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- PDB-1fwz: GLU20ALA DTXR -

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Basic information

Entry
Database: PDB / ID: 1fwz
TitleGLU20ALA DTXR
ComponentsDIPHTHERIA TOXIN REPRESSOR
KeywordsGENE REGULATION / metal binding protein / DNA binding protein / regulator
Function / homology
Function and homology information


transition metal ion binding / SH3 domain binding / protein dimerization activity / DNA-binding transcription factor activity / negative regulation of DNA-templated transcription / DNA binding / identical protein binding / cytoplasm
Similarity search - Function
Diphteria toxin repressor, SH3 domain / Diphteria toxin repressor SH3 domain / Ferrous iron transport protein A (FeoA) / Iron dependent repressor, metal binding and dimerisation domain / Ferrous iron transporter, core domain / Ferrous iron transporter FeoA domain / FeoA / DtxR-type HTH domain profile. / DTXR-type HTH domain / Iron dependent repressor, N-terminal DNA binding domain ...Diphteria toxin repressor, SH3 domain / Diphteria toxin repressor SH3 domain / Ferrous iron transport protein A (FeoA) / Iron dependent repressor, metal binding and dimerisation domain / Ferrous iron transporter, core domain / Ferrous iron transporter FeoA domain / FeoA / DtxR-type HTH domain profile. / DTXR-type HTH domain / Iron dependent repressor, N-terminal DNA binding domain / Iron dependent repressor, metal binding and dimerisation domain / Iron dependent repressor / Iron dependent repressor, metal binding and dimerisation domain superfamily / Iron dependent repressor, metal binding and dimerisation domain / Helix-turn-helix diphteria tox regulatory element / Diphtheria Toxin Repressor; domain 2 / Transcriptional repressor, C-terminal / Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain / SH3 type barrels. / Arc Repressor Mutant, subunit A / Winged helix DNA-binding domain superfamily / Roll / Winged helix-like DNA-binding domain superfamily / Orthogonal Bundle / Mainly Beta / Mainly Alpha
Similarity search - Domain/homology
Diphtheria toxin repressor / Diphtheria toxin repressor
Similarity search - Component
Biological speciesCorynebacterium diphtheriae (bacteria)
MethodX-RAY DIFFRACTION / Resolution: 2.3 Å
AuthorsPohl, E. / Goranson-Siekierke, J. / Holmes, R.K. / Hol, W.G.J.
CitationJournal: Acta Crystallogr.,Sect.D / Year: 2001
Title: Structures of three diphtheria toxin repressor (DtxR) variants with decreased repressor activity.
Authors: Pohl, E. / Goranson-Siekierke, J. / Choi, M.K. / Roosild, T. / Holmes, R.K. / Hol, W.G.
History
DepositionSep 25, 2000Deposition site: RCSB / Processing site: RCSB
Revision 1.0Sep 25, 2001Provider: repository / Type: Initial release
Revision 1.1Apr 27, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Nov 3, 2021Group: Database references / Derived calculations
Category: database_2 / pdbx_struct_conn_angle ...database_2 / pdbx_struct_conn_angle / struct_conn / struct_ref_seq_dif / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_atom_id / _pdbx_struct_conn_angle.ptnr1_label_comp_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_atom_id / _pdbx_struct_conn_angle.ptnr3_label_comp_id / _pdbx_struct_conn_angle.ptnr3_label_seq_id / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _struct_conn.pdbx_leaving_atom_flag / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr2_auth_comp_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_atom_id / _struct_conn.ptnr2_label_comp_id / _struct_conn.ptnr2_label_seq_id / _struct_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: DIPHTHERIA TOXIN REPRESSOR
hetero molecules


Theoretical massNumber of molelcules
Total (without water)25,4853
Polymers25,3241
Non-polymers1612
Water2,486138
1
A: DIPHTHERIA TOXIN REPRESSOR
hetero molecules

A: DIPHTHERIA TOXIN REPRESSOR
hetero molecules


Theoretical massNumber of molelcules
Total (without water)50,9716
Polymers50,6482
Non-polymers3234
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation5_675x-y+1,-y+2,-z+2/31
Unit cell
Length a, b, c (Å)63.7, 63.7, 106.9
Angle α, β, γ (deg.)90, 90, 120
Int Tables number152
Space group name H-MP3121

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Components

#1: Protein DIPHTHERIA TOXIN REPRESSOR / DTXR


Mass: 25323.824 Da / Num. of mol.: 1 / Mutation: E20A
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Corynebacterium diphtheriae (bacteria) / Production host: Escherichia coli (E. coli) / References: UniProt: P33120, UniProt: P0DJL7*PLUS
#2: Chemical ChemComp-SO4 / SULFATE ION


Mass: 96.063 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: SO4
#3: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Zn
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 138 / Source method: isolated from a natural source / Formula: H2O

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 2.47 Å3/Da / Density % sol: 50.23 %
Crystal growTemperature: 298 K / Method: vapor diffusion, hanging drop / pH: 8.5
Details: 1.6-2.0 ammonium sulfate, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Crystal grow
*PLUS
pH: 8
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDChemical formula
110 mMTris1drop
2100 mM1dropNaCl
32.2 mg/mlprotein1drop
4100 mMTris1reservoir
52.0 Mammonium sulfate1reservoir
65 %glycerol1reservoir

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RU200 / Wavelength: 1.54
DetectorType: RIGAKU RAXIS II / Detector: IMAGE PLATE / Date: Jan 10, 1998
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.54 Å / Relative weight: 1
ReflectionResolution: 2.3→20 Å / Num. all: 11904 / Num. obs: 9634 / % possible obs: 81 % / Observed criterion σ(F): 2 / Observed criterion σ(I): 2 / Redundancy: 6.1 % / Biso Wilson estimate: 40 Å2 / Rmerge(I) obs: 0.084 / Net I/σ(I): 17.4
Reflection shellResolution: 2.3→2.38 Å / Redundancy: 3 % / Rmerge(I) obs: 0.4 / Num. unique all: 1124 / % possible all: 74
Reflection
*PLUS
Lowest resolution: 20 Å / % possible obs: 81 %

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Processing

Software
NameVersionClassification
AMoREphasing
X-PLOR3.851refinement
DENZOdata reduction
SCALEPACKdata scaling
RefinementResolution: 2.3→8 Å / σ(F): 2 / σ(I): 2 / Stereochemistry target values: Engh & Huber
RfactorNum. reflectionSelection details
Rfree0.285 549 RANDOM
Rwork0.196 --
obs0.196 10784 -
all-11904 -
Refinement stepCycle: LAST / Resolution: 2.3→8 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1581 0 6 138 1725
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_bond_d0.013
X-RAY DIFFRACTIONx_angle_deg1.5
Software
*PLUS
Name: X-PLOR / Version: 3.851 / Classification: refinement
Refinement
*PLUS
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Type: x_angle_deg / Dev ideal: 1.5

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