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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

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

X: Flavodoxin-like
H: Class I glutamine amidotransferase-like
T: Periplasmic binding protein-like I
F: Peripla_BP_3

PF13377 CL0144

Representatives:

e1jyeA2[A:162-291] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Lactose Operon Repressor ; ligands: GOL ; X-RAY DIFFRACTION 1.7Å

e3edcA1[A:161-291] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LACTOSE OPERON REPRESSOR ; ligands: HEZ ; X-RAY DIFFRACTION 2.1Å

e1dbqA2[A:162-292] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PURINE REPRESSOR ; X-RAY DIFFRACTION 2.2Å

e3jy6B2[B:165-295] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcriptional regulator, LacI family ; X-RAY DIFFRACTION 1.970Å

e4fe4A1[A:102-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Xylose operon regulatory protein ; X-RAY DIFFRACTION 3.4Å

e4fe4B1[B:102-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Xylose operon regulatory protein ; X-RAY DIFFRACTION 3.4Å

e3jy6A2[A:165-294] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcriptional regulator, LacI family ; X-RAY DIFFRACTION 1.970Å

e4fe4C1[C:102-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Xylose operon regulatory protein ; X-RAY DIFFRACTION 3.4Å

e3jy6D1[D:165-294] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcriptional regulator, LacI family ; ligands: CL,EDO ; X-RAY DIFFRACTION 1.970Å

e3o75A2[A:162-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FRUCTOSE TRANSPORT SYSTEM REPRESSOR FRUR ; ligands: F1X ; X-RAY DIFFRACTION 2.3Å

e4fe7A1[A:102-281] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Xylose operon regulatory protein ; ligands: XYS ; X-RAY DIFFRACTION 2.90Å

e3o75B2[B:162-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FRUCTOSE TRANSPORT SYSTEM REPRESSOR FRUR ; ligands: F1X ; X-RAY DIFFRACTION 2.3Å

e3h5tA3[A:171-319] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcriptional regulator, LacI family ; X-RAY DIFFRACTION 2.53Å

e3edcB3[B:161-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LACTOSE OPERON REPRESSOR ; ligands: HEZ ; X-RAY DIFFRACTION 2.1Å

e5ix8A2[A:164-288] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative sugar ABC transport system, substrate-binding protein ; ligands: EDO,SO4 ; X-RAY DIFFRACTION 1.460Å

e5ix8B2[B:164-288] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative sugar ABC transport system, substrate-binding protein ; ligands: EDO,SO4 ; X-RAY DIFFRACTION 1.460Å

e3edcD3[D:161-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LACTOSE OPERON REPRESSOR ; ligands: HEZ ; X-RAY DIFFRACTION 2.1Å

e3edcC3[C:161-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LACTOSE OPERON REPRESSOR ; ligands: HEZ ; X-RAY DIFFRACTION 2.1Å

e3o74A2[A:162-285] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FRUCTOSE TRANSPORT SYSTEM REPRESSOR FRUR ; ligands: GOL ; X-RAY DIFFRACTION 2.0Å

e1jhzA2[A:162-286] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PURINE NUCLEOTIDE SYNTHESIS REPRESSOR ; X-RAY DIFFRACTION 2.4Å

e3o74B2[B:162-285] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FRUCTOSE TRANSPORT SYSTEM REPRESSOR FRUR ; ligands: GOL ; X-RAY DIFFRACTION 2.0Å

e1dbqB2[B:162-286] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PURINE REPRESSOR ; X-RAY DIFFRACTION 2.2Å

e7ce1S2[S:179-285] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LacI-type transcription factor ; X-RAY DIFFRACTION 3.2Å

e7x7hA2[A:162-284] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Catabolite repressor/activator ; X-RAY DIFFRACTION 2.00Å

e1jhzB2[B:162-286] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PURINE NUCLEOTIDE SYNTHESIS REPRESSOR ; X-RAY DIFFRACTION 2.4Å

e7x7hC1[C:162-284] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Catabolite repressor/activator ; X-RAY DIFFRACTION 2.00Å

e1jftA3[A:160-341] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PURINE NUCLEOTIDE SYNTHESIS REPRESSOR ; ligands: HPA,PO4 ; X-RAY DIFFRACTION 2.5Å

e1sxgD2[D:160-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glucose-resistance amylase regulator ; X-RAY DIFFRACTION 2.71Å

e1sxgI2[I:160-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glucose-resistance amylase regulator ; X-RAY DIFFRACTION 2.71Å

e1sxiT2[T:160-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GLUCOSE-RESISTANCE AMYLASE REGULATOR ; ligands: MG ; X-RAY DIFFRACTION 3.0Å

e1sxgP2[P:160-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glucose-resistance amylase regulator ; X-RAY DIFFRACTION 2.71Å

e1sxhD2[D:160-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glucose-resistance amylase regulator ; X-RAY DIFFRACTION 2.75Å

e1sxgA2[A:160-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glucose-resistance amylase regulator ; X-RAY DIFFRACTION 2.71Å

e1jwlC2[C:162-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LACTOSE OPERON REPRESSOR ; ligands: NPF ; X-RAY DIFFRACTION 4.0Å

e1sxgB2[B:160-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glucose-resistance amylase regulator ; X-RAY DIFFRACTION 2.71Å

e1sxiR2[R:160-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GLUCOSE-RESISTANCE AMYLASE REGULATOR ; X-RAY DIFFRACTION 3.0Å

e1sxiI2[I:160-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GLUCOSE-RESISTANCE AMYLASE REGULATOR ; X-RAY DIFFRACTION 3.0Å

e1sxgF2[F:160-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glucose-resistance amylase regulator ; X-RAY DIFFRACTION 2.71Å

e2p9hA2[A:162-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LACTOSE OPERON REPRESSOR ; ligands: IPT ; X-RAY DIFFRACTION 2.0Å

e1lbhA2[A:161-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

INTACT LACTOSE OPERON REPRESSOR WITH GRATUITOUS INDUCER IPTG ; ligands: IPT ; X-RAY DIFFRACTION

e1tlfB2[B:161-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

LAC REPRESSOR ; ligands: EMC,IPT ; X-RAY DIFFRACTION 2.6Å

e1sxiD2[D:160-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GLUCOSE-RESISTANCE AMYLASE REGULATOR ; ligands: MG ; X-RAY DIFFRACTION 3.0Å

e2hsgA3[A:160-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GLUCOSE-RESISTANCE AMYLASE REGULATOR ; X-RAY DIFFRACTION 2.5Å

e3k4hA2[A:114-245] Image Pymol Jmol Links: PDB, SCOP, CATH

putative transcriptional regulator ; ligands: MAL ; X-RAY DIFFRACTION 2.700Å

e2p9hB2[B:162-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LACTOSE OPERON REPRESSOR ; ligands: IPT ; X-RAY DIFFRACTION 2.0Å

e1jyfA2[A:162-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Lactose Operon Repressor ; ligands: GOL ; X-RAY DIFFRACTION 3.0Å

e1lbhC2[C:161-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

INTACT LACTOSE OPERON REPRESSOR WITH GRATUITOUS INDUCER IPTG ; ligands: IPT ; X-RAY DIFFRACTION

e1sxhA2[A:160-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glucose-resistance amylase regulator ; X-RAY DIFFRACTION 2.75Å

e1lbiC2[C:161-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

LAC REPRESSOR ; X-RAY DIFFRACTION

e1sxiK2[K:160-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GLUCOSE-RESISTANCE AMYLASE REGULATOR ; X-RAY DIFFRACTION 3.0Å

e1sxiM2[M:160-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GLUCOSE-RESISTANCE AMYLASE REGULATOR ; X-RAY DIFFRACTION 3.0Å

e1tlfA2[A:161-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

LAC REPRESSOR ; ligands: EMC,IPT ; X-RAY DIFFRACTION 2.6Å

e1lbiA2[A:161-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

LAC REPRESSOR ; X-RAY DIFFRACTION

e1tlfC2[C:161-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

LAC REPRESSOR ; ligands: EMC,IPT ; X-RAY DIFFRACTION 2.6Å

e2nzvG2[G:160-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CATABOLITE CONTROL PROTEIN ; ligands: FBP,SO4 ; X-RAY DIFFRACTION 3.0Å

e1sxiL2[L:160-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GLUCOSE-RESISTANCE AMYLASE REGULATOR ; X-RAY DIFFRACTION 3.0Å

e1sxiW2[W:160-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GLUCOSE-RESISTANCE AMYLASE REGULATOR ; X-RAY DIFFRACTION 3.0Å

e2pafB2[B:162-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Lactose operon repressor ; ligands: NPF ; X-RAY DIFFRACTION 3.5Å

e2pafA2[A:162-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Lactose operon repressor ; ligands: NPF ; X-RAY DIFFRACTION 3.5Å

e1lbiD2[D:161-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

LAC REPRESSOR ; X-RAY DIFFRACTION

e1lbhD2[D:161-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

INTACT LACTOSE OPERON REPRESSOR WITH GRATUITOUS INDUCER IPTG ; ligands: IPT ; X-RAY DIFFRACTION

e1tlfD2[D:161-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

LAC REPRESSOR ; ligands: EMC,IPT ; X-RAY DIFFRACTION 2.6Å

e1rzrG3[G:160-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GLUCOSE-RESISTANCE AMYLASE REGULATOR ; ligands: SO4 ; X-RAY DIFFRACTION 2.8Å

e1sxiG2[G:160-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GLUCOSE-RESISTANCE AMYLASE REGULATOR ; X-RAY DIFFRACTION 3.0Å

e1lbhB2[B:161-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

INTACT LACTOSE OPERON REPRESSOR WITH GRATUITOUS INDUCER IPTG ; ligands: IPT ; X-RAY DIFFRACTION

e1zvvG3[G:160-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glucose-resistance amylase regulator ; ligands: IOD ; X-RAY DIFFRACTION 2.98Å

e1sxiB2[B:160-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GLUCOSE-RESISTANCE AMYLASE REGULATOR ; X-RAY DIFFRACTION 3.0Å

e1zvvB3[B:160-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glucose-resistance amylase regulator ; ligands: IOD ; X-RAY DIFFRACTION 2.98Å

e1lbiB2[B:161-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

LAC REPRESSOR ; X-RAY DIFFRACTION

e1sxiA2[A:160-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GLUCOSE-RESISTANCE AMYLASE REGULATOR ; X-RAY DIFFRACTION 3.0Å

e1zvvA3[A:160-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Glucose-resistance amylase regulator ; X-RAY DIFFRACTION 2.98Å

e1sxiN2[N:160-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GLUCOSE-RESISTANCE AMYLASE REGULATOR ; X-RAY DIFFRACTION 3.0Å

e1rzrC3[C:160-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GLUCOSE-RESISTANCE AMYLASE REGULATOR ; X-RAY DIFFRACTION 2.8Å

e1rzrD3[D:160-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GLUCOSE-RESISTANCE AMYLASE REGULATOR ; X-RAY DIFFRACTION 2.8Å

e2oenG2[G:160-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CATABOLITE CONTROL PROTEIN ; X-RAY DIFFRACTION 3.17Å

e3h5oA2[A:169-300] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcriptional regulator GntR ; X-RAY DIFFRACTION 2.3Å

e3mizA2[A:160-297] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative transcriptional regulator protein, LacI family ; X-RAY DIFFRACTION 1.91Å

e4kmrA2[A:167-301] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcriptional regulator, LacI family ; X-RAY DIFFRACTION 1.45Å

e3cs3A2[A:151-279] Image Pymol Jmol Links: PDB, SCOP, CATH

Sugar-binding transcriptional regulator, LacI family ; ligands: GOL ; X-RAY DIFFRACTION 2.35Å

e1bykB3[B:159-282] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB

; ligands: T6P

e3gv0A2[A:168-299] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcriptional regulator, LacI family ; X-RAY DIFFRACTION 2.35Å

e2qu7A2[A:161-296] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative transcriptional regulator ; ligands: CL ; X-RAY DIFFRACTION 2.300Å

e2qu7B2[B:161-296] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative transcriptional regulator ; ligands: CL ; X-RAY DIFFRACTION 2.300Å

e1qpzA3[A:160-340] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (PURINE NUCLEOTIDE SYNTHESIS REPRESSOR) ; ligands: HPA ; X-RAY DIFFRACTION 2.5Å

e1bdhA3[A:160-340] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

PROTEIN (PURINE REPRESSOR) ; ligands: HPA ; X-RAY DIFFRACTION

e1qqbA3[A:160-340] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PURINE NUCLEOTIDE SYNTHESIS REPRESSOR ; ligands: HPA ; X-RAY DIFFRACTION 2.7Å

e2pugA3[A:160-340] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (PURINE REPRESSOR) ; ligands: HPA ; X-RAY DIFFRACTION 2.700Å

e2pudA3[A:161-340] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

PROTEIN (PURINE REPRESSOR) ; ligands: HPA ; X-RAY DIFFRACTION 2.600Å

e2pubA3[A:161-340] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

PURINE REPRESSOR ; ligands: ADE ; X-RAY DIFFRACTION 2.700Å

e1qp4A3[A:160-340] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (PURINE NUCLEOTIDE SYNTHESIS REPRESSOR) ; ligands: HPA ; X-RAY DIFFRACTION 3.0Å

e1vpwA3[A:160-340] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PURINE REPRESSOR ; ligands: HPA ; X-RAY DIFFRACTION 2.700Å

e2pucA3[A:161-340] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

PROTEIN (PURINE REPRESSOR) ; ligands: GUN ; X-RAY DIFFRACTION 2.600Å

e1qqaA3[A:160-340] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (PURINE NUCLEOTIDE SYNTHESIS REPRESSOR) ; ligands: HPA ; X-RAY DIFFRACTION 3.00Å

e2pueA3[A:160-340] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (PURINE REPRESSOR ) ; ligands: ADE ; X-RAY DIFFRACTION 2.700Å

e1bdiA3[A:160-340] Image Pymol Jmol Links: PDB, SCOP, CATH

PROTEIN (PURINE REPRESSOR) ; ligands: HPA ; X-RAY DIFFRACTION 3.0Å

e2puaA3[A:160-340] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

PURINE REPRESSOR ; ligands: 6MP ; X-RAY DIFFRACTION 2.900Å

e1qp0A3[A:160-340] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (PURINE NUCLEOTIDE SYNTHESIS REPRESSOR) ; ligands: HPA ; X-RAY DIFFRACTION 2.9Å

e1zayA3[A:160-340] Image Pymol Jmol Links: PDB, SCOP, CATH

PROTEIN (PURINE REPRESSOR) ; ligands: HPA ; X-RAY DIFFRACTION 2.7Å

e1pnrA3[A:160-340] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

PROTEIN (PURINE REPRESSOR) ; ligands: HPA ; X-RAY DIFFRACTION

e1wetA3[A:160-340] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (PURINE REPRESSOR) ; ligands: GUN ; X-RAY DIFFRACTION 2.500Å

e1qp7A3[A:160-340] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (PURINE NUCLEOTIDE SYNTHESIS REPRESSOR) ; ligands: HPA ; X-RAY DIFFRACTION 2.9Å

e1jfsA3[A:160-340] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PURINE NUCLEOTIDE SYNTHESIS REPRESSOR ; ligands: HPA ; X-RAY DIFFRACTION 2.9Å

e2pufA3[A:160-340] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (PURINE REPRESSOR) ; ligands: GUN ; X-RAY DIFFRACTION 3.000Å

e1jh9A3[A:160-340] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PURINE NUCLEOTIDE SYNTHESIS REPRESSOR ; ligands: HPA,PO4 ; X-RAY DIFFRACTION 2.55Å

e2fepA2[A:161-293] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CATABOLITE CONTROL PROTEIN A ; ligands: SO4 ; X-RAY DIFFRACTION 2.45Å

e3brqB2[B:120-251] Image Pymol Jmol Links: PDB, SCOP, CATH

HTH-TYPE TRANSCRIPTIONAL REGULATOR ASCG ; ligands: NA,SO4 ; X-RAY DIFFRACTION 2.0Å

e3oqmA3[A:161-293] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CATABOLITE CONTROL PROTEIN A ; X-RAY DIFFRACTION 2.96Å

e2jcgA3[A:160-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GLUCOSE-RESISTANCE AMYLASE REGULATOR ; ligands: CA ; X-RAY DIFFRACTION 2.600Å

e1efaC2[C:160-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LAC REPRESSOR ; ligands: NPF ; X-RAY DIFFRACTION 2.6Å

e3brqA2[A:120-251] Image Pymol Jmol Links: PDB, SCOP, CATH

HTH-TYPE TRANSCRIPTIONAL REGULATOR ASCG ; ligands: FRU,SO4 ; X-RAY DIFFRACTION 2.0Å

e3kkeC2[C:160-294] Image Pymol Jmol Links: PDB, SCOP, CATH

LacI family Transcriptional regulator ; ligands: ACT ; X-RAY DIFFRACTION 2.200Å

e3oqnA3[A:161-293] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CATABOLITE CONTROL PROTEIN A ; X-RAY DIFFRACTION 3.3Å

e3kkeA2[A:160-296] Image Pymol Jmol Links: PDB, SCOP, CATH

LacI family Transcriptional regulator ; ligands: ACT ; X-RAY DIFFRACTION 2.200Å

e3oqoA3[A:161-293] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CATABOLITE CONTROL PROTEIN A ; X-RAY DIFFRACTION 2.97Å

e3oqmC3[C:161-293] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CATABOLITE CONTROL PROTEIN A ; X-RAY DIFFRACTION 2.96Å

e3kkeB2[B:160-294] Image Pymol Jmol Links: PDB, SCOP, CATH

LacI family Transcriptional regulator ; ligands: ACT ; X-RAY DIFFRACTION 2.200Å

e3oqnC3[C:161-293] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CATABOLITE CONTROL PROTEIN A ; X-RAY DIFFRACTION 3.3Å

e3oqoC3[C:161-293] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CATABOLITE CONTROL PROTEIN A ; X-RAY DIFFRACTION 2.97Å

e3k4hB2[B:114-245] Image Pymol Jmol Links: PDB, SCOP, CATH

putative transcriptional regulator ; ligands: MAL ; X-RAY DIFFRACTION 2.700Å

e3kkeD2[D:160-296] Image Pymol Jmol Links: PDB, SCOP, CATH

LacI family Transcriptional regulator ; ligands: ACT ; X-RAY DIFFRACTION 2.200Å

e1rzrA3[A:160-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GLUCOSE-RESISTANCE AMYLASE REGULATOR ; X-RAY DIFFRACTION 2.8Å

e3c3kB2[B:107-237] Image Pymol Jmol Links: PDB, SCOP, CATH

Alanine racemase ; ligands: CL,GOL ; X-RAY DIFFRACTION 1.990Å

e4kmrB2[B:167-301] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcriptional regulator, LacI family ; ligands: NA ; X-RAY DIFFRACTION 1.45Å

e3h5oB2[B:169-300] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcriptional regulator GntR ; X-RAY DIFFRACTION 2.3Å

e3k9cB2[B:167-297] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcriptional regulator, LacI family protein ; ligands: GOL ; X-RAY DIFFRACTION 2.07Å

e3k9cA2[A:167-297] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcriptional regulator, LacI family protein ; ligands: GOL ; X-RAY DIFFRACTION 2.07Å

e3mizB2[B:160-297] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative transcriptional regulator protein, LacI family ; X-RAY DIFFRACTION 1.91Å

e3gybA2[A:159-287] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcriptional regulators (LACI-FAMILY TRANSCRIPTIONAL REGULATORY PROTEIN) ; ligands: MG ; X-RAY DIFFRACTION 1.60Å

e3d8uA2[A:169-299] Image Pymol Jmol Links: PDB, SCOP, CATH

PURR TRANSCRIPTIONAL REGULATOR ; X-RAY DIFFRACTION 2.88Å

e3c3kA2[A:107-237] Image Pymol Jmol Links: PDB, SCOP, CATH

Alanine racemase ; ligands: GOL ; X-RAY DIFFRACTION 1.990Å

e2o20E2[E:163-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Catabolite control protein A ; ligands: SO4 ; X-RAY DIFFRACTION 1.900Å

e2o20A2[A:163-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Catabolite control protein A ; ligands: SO4 ; X-RAY DIFFRACTION 1.900Å

e2o20D2[D:163-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Catabolite control protein A ; X-RAY DIFFRACTION 1.900Å

e2o20B2[B:163-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Catabolite control protein A ; ligands: SO4 ; X-RAY DIFFRACTION 1.900Å

e2o20F2[F:163-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Catabolite control protein A ; ligands: SO4 ; X-RAY DIFFRACTION 1.900Å

e2o20G2[G:163-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Catabolite control protein A ; X-RAY DIFFRACTION 1.900Å

e3egcD2[D:167-298] Image Pymol Jmol Links: PDB, SCOP, CATH

putative ribose operon repressor ; X-RAY DIFFRACTION 2.350Å

e2o20C2[C:163-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Catabolite control protein A ; X-RAY DIFFRACTION 1.900Å

e3egcF2[F:167-298] Image Pymol Jmol Links: PDB, SCOP, CATH

putative ribose operon repressor ; X-RAY DIFFRACTION 2.350Å

e2o20H2[H:163-292] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Catabolite control protein A ; X-RAY DIFFRACTION 1.900Å

e3egcE2[E:167-298] Image Pymol Jmol Links: PDB, SCOP, CATH

putative ribose operon repressor ; X-RAY DIFFRACTION 2.350Å

e3egcA2[A:167-298] Image Pymol Jmol Links: PDB, SCOP, CATH

putative ribose operon repressor ; X-RAY DIFFRACTION 2.350Å

e3egcB2[B:167-298] Image Pymol Jmol Links: PDB, SCOP, CATH

putative ribose operon repressor ; X-RAY DIFFRACTION 2.350Å

e3egcC2[C:167-298] Image Pymol Jmol Links: PDB, SCOP, CATH

putative ribose operon repressor ; X-RAY DIFFRACTION 2.350Å

e3tb6B2[B:186-312] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ARABINOSE METABOLISM TRANSCRIPTIONAL REPRESSOR ; ligands: ARB ; X-RAY DIFFRACTION 2.21Å

e3e3mA2[A:168-302] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcriptional regulator, LacI family ; X-RAY DIFFRACTION 1.600Å

e4o5aA2[A:171-299] Image Pymol Jmol Links: PDB, SCOP, CATH

LACI FAMILY TRANSCRIPTION REGULATOR ; ligands: GOL,SO4 ; X-RAY DIFFRACTION 1.78Å

e2h0aA2[A:163-289] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Transcriptional regulator ; X-RAY DIFFRACTION 2.60Å

e3d8uB2[B:169-299] Image Pymol Jmol Links: PDB, SCOP, CATH

PURR TRANSCRIPTIONAL REGULATOR ; X-RAY DIFFRACTION 2.88Å

e3tb6A2[A:186-312] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

ARABINOSE METABOLISM TRANSCRIPTIONAL REPRESSOR ; ligands: ARB,GOL ; X-RAY DIFFRACTION 2.21Å

e3e3mD2[D:168-302] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcriptional regulator, LacI family ; X-RAY DIFFRACTION 1.600Å

e3e3mB2[B:168-302] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcriptional regulator, LacI family ; X-RAY DIFFRACTION 1.600Å

e3gybB2[B:159-287] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcriptional regulators (LACI-FAMILY TRANSCRIPTIONAL REGULATORY PROTEIN) ; ligands: MG ; X-RAY DIFFRACTION 1.60Å

e3e3mC2[C:168-302] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcriptional regulator, LacI family ; X-RAY DIFFRACTION 1.600Å

e3ctpB2[B:155-284] Image Pymol Jmol Links: PDB, SCOP, CATH

Periplasmic binding protein/LacI transcriptional regulator ; ligands: NA,XLF ; X-RAY DIFFRACTION 1.41Å

e3hs3A2[A:152-280] Image Pymol Jmol Links: PDB, SCOP, CATH

Ribose operon repressor ; X-RAY DIFFRACTION 1.6Å

e3ctpA2[A:155-284] Image Pymol Jmol Links: PDB, SCOP, CATH

Periplasmic binding protein/LacI transcriptional regulator ; ligands: NA,XLF ; X-RAY DIFFRACTION 1.41Å

e3hs3B2[B:152-280] Image Pymol Jmol Links: PDB, SCOP, CATH

Ribose operon repressor ; X-RAY DIFFRACTION 1.6Å

e3huuD2[D:127-247] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcription regulator like protein ; X-RAY DIFFRACTION 1.95Å

e3bilB2[B:166-293] Image Pymol Jmol Links: PDB, SCOP, CATH

Probable LacI-family transcriptional regulator ; X-RAY DIFFRACTION 2.500Å

e3jvdA2[A:157-283] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcriptional regulators ; ligands: SO4 ; X-RAY DIFFRACTION 2.30Å

e3huuC2[C:127-247] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcription regulator like protein ; X-RAY DIFFRACTION 1.95Å

e3bilA2[A:166-293] Image Pymol Jmol Links: PDB, SCOP, CATH

Probable LacI-family transcriptional regulator ; X-RAY DIFFRACTION 2.500Å

e3e61A2[A:156-281] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative transcriptional repressor of ribose operon ; ligands: GOL ; X-RAY DIFFRACTION 2.000Å

e3huuA2[A:127-247] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcription regulator like protein ; X-RAY DIFFRACTION 1.95Å

e3huuB2[B:127-247] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcription regulator like protein ; X-RAY DIFFRACTION 1.95Å

e3e61B1[B:156-281] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative transcriptional repressor of ribose operon ; ligands: GOL ; X-RAY DIFFRACTION 2.000Å

e4rk0D2[D:171-287] Image Pymol Jmol Links: PDB, SCOP, CATH

LacI family sugar-binding transcriptional regulator ; ligands: RIB ; X-RAY DIFFRACTION 1.800Å

e4rk1A1[A:167-296] Image Pymol Jmol Links: PDB, SCOP, CATH

Ribose transcriptional regulator ; ligands: CL,RIB ; X-RAY DIFFRACTION 1.900Å

e4rk1B1[B:167-296] Image Pymol Jmol Links: PDB, SCOP, CATH

Ribose transcriptional regulator ; ligands: CL,RIB ; X-RAY DIFFRACTION 1.900Å

e4rk1C1[C:167-296] Image Pymol Jmol Links: PDB, SCOP, CATH

Ribose transcriptional regulator ; ligands: CL,RIB ; X-RAY DIFFRACTION 1.900Å

e4rk1D1[D:167-296] Image Pymol Jmol Links: PDB, SCOP, CATH

Ribose transcriptional regulator ; ligands: CL,RIB ; X-RAY DIFFRACTION 1.900Å

e4rk1E1[E:167-296] Image Pymol Jmol Links: PDB, SCOP, CATH

Ribose transcriptional regulator ; ligands: CL,RIB ; X-RAY DIFFRACTION 1.900Å

e4rk1F1[F:167-296] Image Pymol Jmol Links: PDB, SCOP, CATH

Ribose transcriptional regulator ; ligands: CL,RIB ; X-RAY DIFFRACTION 1.900Å

e4rk7A1[A:159-292] Image Pymol Jmol Links: PDB, SCOP, CATH

Glucose-resistance amylase regulator ; ligands: SUC ; X-RAY DIFFRACTION 1.800Å

e4rk7B1[B:159-292] Image Pymol Jmol Links: PDB, SCOP, CATH

Glucose-resistance amylase regulator ; ligands: SUC ; X-RAY DIFFRACTION 1.800Å

e4rk3A2[A:161-288] Image Pymol Jmol Links: PDB, SCOP, CATH

; ligands: GOL

e4rk5A2[A:161-288] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcriptional regulator, LacI family ; ligands: ACT,NA,SUC ; X-RAY DIFFRACTION 1.350Å

e4rkqA2[A:166-299] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcriptional regulator, LacI family ; ligands: CL,EDO ; X-RAY DIFFRACTION 1.900Å

e4rkqB1[B:166-299] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcriptional regulator, LacI family ; ligands: CL,EDO ; X-RAY DIFFRACTION 1.900Å

e4rkqC1[C:166-299] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcriptional regulator, LacI family ; ligands: EDO ; X-RAY DIFFRACTION 1.900Å

e4rkqD1[D:166-299] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcriptional regulator, LacI family ; ligands: EDO ; X-RAY DIFFRACTION 1.900Å

e4rkrA2[A:166-299] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcriptional regulator, LacI family ; ligands: LBT ; X-RAY DIFFRACTION 2.200Å

e4rkrB1[B:166-299] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcriptional regulator, LacI family ; ligands: LBT ; X-RAY DIFFRACTION 2.200Å

e4rkrC1[C:166-299] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcriptional regulator, LacI family ; ligands: LBT ; X-RAY DIFFRACTION 2.200Å

e4rkrD1[D:166-299] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcriptional regulator, LacI family ; ligands: LBT ; X-RAY DIFFRACTION 2.200Å

e4rk4A2[A:161-288] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcriptional regulator, LacI family ; ligands: GLC,NA ; X-RAY DIFFRACTION 1.320Å

e4wxeA2[A:161-288] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcriptional regulator, LacI family ; ligands: CL,EDO,MG,TRS ; X-RAY DIFFRACTION 1.500Å

e4rk0A1[A:171-293] Image Pymol Jmol Links: PDB, SCOP, CATH

LacI family sugar-binding transcriptional regulator ; ligands: RIB ; X-RAY DIFFRACTION 1.800Å

e4rk0B2[B:171-293] Image Pymol Jmol Links: PDB, SCOP, CATH

LacI family sugar-binding transcriptional regulator ; ligands: RIB ; X-RAY DIFFRACTION 1.800Å

e4rk0C2[C:171-293] Image Pymol Jmol Links: PDB, SCOP, CATH

LacI family sugar-binding transcriptional regulator ; ligands: RIB ; X-RAY DIFFRACTION 1.800Å

e1efaB1[B:161-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LAC REPRESSOR ; ligands: NPF ; X-RAY DIFFRACTION 2.6Å

e1efaA3[A:161-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LAC REPRESSOR ; ligands: NPF ; X-RAY DIFFRACTION 2.6Å

e2rgyA2[A:184-319] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcriptional regulator, LacI family ; X-RAY DIFFRACTION 2.05Å

e2pe5A2[A:161-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Lactose operon repressor ; ligands: 145 ; X-RAY DIFFRACTION 3.5Å

e2pe5B2[B:161-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Lactose operon repressor ; ligands: 145 ; X-RAY DIFFRACTION 3.5Å

e2pe5C1[C:161-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Lactose operon repressor ; ligands: 145 ; X-RAY DIFFRACTION 3.5Å

e3hcwA2[A:168-297] Image Pymol Jmol Links: PDB, SCOP, CATH

Maltose operon transcriptional repressor ; ligands: GOL ; X-RAY DIFFRACTION 1.900Å

e3hcwB2[B:168-297] Image Pymol Jmol Links: PDB, SCOP, CATH

Maltose operon transcriptional repressor ; ligands: GOL ; X-RAY DIFFRACTION 1.900Å

e1jwlB2[B:161-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LACTOSE OPERON REPRESSOR ; ligands: NPF ; X-RAY DIFFRACTION 4.0Å

e1jwlA2[A:161-291] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LACTOSE OPERON REPRESSOR ; ligands: NPF ; X-RAY DIFFRACTION 4.0Å

e3g85A1[A:165-297] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcriptional regulator (LacI family) ; ligands: GOL ; X-RAY DIFFRACTION 1.84Å

e4rzsA3[A:161-291,A:332-358] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Lac repressor ; ligands: GOL ; X-RAY DIFFRACTION 2.710Å

Next

e4xxhA2[A:159-282] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HTH-type transcriptional regulator TreR ; ligands: T6P ; X-RAY DIFFRACTION 2.400Å

e2nzuG2[G:160-292] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CATABOLITE CONTROL PROTEIN ; ligands: BG6,SO4 ; X-RAY DIFFRACTION 2.5Å

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.

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