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- PDB-2fdg: Crystal Structure of AlkB in complex with Fe(II), succinate, and ... -

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Basic information

Entry
Database: PDB / ID: 2fdg
TitleCrystal Structure of AlkB in complex with Fe(II), succinate, and methylated trinucleotide T-meA-T
Components
  • 5'-D(P*TP*(MA7)P*T)-3'
  • Alkylated DNA repair protein alkB
KeywordsOXIDOREDUCTASE/DNA / beta jellyroll / Structural Genomics / PSI / Protein Structure Initiative / Northeast Structural Genomics Consortium / NESG / OXIDOREDUCTASE-DNA COMPLEX
Function / homology
Function and homology information


response to methyl methanesulfonate / oxidative RNA demethylation / DNA oxidative demethylase / oxidative RNA demethylase activity / broad specificity oxidative DNA demethylase activity / RNA repair / oxidative demethylation / DNA alkylation repair / dioxygenase activity / ferrous iron binding ...response to methyl methanesulfonate / oxidative RNA demethylation / DNA oxidative demethylase / oxidative RNA demethylase activity / broad specificity oxidative DNA demethylase activity / RNA repair / oxidative demethylation / DNA alkylation repair / dioxygenase activity / ferrous iron binding / DNA repair / cytosol / cytoplasm
Similarity search - Function
Alkylated DNA repair protein AlkB / Alpha-ketoglutarate-dependent dioxygenase AlkB-like / Alpha-ketoglutarate-dependent dioxygenase AlkB-like / 2OG-Fe(II) oxygenase superfamily / Alpha-ketoglutarate-dependent dioxygenase AlkB-like superfamily / Oxoglutarate/iron-dependent dioxygenase / Fe(2+) 2-oxoglutarate dioxygenase domain profile. / Jelly Rolls / Sandwich / Mainly Beta
Similarity search - Domain/homology
: / SUCCINIC ACID / DNA / Alpha-ketoglutarate-dependent dioxygenase AlkB
Similarity search - Component
Biological speciesEscherichia coli K12 (bacteria)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 2.2 Å
AuthorsYu, B. / Benach, J. / Edstrom, W.C. / Gibney, B.R. / Hunt, J.F. / Northeast Structural Genomics Consortium (NESG)
CitationJournal: Nature / Year: 2006
Title: Crystal structures of catalytic complexes of the oxidative DNA/RNA repair enzyme AlkB.
Authors: Yu, B. / Edstrom, W.C. / Benach, J. / Hamuro, Y. / Weber, P.C. / Gibney, B.R. / Hunt, J.F.
History
DepositionDec 13, 2005Deposition site: RCSB / Processing site: RCSB
Revision 1.0Feb 21, 2006Provider: repository / Type: Initial release
Revision 1.1May 1, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Oct 18, 2017Group: Refinement description / Category: software
Revision 1.4Aug 30, 2023Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / pdbx_struct_conn_angle / struct_conn / struct_conn_type / 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_asym_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_asym_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.conn_type_id / _struct_conn.id / _struct_conn.pdbx_dist_value / _struct_conn.pdbx_leaving_atom_flag / _struct_conn.ptnr1_auth_asym_id / _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_asym_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_conn_type.id / _struct_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Remark 600HETEROGEN The close contacts in remark 500 are due to iron coordination.

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
B: 5'-D(P*TP*(MA7)P*T)-3'
A: Alkylated DNA repair protein alkB
hetero molecules


Theoretical massNumber of molelcules
Total (without water)24,6774
Polymers24,5032
Non-polymers1742
Water2,144119
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)40.466, 40.466, 117.366
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number78
Space group name H-MP43

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Components

#1: DNA chain 5'-D(P*TP*(MA7)P*T)-3'


Mass: 891.669 Da / Num. of mol.: 1 / Source method: obtained synthetically
#2: Protein Alkylated DNA repair protein alkB


Mass: 23610.975 Da / Num. of mol.: 1 / Fragment: residues 12-216
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli K12 (bacteria) / Species: Escherichia coli / Strain: K-12 / Gene: alkB, aidD / Plasmid: pET26 / Species (production host): Escherichia coli / Production host: Escherichia coli BL21(DE3) (bacteria) / Strain (production host): BL21(DE3) / References: UniProt: P05050
#3: Chemical ChemComp-FE2 / FE (II) ION


Mass: 55.845 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Fe
#4: Chemical ChemComp-SIN / SUCCINIC ACID


Mass: 118.088 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C4H6O4
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 119 / 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: 1.96 Å3/Da / Density % sol: 37.23 %
Crystal growTemperature: 298 K / Method: vapor diffusion, hanging drop
Details: 22-24% (w/v) PEG 3350, 10% glycerol and 200 mM sodium formate, VAPOR DIFFUSION, HANGING DROP, temperature 298K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RU200 / Wavelength: 1.5418 Å
DetectorType: RIGAKU RAXIS IV / Detector: IMAGE PLATE / Date: Aug 17, 2005 / Details: Yale/MSC mirrors
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 2.2→20 Å / Num. obs: 9504 / % possible obs: 99 % / Redundancy: 4.8 % / Rmerge(I) obs: 0.089 / Χ2: 1.026 / Net I/σ(I): 17.77
Reflection shellResolution: 2.2→2.28 Å / Redundancy: 3.9 % / Rmerge(I) obs: 0.304 / Mean I/σ(I) obs: 4.8 / Num. unique all: 932 / Χ2: 1.258 / % possible all: 98.3

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Processing

Software
NameVersionClassificationNB
DENZOdata reduction
SCALEPACKdata scaling
CNS1.1refinement
PDB_EXTRACT1.701data extraction
COMOphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB 2FD8

2fd8


Resolution: 2.2→19.94 Å / Rfactor Rfree error: 0.007 / Data cutoff high absF: 1079489.75 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 1
RfactorNum. reflection% reflectionSelection details
Rfree0.231 965 10.5 %RANDOM
Rwork0.195 ---
obs-9172 95.8 %-
Solvent computationSolvent model: FLAT MODEL / Bsol: 41.185 Å2 / ksol: 0.367 e/Å3
Displacement parametersBiso mean: 19.1 Å2
Baniso -1Baniso -2Baniso -3
1--2.02 Å20 Å20 Å2
2---2.02 Å20 Å2
3---4.03 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.29 Å0.22 Å
Luzzati d res low-5 Å
Luzzati sigma a0.22 Å0.15 Å
Refinement stepCycle: LAST / Resolution: 2.2→19.94 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1556 63 9 119 1747
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_bond_d0.012
X-RAY DIFFRACTIONc_angle_deg1.6
X-RAY DIFFRACTIONc_dihedral_angle_d26.3
X-RAY DIFFRACTIONc_improper_angle_d1.51
X-RAY DIFFRACTIONc_mcbond_it1.231.5
X-RAY DIFFRACTIONc_mcangle_it1.912
X-RAY DIFFRACTIONc_scbond_it1.992
X-RAY DIFFRACTIONc_scangle_it2.892.5
LS refinement shellResolution: 2.2→2.34 Å / Rfactor Rfree error: 0.022 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.267 146 10.3 %
Rwork0.222 1277 -
obs-1423 90.7 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1protein_rep.paramprotein.top
X-RAY DIFFRACTION2water_rep.paramwater.top
X-RAY DIFFRACTION3dna-rna_rep.param_bydna-rna.top_by
X-RAY DIFFRACTION4ion.paramion.top

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