Evolutionary classification of protein domain structures
alpha arraysalpha-helix arrays with mainly perpendicular helices
alpha bundlesalpha-helix bundles with mainly parallel helices
Representatives:
e2hs5A2[A:94-231] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH
PUTATIVE TRANSCRIPTIONAL REGULATOR GNTR ; ligands: ACT ; X-RAY DIFFRACTION 2.2Å
e3sxyA2[A:76-210] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcriptional regulator, GntR family ; X-RAY DIFFRACTION 1.70Å
e2di3A2[A:80-232] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Bacterial regulatory proteins, GntR family ; ligands: ZN ; X-RAY DIFFRACTION 2.05Å
e3fmsA1[A:76-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcriptional regulator, GntR family ; ligands: ACT,NI ; X-RAY DIFFRACTION 2.20Å
e2di3B2[B:80-231] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Bacterial regulatory proteins, GntR family ; ligands: ZN ; X-RAY DIFFRACTION 2.05Å
e3ihuB2[B:82-218] Image Pymol Jmol Links: PDB, SCOP, CATH
Transcriptional regulator, GntR family ; ligands: CL,GOL ; X-RAY DIFFRACTION 1.92Å
e3sxyB2[B:76-210] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcriptional regulator, GntR family ; X-RAY DIFFRACTION 1.70Å
e3sxzA1[A:72-211] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcriptional regulator, GntR family ; X-RAY DIFFRACTION 2.320Å
e3sxzB1[B:72-211] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcriptional regulator, GntR family ; X-RAY DIFFRACTION 2.320Å
e3sxkA1[A:72-211] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcriptional regulator, GntR family ; ligands: BCT,SO4,ZN ; X-RAY DIFFRACTION 1.630Å
e3sxkB1[B:72-211] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcriptional regulator, GntR family ; ligands: BCT,SO4,ZN ; X-RAY DIFFRACTION 1.630Å
e3sxmA1[A:72-211] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcriptional regulator, GntR family ; ligands: BCT ; X-RAY DIFFRACTION 1.550Å
e3sxmB1[B:72-211] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcriptional regulator, GntR family ; ligands: BCT ; X-RAY DIFFRACTION 1.550Å
e3ihuA1[A:82-219] Image Pymol Jmol Links: PDB, SCOP, CATH
Transcriptional regulator, GntR family ; ligands: GOL ; X-RAY DIFFRACTION 1.92Å
e3c7jA2[A:75-234] Image Pymol Jmol Links: PDB, SCOP, CATH
TRANSCRIPTIONAL REGULATOR, GNTR FAMILY ; ligands: NI ; X-RAY DIFFRACTION 2.1Å
e3c7jB2[B:90-229] Image Pymol Jmol Links: PDB, SCOP, CATH
TRANSCRIPTIONAL REGULATOR, GNTR FAMILY ; ligands: NI ; X-RAY DIFFRACTION 2.1Å
e4p9fA2[A:79-220] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
HTH-type transcriptional regulator mcbR ; X-RAY DIFFRACTION 2.099Å
e4p9fB1[B:75-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
HTH-type transcriptional regulator mcbR ; X-RAY DIFFRACTION 2.099Å
e5tpmA1[A:-2-250] Image Pymol Jmol Links: PDB, SCOP, CATH
Pyruvate dehydrogenase complex repressor ; X-RAY DIFFRACTION 2.8Å
e5tpmB1[B:-2-236] Image Pymol Jmol Links: PDB, SCOP, CATH
Pyruvate dehydrogenase complex repressor ; X-RAY DIFFRACTION 2.8Å
e5tpmC1[C:-2-247] Image Pymol Jmol Links: PDB, SCOP, CATH
Pyruvate dehydrogenase complex repressor ; X-RAY DIFFRACTION 2.8Å
e5tpmD1[D:-2-235] Image Pymol Jmol Links: PDB, SCOP, CATH
Pyruvate dehydrogenase complex repressor ; X-RAY DIFFRACTION 2.8Å
e6az6A2[A:76-220] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
GntR family transcriptional regulator ; X-RAY DIFFRACTION 1.909Å
e6az6B1[B:76-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
GntR family transcriptional regulator ; X-RAY DIFFRACTION 1.909Å
e6ep3B2[B:82-220] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Lmo0651 protein ; ligands: EDO,SO4 ; X-RAY DIFFRACTION 2.2Å
e6ep3A1[A:82-217] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Lmo0651 protein ; ligands: EDO,EPE,SO4 ; X-RAY DIFFRACTION 2.2Å
e6on4A1[A:98-246] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
HTH-type transcriptional repressor NanR ; ligands: P4K,SLB,ZN ; X-RAY DIFFRACTION 2.100Å
e6on4B2[B:98-244] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
HTH-type transcriptional repressor NanR ; ligands: P4K ; X-RAY DIFFRACTION 2.100Å
e6z74A2[A:74-244] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcriptional regulator, GntR family ; ligands: CIT,EDO,GOL,ZN ; X-RAY DIFFRACTION 2Å
e6z74B2[B:74-245] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcriptional regulator, GntR family ; ligands: CIT,EDO,SO4,ZN ; X-RAY DIFFRACTION 2Å
e6z74C2[C:74-242] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcriptional regulator, GntR family ; ligands: CIT,EDO,PEG,ZN ; X-RAY DIFFRACTION 2Å
e6z74D2[D:74-244] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcriptional regulator, GntR family ; ligands: CIT,EDO,ZN ; X-RAY DIFFRACTION 2Å
e6za0A2[A:75-248] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcriptional regulator, GntR family ; ligands: CIT,EDO,ZN ; X-RAY DIFFRACTION 1.65Å
e6za0B2[B:74-243] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcriptional regulator, GntR family ; ligands: CIT,PEG,ZN ; X-RAY DIFFRACTION 1.65Å
e6za3A2[A:74-244] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcriptional regulator, GntR family ; ligands: EDO,ZN ; X-RAY DIFFRACTION 2Å
e6za3B2[B:74-244] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcriptional regulator, GntR family ; ligands: CL,EDO,ZN ; X-RAY DIFFRACTION 2Å
e6za7A2[A:75-244] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcriptional regulator, GntR family ; ligands: GOL,PEG,ZN ; X-RAY DIFFRACTION 2.34Å
e6za7B2[B:74-244] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcriptional regulator, GntR family ; ligands: GOL,PEG,ZN ; X-RAY DIFFRACTION 2.34Å
e6za7C2[C:74-246] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcriptional regulator, GntR family ; ligands: GOL,PEG,SO4,ZN ; X-RAY DIFFRACTION 2.34Å
e6za7D2[D:74-243] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcriptional regulator, GntR family ; ligands: GOL,ZN ; X-RAY DIFFRACTION 2.34Å
e6zabA2[A:74-244] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Transcriptional regulator, GntR family ; ligands: CIT,ZN ; X-RAY DIFFRACTION 2.8Å
e7c7eA1[A:79-224] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Putative DNA-binding transcriptional regulator ; ligands: PGE,SO4,ZN ; X-RAY DIFFRACTION 2.04Å
e6wfqC1[C:98-248] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
HTH-type transcriptional repressor NanR ; ELECTRON MICROSCOPY
e6wfqD1[D:98-248] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
HTH-type transcriptional repressor NanR ; ELECTRON MICROSCOPY
e6wg7C2[C:98-248] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
HTH-type transcriptional repressor NanR ; ELECTRON MICROSCOPY
e6wg7D2[D:98-248] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
HTH-type transcriptional repressor NanR ; ELECTRON MICROSCOPY
e6wg7E1[E:98-248] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
HTH-type transcriptional repressor NanR ; ELECTRON MICROSCOPY
e6wg7G2[G:98-248] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
HTH-type transcriptional repressor NanR ; ELECTRON MICROSCOPY
e6wg7F2[F:98-248] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
HTH-type transcriptional repressor NanR ; ELECTRON MICROSCOPY
e6wg7H1[H:98-248] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
HTH-type transcriptional repressor NanR ; ELECTRON MICROSCOPY
e7u5qA2[A:111-257] Image Pymol Jmol Links: PDB, SCOP, CATH
Transcriptional regulator, GntR family protein ; ligands: ZN ; X-RAY DIFFRACTION 3.000Å
e7u5qB1[B:111-257] Image Pymol Jmol Links: PDB, SCOP, CATH
Transcriptional regulator, GntR family protein ; ligands: BR,ZN ; X-RAY DIFFRACTION 3.000Å
e7xp0A1[A:85-226] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Probable transcriptional regulator ; ligands: SO4,ZN ; X-RAY DIFFRACTION 2.600Å
e7xp1A2[A:85-226] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Probable transcriptional regulator ; ligands: GOL,MIC,SO4,ZN ; X-RAY DIFFRACTION 2.500Å
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