llrF1[F:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B SUBUNIT ; ligands: FNG ; X-RAY DIFFRACTION 1.46Å

e1rd9E1[E:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PROTEIN (CTB) ; ligands: BV2 ; X-RAY DIFFRACTION 1.44Å

e1rdpH1[H:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PROTEIN (CTB) ; ligands: BV3,PGE,TRS ; X-RAY DIFFRACTION 1.35Å

e3efxJ1[J:1-102] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cholera enterotoxin subunit B, Heat-labile enterotoxin B chain ; X-RAY DIFFRACTION 1.940Å

e1ltsD1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN, SUBUNIT B ; X-RAY DIFFRACTION 1.95Å

e3efxD1[D:1-102] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cholera enterotoxin subunit B, Heat-labile enterotoxin B chain ; X-RAY DIFFRACTION 1.940Å

e1ltiE1[E:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

HEAT LABILE ENTEROTOXIN TYPE I ; ligands: GAL ; X-RAY DIFFRACTION 2.13Å

e1rf2G1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PROTEIN (CTB) ; ligands: BV4 ; X-RAY DIFFRACTION 1.35Å

e1pzkF1[F:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cholera Toxin B Subunit ; ligands: J12 ; X-RAY DIFFRACTION 1.35Å

e1pzkE1[E:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cholera Toxin B Subunit ; ligands: J12 ; X-RAY DIFFRACTION 1.35Å

e1lt3E1[E:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

HEAT-LABILE ENTEROTOXIN ; X-RAY DIFFRACTION 2.0Å

e2o2lH1[H:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Heat-labile enterotoxin B chain ; X-RAY DIFFRACTION 2.5Å

e1ltaH1[H:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN, SUBUNIT B ; ligands: GAL ; X-RAY DIFFRACTION 2.2Å

e1lt5H1[H:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN ; ligands: TDG ; X-RAY DIFFRACTION 1.7Å

e1llrG1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B SUBUNIT ; ligands: FNG ; X-RAY DIFFRACTION 1.46Å

e1fgbF1[F:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B SUBUNIT PENTAMER ; X-RAY DIFFRACTION 2.4Å

e1lt5F1[F:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN ; ligands: TDG ; X-RAY DIFFRACTION 1.7Å

e1ltgF1[F:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN ; X-RAY DIFFRACTION 2.4Å

e1ltiG1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

HEAT LABILE ENTEROTOXIN TYPE I ; ligands: GAL ; X-RAY DIFFRACTION 2.13Å

e1htlH1[H:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN, SUBUNIT B ; X-RAY DIFFRACTION 2.5Å

e1eefH1[H:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (HEAT-LABILE ENTEROTOXIN B CHAIN) ; ligands: GLA,I06 ; X-RAY DIFFRACTION 1.8Å

e1ct1D1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

CHOLERA TOXIN ; X-RAY DIFFRACTION 2.3Å

e1llrH1[H:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B SUBUNIT ; ligands: FNG ; X-RAY DIFFRACTION 1.46Å

e1ltrH1[H:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

HEAT-LABILE ENTEROTOXIN ; ligands: SO4 ; X-RAY DIFFRACTION 3.04Å

e1lt4D1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

HEAT-LABILE ENTEROTOXIN ; X-RAY DIFFRACTION 2.0Å

e1htlF1[F:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN, SUBUNIT B ; X-RAY DIFFRACTION 2.5Å

e1rcvE1[E:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PROTEIN (CTB) ; ligands: BV1 ; X-RAY DIFFRACTION 1.6Å

e1s5bD1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

cholera toxin B protein (CTB) ; X-RAY DIFFRACTION 2.13Å

e1eefE1[E:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (HEAT-LABILE ENTEROTOXIN B CHAIN) ; ligands: GLA ; X-RAY DIFFRACTION 1.8Å

e1efiH1[H:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (HEAT-LABILE ENTEROTOXIN B CHAIN) ; ligands: GAT ; X-RAY DIFFRACTION 1.6Å

e1pziF1[F:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Heat-labile Enterotoxin B subunit ; ligands: 1DM ; X-RAY DIFFRACTION 1.99Å

e1fd7M1[M:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN B CHAIN ; ligands: AI1 ; X-RAY DIFFRACTION 1.8Å

e1lt3G1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

HEAT-LABILE ENTEROTOXIN ; X-RAY DIFFRACTION 2.0Å

e1pziG1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Heat-labile Enterotoxin B subunit ; ligands: 1DM ; X-RAY DIFFRACTION 1.99Å

e1jr0H1[H:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B SUBUNIT ; ligands: A24 ; X-RAY DIFFRACTION 1.3Å

e1eefM1[M:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (HEAT-LABILE ENTEROTOXIN B CHAIN) ; ligands: GLA ; X-RAY DIFFRACTION 1.8Å

e1fd7G1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN B CHAIN ; ligands: AI1 ; X-RAY DIFFRACTION 1.8Å

e1jqyP1[P:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN B CHAIN ; ligands: A32 ; X-RAY DIFFRACTION 2.14Å

e1jqyZ1[Z:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN B CHAIN ; ligands: A32 ; X-RAY DIFFRACTION 2.14Å

e1s5fD1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PROTEIN (CTB) ; ligands: GAL ; X-RAY DIFFRACTION 2.6Å

e1s5dD1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

cholera toxin B protein (CTB) ; ligands: GAL,GOL ; X-RAY DIFFRACTION 1.75Å

e1chpH1[H:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PENTAMER ; ligands: CL ; X-RAY DIFFRACTION

e1s5fG1[G:1-102] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PROTEIN (CTB) ; ligands: GAL ; X-RAY DIFFRACTION 2.6Å

e1djrG1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN ; ligands: BEZ,GLA,GOL ; X-RAY DIFFRACTION 1.3Å

e2chbD1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

CHOLERA TOXIN ; X-RAY DIFFRACTION 2.0Å

e1md2G1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B SUBUNIT ; X-RAY DIFFRACTION 1.4Å

e1ltgD1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN ; X-RAY DIFFRACTION 2.4Å

e3efxE1[E:1-102] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cholera enterotoxin subunit B, Heat-labile enterotoxin B chain ; X-RAY DIFFRACTION 1.940Å

e1ltaE1[E:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN, SUBUNIT B ; ligands: GAL ; X-RAY DIFFRACTION 2.2Å

e1fd7L1[L:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN B CHAIN ; ligands: AI1 ; X-RAY DIFFRACTION 1.8Å

e1ct1G1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

CHOLERA TOXIN ; X-RAY DIFFRACTION 2.3Å

e1s5bG1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

cholera toxin B protein (CTB) ; X-RAY DIFFRACTION 2.13Å

e1ltiF1[F:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

HEAT LABILE ENTEROTOXIN TYPE I ; X-RAY DIFFRACTION 2.13Å

e3chbH1[H:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN ; ligands: UNX ; X-RAY DIFFRACTION 1.25Å

e1g8zH1[H:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PROTEIN ; ligands: GAL ; X-RAY DIFFRACTION 2.0Å

e1llrE1[E:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B SUBUNIT ; ligands: FNG ; X-RAY DIFFRACTION 1.46Å

e1eefD1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (HEAT-LABILE ENTEROTOXIN B CHAIN) ; ligands: GLA,I06 ; X-RAY DIFFRACTION 1.8Å

e1eeiD1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (CHOLERA TOXIN B) ; ligands: GAA ; X-RAY DIFFRACTION 2.0Å

e1rcvF1[F:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PROTEIN (CTB) ; ligands: BV1 ; X-RAY DIFFRACTION 1.6Å

e1md2D1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B SUBUNIT ; ligands: 233 ; X-RAY DIFFRACTION 1.4Å

e1md2F1[F:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B SUBUNIT ; ligands: 233 ; X-RAY DIFFRACTION 1.4Å

e1htlG1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN, SUBUNIT B ; X-RAY DIFFRACTION 2.5Å

e1eefO1[O:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (HEAT-LABILE ENTEROTOXIN B CHAIN) ; ligands: GLA,I06 ; X-RAY DIFFRACTION 1.8Å

e1s5eK1[K:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PROTEIN (CTB) ; X-RAY DIFFRACTION 1.9Å

e1s5cF1[F:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

cholera enterotoxin B-subunit ; X-RAY DIFFRACTION 2.50Å

e1s5eL1[L:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PROTEIN (CTB) ; X-RAY DIFFRACTION 1.9Å

e1lt4G1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

HEAT-LABILE ENTEROTOXIN ; X-RAY DIFFRACTION 2.0Å

e2o2lM1[M:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Heat-labile enterotoxin B chain ; X-RAY DIFFRACTION 2.5Å

e1pziH1[H:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Heat-labile Enterotoxin B subunit ; ligands: 1DM ; X-RAY DIFFRACTION 1.99Å

e1lt6N1[N:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN ; ligands: GAA ; X-RAY DIFFRACTION 2.2Å

e1eefG1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (HEAT-LABILE ENTEROTOXIN B CHAIN) ; ligands: GLA,I06 ; X-RAY DIFFRACTION 1.8Å

e1eefF1[F:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (HEAT-LABILE ENTEROTOXIN B CHAIN) ; ligands: GLA ; X-RAY DIFFRACTION 1.8Å

e1rcvD1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PROTEIN (CTB) ; ligands: BV1 ; X-RAY DIFFRACTION 1.6Å

e1chqG1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PENTAMER ; X-RAY DIFFRACTION

e1s5cD1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

cholera enterotoxin B-subunit ; X-RAY DIFFRACTION 2.50Å

e1djrH1[H:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN ; ligands: BEZ,GLA,GOL ; X-RAY DIFFRACTION 1.3Å

e1b44G1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

PROTEIN (B-POL SUBUNIT OF HEAT-LABILE ENTEROTOXIN) ; X-RAY DIFFRACTION 3.3Å

e1lttD1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN, SUBUNIT B ; X-RAY DIFFRACTION 2.3Å

e1rdpG1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PROTEIN (CTB) ; ligands: BV3 ; X-RAY DIFFRACTION 1.35Å

e1b44F1[F:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

PROTEIN (B-POL SUBUNIT OF HEAT-LABILE ENTEROTOXIN) ; X-RAY DIFFRACTION 3.3Å

e1lt4F1[F:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

HEAT-LABILE ENTEROTOXIN ; X-RAY DIFFRACTION 2.0Å

e1s5eD1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PROTEIN (CTB) ; ligands: GAL ; X-RAY DIFFRACTION 1.9Å

e1lt6O1[O:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN ; ligands: GAA ; X-RAY DIFFRACTION 2.2Å

e2o2lI1[I:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Heat-labile enterotoxin B chain ; X-RAY DIFFRACTION 2.5Å

e1ltrE1[E:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

HEAT-LABILE ENTEROTOXIN ; ligands: SO4 ; X-RAY DIFFRACTION 3.04Å

e1lt3F1[F:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

HEAT-LABILE ENTEROTOXIN ; X-RAY DIFFRACTION 2.0Å

e1ltbE1[E:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN, SUBUNIT B ; X-RAY DIFFRACTION 2.6Å

e1ltiH1[H:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

HEAT LABILE ENTEROTOXIN TYPE I ; ligands: GAL ; X-RAY DIFFRACTION 2.13Å

e1rf2E1[E:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PROTEIN (CTB) ; ligands: BV4 ; X-RAY DIFFRACTION 1.35Å

e1ltgG1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN ; X-RAY DIFFRACTION 2.4Å

e3chbE1[E:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN ; ligands: UNX ; X-RAY DIFFRACTION 1.25Å

e1rd9G1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PROTEIN (CTB) ; ligands: BV2 ; X-RAY DIFFRACTION 1.44Å

e1pzjD1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cholera Toxin B Subunit ; ligands: 15B ; X-RAY DIFFRACTION 1.46Å

e1efiF1[F:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (HEAT-LABILE ENTEROTOXIN B CHAIN) ; ligands: GAT ; X-RAY DIFFRACTION 1.6Å

e1chqH1[H:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PENTAMER ; X-RAY DIFFRACTION

e1s5dF1[F:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

cholera toxin B protein (CTB) ; ligands: GAL,GOL ; X-RAY DIFFRACTION 1.75Å

e1eefP1[P:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (HEAT-LABILE ENTEROTOXIN B CHAIN) ; ligands: GLA,I06 ; X-RAY DIFFRACTION 1.8Å

e1rf2F1[F:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PROTEIN (CTB) ; ligands: BV4 ; X-RAY DIFFRACTION 1.35Å

e3efxI1[I:1-102] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cholera enterotoxin subunit B, Heat-labile enterotoxin B chain ; X-RAY DIFFRACTION 1.940Å

e1eeiG1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (CHOLERA TOXIN B) ; ligands: GAA ; X-RAY DIFFRACTION 2.0Å

e1eefN1[N:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (HEAT-LABILE ENTEROTOXIN B CHAIN) ; ligands: GLA ; X-RAY DIFFRACTION 1.8Å

e1chqE1[E:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PENTAMER ; X-RAY DIFFRACTION

e1jr0F1[F:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B SUBUNIT ; ligands: A24 ; X-RAY DIFFRACTION 1.3Å

e1rcvH1[H:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PROTEIN (CTB) ; ligands: BV1 ; X-RAY DIFFRACTION 1.6Å

e3efxK1[K:1-102] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cholera enterotoxin subunit B, Heat-labile enterotoxin B chain ; X-RAY DIFFRACTION 1.940Å

e1fd7O1[O:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN B CHAIN ; ligands: AI1 ; X-RAY DIFFRACTION 1.8Å

e1jr0G1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B SUBUNIT ; ligands: A24 ; X-RAY DIFFRACTION 1.3Å

e1djrE1[E:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN ; ligands: GLA ; X-RAY DIFFRACTION 1.3Å

e1lt6L1[L:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN ; ligands: GAA ; X-RAY DIFFRACTION 2.2Å

e2o2lK1[K:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Heat-labile enterotoxin B chain ; X-RAY DIFFRACTION 2.5Å

e1jqyG1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN B CHAIN ; ligands: A32 ; X-RAY DIFFRACTION 2.14Å

e1ltsF1[F:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN, SUBUNIT B ; X-RAY DIFFRACTION 1.95Å

e1s5bE1[E:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

cholera toxin B protein (CTB) ; X-RAY DIFFRACTION 2.13Å

e1ltrG1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

HEAT-LABILE ENTEROTOXIN ; ligands: SO4 ; X-RAY DIFFRACTION 3.04Å

e1eeiH1[H:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (CHOLERA TOXIN B) ; ligands: GAA ; X-RAY DIFFRACTION 2.0Å

e2o2lF1[F:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Heat-labile enterotoxin B chain ; X-RAY DIFFRACTION 2.5Å

e1jqyW1[W:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN B CHAIN ; ligands: A32 ; X-RAY DIFFRACTION 2.14Å

e1fd7N1[N:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN B CHAIN ; ligands: AI1 ; X-RAY DIFFRACTION 1.8Å

e1jqyD1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN B CHAIN ; ligands: A32 ; X-RAY DIFFRACTION 2.14Å

e1ltrD1[D:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

HEAT-LABILE ENTEROTOXIN ; ligands: SO4 ; X-RAY DIFFRACTION 3.04Å

e1htlE1[E:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN, SUBUNIT B ; X-RAY DIFFRACTION 2.5Å

e2o2lL1[L:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Heat-labile enterotoxin B chain ; X-RAY DIFFRACTION 2.5Å

e1s5cE1[E:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

cholera enterotoxin B-subunit ; X-RAY DIFFRACTION 2.50Å

e1jqyV1[V:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN B CHAIN ; ligands: A32 ; X-RAY DIFFRACTION 2.14Å

e1lt3H1[H:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

HEAT-LABILE ENTEROTOXIN ; X-RAY DIFFRACTION 2.0Å

e1fgbE1[E:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B SUBUNIT PENTAMER ; X-RAY DIFFRACTION 2.4Å

e1jqyX1[X:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN B CHAIN ; ligands: A32 ; X-RAY DIFFRACTION 2.14Å

e2chbF1[F:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

CHOLERA TOXIN ; X-RAY DIFFRACTION 2.0Å

e1lt6E1[E:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN ; ligands: GAA ; X-RAY DIFFRACTION 2.2Å

e1lttH1[H:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN, SUBUNIT B ; X-RAY DIFFRACTION 2.3Å

e1s5cH1[H:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

cholera enterotoxin B-subunit ; X-RAY DIFFRACTION 2.50Å

e1rcvG1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN B PROTEIN (CTB) ; ligands: BV1 ; X-RAY DIFFRACTION 1.6Å

e1lt6F1[F:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HEAT-LABILE ENTEROTOXIN ; ligands: GAA ; X-RAY DIFFRACTION 2.2Å

e1efiG1[G:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (HEAT-LABILE ENTEROTOXIN B CHAIN) ; ligands: GAT ; X-RAY DIFFRACTION 1.6Å

e3chbF1[F:1-103] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CHOLERA TOXIN ; ligands: UNX ; X-RAY DIFFRACTION 1.25Å

Next
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.

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