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- PDB-4nig: Crystal structure of AlkB D135I/E136H mutant protein with cofacto... -

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Basic information

Entry
Database: PDB / ID: 4nig
TitleCrystal structure of AlkB D135I/E136H mutant protein with cofactors bound to dsDNA containing m6A/A
Components
  • 5'-D(*AP*AP*CP*GP*GP*TP*AP*TP*TP*AP*CP*CP*T)-3'
  • 5'-D(*TP*AP*GP*GP*TP*AP*AP*(6MA)P*AP*CP*CP*GP*T)-3'
  • Alpha-ketoglutarate-dependent dioxygenase AlkB
KeywordsOXIDOREDUCTASE/DNA / DNA/RNA direct repair / jelly-roll fold / DNA/RNA demethylation repair / Fe(II) / 2-KG / 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 / DNA alkylation repair ...response to methyl methanesulfonate / oxidative RNA demethylation / DNA oxidative demethylase / : / : / : / oxidative RNA demethylase activity / broad specificity oxidative DNA demethylase activity / RNA repair / DNA alkylation repair / oxidative demethylation / DNA demethylation / dioxygenase activity / ferrous iron binding / DNA repair / 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
2-OXOGLUTARIC ACID / : / DNA / DNA (> 10) / Alpha-ketoglutarate-dependent dioxygenase AlkB
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.52 Å
AuthorsYi, C.Q. / Zhu, C.X.
CitationJournal: Angew.Chem.Int.Ed.Engl. / Year: 2014
Title: Switching Demethylation Activities between AlkB Family RNA/DNA Demethylases through Exchange of Active-Site Residues.
Authors: Zhu, C. / Yi, C.
History
DepositionNov 6, 2013Deposition site: RCSB / Processing site: RCSB
Revision 1.0Apr 16, 2014Provider: repository / Type: Initial release
Revision 1.1May 28, 2014Group: Non-polymer description / Structure summary
Revision 1.2Sep 20, 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_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_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

Downloads & links

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Assembly

Deposited unit
A: Alpha-ketoglutarate-dependent dioxygenase AlkB
B: 5'-D(*TP*AP*GP*GP*TP*AP*AP*(6MA)P*AP*CP*CP*GP*T)-3'
C: 5'-D(*AP*AP*CP*GP*GP*TP*AP*TP*TP*AP*CP*CP*T)-3'
hetero molecules


Theoretical massNumber of molelcules
Total (without water)31,0635
Polymers30,8623
Non-polymers2012
Water6,017334
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area4310 Å2
ΔGint-10 kcal/mol
Surface area12590 Å2
MethodPISA
Unit cell
Length a, b, c (Å)41.488, 76.078, 52.191
Angle α, β, γ (deg.)90.00, 108.46, 90.00
Int Tables number4
Space group name H-MP1211

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Components

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Protein , 1 types, 1 molecules A

#1: Protein Alpha-ketoglutarate-dependent dioxygenase AlkB / Alkylated DNA repair protein AlkB / DNA oxidative demethylase AlkB


Mass: 22837.207 Da / Num. of mol.: 1 / Fragment: UNP residues 13-216 / Mutation: S129C/D135I/E136H
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (E. coli) / Gene: alkB, aidD, b2212, JW2200 / Production host: Escherichia coli (E. coli) / References: UniProt: P05050, DNA oxidative demethylase

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DNA chain , 2 types, 2 molecules BC

#2: DNA chain 5'-D(*TP*AP*GP*GP*TP*AP*AP*(6MA)P*AP*CP*CP*GP*T)-3'


Mass: 4073.779 Da / Num. of mol.: 1 / Source method: obtained synthetically
#3: DNA chain 5'-D(*AP*AP*CP*GP*GP*TP*AP*TP*TP*AP*CP*CP*T)-3'


Mass: 3950.598 Da / Num. of mol.: 1 / Source method: obtained synthetically

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Non-polymers , 3 types, 336 molecules

#4: Chemical ChemComp-MN / MANGANESE (II) ION


Mass: 54.938 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Mn
#5: Chemical ChemComp-AKG / 2-OXOGLUTARIC ACID / Α-Ketoglutaric acid


Mass: 146.098 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C5H6O5
#6: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 334 / 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: 2.55 Å3/Da / Density % sol: 51.71 %
Crystal growTemperature: 277 K / Method: vapor diffusion, hanging drop / pH: 6.5
Details: 20% PEG4000, 0.1 M sodium chloride, 0.05 M magnesium chloride, 0.1 M cacodylate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K

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Data collection

DiffractionMean temperature: 200 K
Diffraction sourceSource: SYNCHROTRON / Site: SSRF / Beamline: BL17U / Wavelength: 0.97 Å
DetectorType: ADSC QUANTUM 315r / Detector: CCD / Date: Jan 28, 2013
RadiationMonochromator: double crystal Si(111) / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.97 Å / Relative weight: 1
ReflectionResolution: 1.52→50 Å / Num. all: 44151 / Num. obs: 44019 / % possible obs: 99.7 % / Observed criterion σ(F): 2.3 / Observed criterion σ(I): 2.3
Reflection shellResolution: 1.52→1.57 Å / % possible all: 100

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Processing

Software
NameVersionClassification
HKL-2000data collection
REFMAC5.7.0029refinement
HKL-2000data reduction
HKL-2000data scaling
REFMAC5.7.0029phasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 3BIE

3bie


Resolution: 1.52→37.07 Å / Cor.coef. Fo:Fc: 0.967 / Cor.coef. Fo:Fc free: 0.953 / SU B: 3.226 / SU ML: 0.059 / Cross valid method: THROUGHOUT / ESU R: 0.076 / ESU R Free: 0.078 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
RfactorNum. reflection% reflectionSelection details
Rfree0.21181 2338 5 %RANDOM
Rwork0.1796 ---
obs0.18122 44019 97.26 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
Displacement parametersBiso mean: 22.882 Å2
Baniso -1Baniso -2Baniso -3
1--2.86 Å20 Å2-0.44 Å2
2---2.47 Å20 Å2
3---4.48 Å2
Refinement stepCycle: LAST / Resolution: 1.52→37.07 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1581 506 11 334 2432
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0120.0172263
X-RAY DIFFRACTIONr_bond_other_d0.0020.021890
X-RAY DIFFRACTIONr_angle_refined_deg1.5621.7643181
X-RAY DIFFRACTIONr_angle_other_deg134363
X-RAY DIFFRACTIONr_dihedral_angle_1_deg6.5535212
X-RAY DIFFRACTIONr_dihedral_angle_2_deg37.38822.72777
X-RAY DIFFRACTIONr_dihedral_angle_3_deg13.20815262
X-RAY DIFFRACTIONr_dihedral_angle_4_deg14.2551513
X-RAY DIFFRACTIONr_chiral_restr0.1040.2316
X-RAY DIFFRACTIONr_gen_planes_refined0.0090.0212265
X-RAY DIFFRACTIONr_gen_planes_other0.0020.02543
LS refinement shellResolution: 1.52→1.556 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.323 162 -
Rwork0.298 3117 -
obs--93.82 %
Refinement TLS params.

Method: refined / Refine-ID: X-RAY DIFFRACTION

IDL11 (°2)L12 (°2)L13 (°2)L22 (°2)L23 (°2)L33 (°2)S11 (Å °)S12 (Å °)S13 (Å °)S21 (Å °)S22 (Å °)S23 (Å °)S31 (Å °)S32 (Å °)S33 (Å °)T11 (Å2)T12 (Å2)T13 (Å2)T22 (Å2)T23 (Å2)T33 (Å2)Origin x (Å)Origin y (Å)Origin z (Å)
10.3703-0.00940.00320.52860.12870.03250.0021-0.00080.0164-0.0245-0.00560.0136-0.00360.00990.00350.0983-0.00240.02140.11630.00570.006423.3591.166875.1074
22.39490.78931.80997.04351.80843.42110.07110.3127-0.1963-0.15120.2310.0271-0.25740.2373-0.30210.08890.02820.01350.1444-0.00350.037813.2747-8.067850.8555
31.1121-0.6724-0.05540.6802-0.01480.01870.06470.0518-0.0651-0.0673-0.0630.0206-0.02610.0049-0.00170.10930.00590.02270.1105-0.01150.012128.5133-16.752862.8467
Refinement TLS group
IDRefine-IDRefine TLS-IDAuth asym-IDAuth seq-ID
1X-RAY DIFFRACTION1A13 - 213
2X-RAY DIFFRACTION2B2 - 5
3X-RAY DIFFRACTION2C10 - 13
4X-RAY DIFFRACTION3B6 - 13
5X-RAY DIFFRACTION3C1 - 9

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