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- PDB-1kg4: Crystal structure of the K142A mutant of E. coli MutY (core fragment) -

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Basic information

Entry
Database: PDB / ID: 1kg4
TitleCrystal structure of the K142A mutant of E. coli MutY (core fragment)
ComponentsA/G-specific adenine glycosylase
KeywordsHYDROLASE / DNA Repair
Function / homology
Function and homology information


adenine glycosylase / adenine/guanine mispair binding / 8-oxo-7,8-dihydroguanine DNA N-glycosylase activity / purine-specific mismatch base pair DNA N-glycosylase activity / oxidized purine DNA binding / mismatch repair / base-excision repair / 4 iron, 4 sulfur cluster binding / metal ion binding
Similarity search - Function
Endonuclease III-like, conserved site-2 / Endonuclease III family signature. / Endonuclease III, iron-sulphur binding site / Endonuclease III iron-sulfur binding region signature. / A/G-specific adenine glycosylase MutY / Iron-sulfur binding domain of endonuclease III / Adenine/Thymine-DNA glycosylase / Helix-hairpin-helix motif / MutY, C-terminal / NUDIX domain ...Endonuclease III-like, conserved site-2 / Endonuclease III family signature. / Endonuclease III, iron-sulphur binding site / Endonuclease III iron-sulfur binding region signature. / A/G-specific adenine glycosylase MutY / Iron-sulfur binding domain of endonuclease III / Adenine/Thymine-DNA glycosylase / Helix-hairpin-helix motif / MutY, C-terminal / NUDIX domain / Endonuclease III-like, iron-sulphur cluster loop motif / FES / Helix-hairpin-helix motif / Helix-hairpin-Helix base-excision DNA repair enzymes (C-terminal) / Endonuclease Iii, domain 2 / Hypothetical protein; domain 2 / HhH-GPD superfamily base excision DNA repair protein / Helix-hairpin-helix, base-excision DNA repair, C-terminal / HhH-GPD domain / endonuclease III / Endonuclease III; domain 1 / DNA glycosylase / NUDIX hydrolase-like domain superfamily / Orthogonal Bundle / Mainly Alpha
Similarity search - Domain/homology
IRON/SULFUR CLUSTER / Adenine DNA glycosylase
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
MethodX-RAY DIFFRACTION / SYNCHROTRON / difference fourier / Resolution: 1.6 Å
AuthorsGilboa, R. / Kilshtein, A. / Zharkov, D.O. / Kycia, J.H. / Gerchman, S.E. / Grollman, A.P. / Shoham, G.
Citation
Journal: To be Published
Title: Analysis of the E.coli MutY DNA glycosylase structure and function by site-directed mutagenesis
Authors: Gilboa, R. / Kilshtein, A. / Zharkov, D.O. / Kycia, J.H. / Gerchman, S.E. / Grollman, A.P. / Shoham, G.
#1: Journal: Biochemistry / Year: 2000
Title: Role for Lysine 142 in the excision of adenine from A:G mispairs by MutY DNA glycosylase of Escherichia coli.
Authors: Zharkov, D.O. / Gilboa, R. / Yagil, I. / Kycia, J.H. / Gerchman, S.E. / Shoham, G. / Grollmam, A.P.
History
DepositionNov 26, 2001Deposition site: RCSB / Processing site: RCSB
Revision 1.0Nov 26, 2002Provider: repository / Type: Initial release
Revision 1.1Apr 27, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Non-polymer description / Version format compliance
Revision 1.3Jul 24, 2019Group: Data collection / Refinement description / Category: software / Item: _software.classification / _software.name
Revision 1.4Oct 27, 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_seq_id / _pdbx_struct_conn_angle.ptnr1_label_atom_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr2_label_atom_id / _pdbx_struct_conn_angle.ptnr3_label_atom_id / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _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
Revision 1.5Aug 16, 2023Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond / pdbx_initial_refinement_model

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: A/G-specific adenine glycosylase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)25,6235
Polymers24,9911
Non-polymers6324
Water5,999333
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)83.03, 50.06, 69.88
Angle α, β, γ (deg.)90.00, 122.6, 90.00
Int Tables number5
Space group name H-MC121
Components on special symmetry positions
IDModelComponents
11A-654-

HOH

21A-696-

HOH

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Components

#1: Protein A/G-specific adenine glycosylase


Mass: 24990.889 Da / Num. of mol.: 1 / Fragment: Catalytic domain / Mutation: K142A
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (E. coli) / Gene: mutY / Plasmid: pET13a / Production host: Escherichia coli (E. coli) / Strain (production host): B834(DE3)
References: UniProt: P17802, Hydrolases; Glycosylases; Hydrolysing N-glycosyl compounds
#2: Chemical ChemComp-SO4 / SULFATE ION


Mass: 96.063 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: SO4
#3: Chemical ChemComp-SF4 / IRON/SULFUR CLUSTER


Mass: 351.640 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Fe4S4
#4: Chemical ChemComp-GOL / GLYCEROL / GLYCERIN / PROPANE-1,2,3-TRIOL


Mass: 92.094 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C3H8O3
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 333 / 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: 1.79 Å3/Da / Density % sol: 49.72 %
Crystal growTemperature: 288 K / Method: vapor diffusion, hanging drop / pH: 8
Details: Lithium sulfate, HEPES, Sodium chloride, Magnesium sulfate, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 288K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: NSLS / Beamline: X26C / Wavelength: 1.1 Å
DetectorType: ADSC QUANTUM 4 / Detector: CCD / Date: Apr 13, 2000
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.1 Å / Relative weight: 1
ReflectionResolution: 1.6→20 Å / Num. all: 30985 / Num. obs: 30985 / % possible obs: 96.7 % / Observed criterion σ(I): 0 / Redundancy: 4.5 % / Biso Wilson estimate: 9.8 Å2 / Rsym value: 0.047 / Net I/σ(I): 17.7
Reflection shellResolution: 1.6→1.63 Å / Redundancy: 3 % / Num. unique all: 1143 / Rsym value: 0.229 / % possible all: 70.9

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Processing

Software
NameClassification
SHELXL-97refinement
SCALEPACKdata scaling
CNSrefinement
DENZOdata reduction
CNSphasing
RefinementMethod to determine structure: difference fourier
Starting model: 1KG2

1kg2


Resolution: 1.6→20 Å / Num. parameters: 8719 / Num. restraintsaints: 7593 / Cross valid method: FREE R / σ(F): 0 / Stereochemistry target values: ENGH & HUBER / Details: CNS 0.9 WAS ALSO USED IN REFINEMENT.
RfactorNum. reflection% reflectionSelection details
Rfree0.197 1548 5.3 %RANDOM
Rwork0.149 ---
all-30985 --
obs-30985 96.7 %-
Displacement parametersBiso mean: 13.1 Å2
Refine analyzeLuzzati coordinate error obs: 0.14 Å / Num. disordered residues: 8 / Occupancy sum hydrogen: 0 / Occupancy sum non hydrogen: 2119
Refinement stepCycle: LAST / Resolution: 1.6→20 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1748 0 25 333 2106
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONs_bond_d0.01
X-RAY DIFFRACTIONs_angle_d0.024
X-RAY DIFFRACTIONs_similar_dist0
X-RAY DIFFRACTIONs_from_restr_planes0.0219
X-RAY DIFFRACTIONs_zero_chiral_vol0.041
X-RAY DIFFRACTIONs_non_zero_chiral_vol0.052
X-RAY DIFFRACTIONs_anti_bump_dis_restr0.016
X-RAY DIFFRACTIONs_rigid_bond_adp_cmpnt0.004
X-RAY DIFFRACTIONs_similar_adp_cmpnt0.057
X-RAY DIFFRACTIONs_approx_iso_adps0

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