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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

X: HTH
H: HTH
T: winged
F: HTH_24

PF13412 CL0123

Representatives:

e2cfxA1[A:1-63] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HTH-TYPE TRANSCRIPTIONAL REGULATOR LRPC ; X-RAY DIFFRACTION 2.400Å

e1i1gB1[B:2-61] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTIONAL REGULATOR LRPA ; X-RAY DIFFRACTION 2.9Å

e1i1gA1[A:2-61] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTIONAL REGULATOR LRPA ; X-RAY DIFFRACTION 2.9Å

e2cfxE1[E:1-63] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HTH-TYPE TRANSCRIPTIONAL REGULATOR LRPC ; X-RAY DIFFRACTION 2.400Å

e2cfxD1[D:1-63] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HTH-TYPE TRANSCRIPTIONAL REGULATOR LRPC ; X-RAY DIFFRACTION 2.400Å

e2cfxB1[B:1-63] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HTH-TYPE TRANSCRIPTIONAL REGULATOR LRPC ; X-RAY DIFFRACTION 2.400Å

e2cfxC1[C:1-63] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HTH-TYPE TRANSCRIPTIONAL REGULATOR LRPC ; X-RAY DIFFRACTION 2.400Å

e2cfxH1[H:1-63] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HTH-TYPE TRANSCRIPTIONAL REGULATOR LRPC ; X-RAY DIFFRACTION 2.400Å

e2cfxF1[F:1-63] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HTH-TYPE TRANSCRIPTIONAL REGULATOR LRPC ; X-RAY DIFFRACTION 2.400Å

e2cfxG1[G:1-63] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HTH-TYPE TRANSCRIPTIONAL REGULATOR LRPC ; X-RAY DIFFRACTION 2.400Å

e3i4pA1[A:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH

Transcriptional regulator, AsnC family ; ligands: CL ; X-RAY DIFFRACTION 2.200Å

e2l4aA1[A:1-66] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

LEUCINE RESPONSIVE REGULATORY PROTEIN ; SOLUTION NMR

e2gqqA1[A:12-71] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Leucine-responsive regulatory protein ; X-RAY DIFFRACTION 3.2Å

e2p5vA1[A:3-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTIONAL REGULATOR, LRP/ASNC FAMILY ; ligands: GOL ; X-RAY DIFFRACTION 1.99Å

e2e7wA1[A:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

150aa long hypothetical transcriptional regulator ; ligands: GLN,MG ; X-RAY DIFFRACTION 1.82Å

e2dbbA1[A:6-65] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative HTH-type transcriptional regulator PH0061 ; X-RAY DIFFRACTION 2.0Å

e2dbbB1[B:4-65] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative HTH-type transcriptional regulator PH0061 ; X-RAY DIFFRACTION 2.0Å

e2gqqB1[B:12-71] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Leucine-responsive regulatory protein ; X-RAY DIFFRACTION 3.2Å

e2gqqC1[C:8-71] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Leucine-responsive regulatory protein ; X-RAY DIFFRACTION 3.2Å

e2gqqD1[D:12-71] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Leucine-responsive regulatory protein ; X-RAY DIFFRACTION 3.2Å

e2p5vB1[B:3-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTIONAL REGULATOR, LRP/ASNC FAMILY ; ligands: GOL ; X-RAY DIFFRACTION 1.99Å

e2p5vC1[C:5-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTIONAL REGULATOR, LRP/ASNC FAMILY ; X-RAY DIFFRACTION 1.99Å

e2p5vD1[D:3-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTIONAL REGULATOR, LRP/ASNC FAMILY ; X-RAY DIFFRACTION 1.99Å

e2p5vE1[E:3-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTIONAL REGULATOR, LRP/ASNC FAMILY ; ligands: CL ; X-RAY DIFFRACTION 1.99Å

e2p5vF1[F:5-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTIONAL REGULATOR, LRP/ASNC FAMILY ; ligands: CL ; X-RAY DIFFRACTION 1.99Å

e2p5vG1[G:1-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTIONAL REGULATOR, LRP/ASNC FAMILY ; ligands: GOL ; X-RAY DIFFRACTION 1.99Å

e2p5vH1[H:5-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTIONAL REGULATOR, LRP/ASNC FAMILY ; ligands: GOL ; X-RAY DIFFRACTION 1.99Å

e2p6sA1[A:3-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTIONAL REGULATOR, LRP/ASNC FAMILY ; ligands: GOL ; X-RAY DIFFRACTION 2.8Å

e2p6sB1[B:3-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTIONAL REGULATOR, LRP/ASNC FAMILY ; ligands: CA ; X-RAY DIFFRACTION 2.8Å

e2p6sC1[C:5-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTIONAL REGULATOR, LRP/ASNC FAMILY ; ligands: GOL ; X-RAY DIFFRACTION 2.8Å

e2p6sD1[D:3-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTIONAL REGULATOR, LRP/ASNC FAMILY ; ligands: GOL ; X-RAY DIFFRACTION 2.8Å

e2p6sE1[E:3-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTIONAL REGULATOR, LRP/ASNC FAMILY ; X-RAY DIFFRACTION 2.8Å

e2p6sF1[F:5-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTIONAL REGULATOR, LRP/ASNC FAMILY ; X-RAY DIFFRACTION 2.8Å

e2p6sG1[G:1-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTIONAL REGULATOR, LRP/ASNC FAMILY ; X-RAY DIFFRACTION 2.8Å

e2p6sH1[H:5-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTIONAL REGULATOR, LRP/ASNC FAMILY ; X-RAY DIFFRACTION 2.8Å

e2p6tA1[A:3-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTIONAL REGULATOR, LRP/ASNC FAMILY ; ligands: GOL,LEU ; X-RAY DIFFRACTION 2.9Å

e2p6tB1[B:3-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTIONAL REGULATOR, LRP/ASNC FAMILY ; X-RAY DIFFRACTION 2.9Å

e2p6tC1[C:5-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTIONAL REGULATOR, LRP/ASNC FAMILY ; X-RAY DIFFRACTION 2.9Å

e2p6tD1[D:3-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTIONAL REGULATOR, LRP/ASNC FAMILY ; ligands: GOL,LEU ; X-RAY DIFFRACTION 2.9Å

e2p6tE1[E:5-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTIONAL REGULATOR, LRP/ASNC FAMILY ; ligands: GOL,LEU ; X-RAY DIFFRACTION 2.9Å

e2p6tF1[F:4-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTIONAL REGULATOR, LRP/ASNC FAMILY ; ligands: GOL,LEU ; X-RAY DIFFRACTION 2.9Å

e2p6tG1[G:1-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTIONAL REGULATOR, LRP/ASNC FAMILY ; X-RAY DIFFRACTION 2.9Å

e2p6tH1[H:5-65] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCRIPTIONAL REGULATOR, LRP/ASNC FAMILY ; X-RAY DIFFRACTION 2.9Å

e2e7xA1[A:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

150aa long hypothetical transcriptional regulator ; ligands: GLN,MG ; X-RAY DIFFRACTION 1.80Å

e2efnA1[A:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

150aa long hypothetical transcriptional regulator ; ligands: MG ; X-RAY DIFFRACTION 1.98Å

e2efoA1[A:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

150aa long hypothetical transcriptional regulator ; ligands: MG ; X-RAY DIFFRACTION 2.20Å

e2efpA1[A:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

150aa long hypothetical transcriptional regulator ; ligands: GLN,MG ; X-RAY DIFFRACTION 2.20Å

e2efqA1[A:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

150aa long hypothetical transcriptional regulator ; ligands: GLN,MG ; X-RAY DIFFRACTION 2.15Å

e2pmhA1[A:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

150aa long hypothetical transcriptional regulator ; ligands: GLN,MG ; X-RAY DIFFRACTION 1.90Å

e2pn6A1[A:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

150aa long hypothetical transcriptional regulator ; X-RAY DIFFRACTION 1.44Å

e2yx4A1[A:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

150aa long hypothetical transcriptional regulator ; ligands: GLN,MG ; X-RAY DIFFRACTION 2Å

e2yx7A1[A:1-60] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

150aa long hypothetical transcriptional regulator ; ligands: GLN,MG ; X-RAY DIFFRACTION 2.05Å

e2ia0A3[A:5-63] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative HTH-type transcriptional regulator PF0864 ; X-RAY DIFFRACTION 2.37Å

e2ia0B3[B:5-63] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative HTH-type transcriptional regulator PF0864 ; X-RAY DIFFRACTION 2.37Å

e2hoeA1[A:10-71] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

N-acetylglucosamine kinase ; X-RAY DIFFRACTION 2.460Å

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.

T: DNA-binding domain of intron-encoded endonucleases

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