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- PDB-1sk2: ARSENATE REDUCTASE R60A MUTANT +0.4M ARSENATE FROM E. COLI -

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Basic information

Entry
Database: PDB / ID: 1sk2
TitleARSENATE REDUCTASE R60A MUTANT +0.4M ARSENATE FROM E. COLI
ComponentsArsenate reductase
KeywordsOXIDOREDUCTASE / ARSC / REDUCTASE / ARSENITE / ARSENATE
Function / homology
Function and homology information


arsenate reductase (glutathione/glutaredoxin) / arsenate reductase (glutaredoxin) activity / response to arsenic-containing substance
Similarity search - Function
Arsenate reductase / Arsenate reductase-like / ArsC family / ArsC family profile. / Glutaredoxin / Glutaredoxin / Thioredoxin-like superfamily / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
: / Arsenate reductase
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
MethodX-RAY DIFFRACTION / SINGLE WAVELENGTH METHOD USED TO DETERMINE THE STRUCTURE: FOURIER SYNTHESIS / Resolution: 1.54 Å
AuthorsDeMel, S. / Edwards, B.F.
CitationJournal: Protein Sci. / Year: 2004
Title: Arginine 60 in the ArsC arsenate reductase of E. coli plasmid R773 determines the chemical nature of the bound As(III) product.
Authors: DeMel, S. / Shi, J. / Martin, P. / Rosen, B.P. / Edwards, B.F.
History
DepositionMar 4, 2004Deposition site: RCSB / Processing site: RCSB
Revision 1.0Feb 15, 2005Provider: repository / Type: Initial release
Revision 1.1Apr 29, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Derived calculations / Version format compliance
Revision 1.3Oct 11, 2017Group: Refinement description / Category: software
Revision 1.4Apr 4, 2018Group: Data collection / Category: diffrn_source / Item: _diffrn_source.type
Revision 1.5Aug 29, 2018Group: Data collection / Source and taxonomy / Structure summary
Category: entity / entity_src_gen / entity_src_nat / Item: _entity.src_method
Revision 1.6Jul 24, 2019Group: Data collection / Refinement description / Category: software / Item: _software.classification / _software.name
Revision 1.7Oct 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_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.ptnr1_symmetry / _pdbx_struct_conn_angle.ptnr2_auth_seq_id / _pdbx_struct_conn_angle.ptnr2_label_asym_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.ptnr3_symmetry / _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.ptnr1_symmetry / _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.ptnr2_symmetry / _struct_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Revision 1.8Feb 14, 2024Group: Data collection / Category: chem_comp_atom / chem_comp_bond
Revision 1.9Apr 3, 2024Group: Refinement description / Category: pdbx_initial_refinement_model

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Arsenate reductase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)16,4548
Polymers15,6341
Non-polymers8207
Water5,206289
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPQS
Unit cell
Length a, b, c (Å)86.440, 86.440, 116.450
Angle α, β, γ (deg.)90.00, 90.00, 120.00
Int Tables number178
Space group name H-MP6122
Components on special symmetry positions
IDModelComponents
11A-401-

CS

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Components

#1: Protein Arsenate reductase / Arsenical pump modifier


Mass: 15633.946 Da / Num. of mol.: 1 / Mutation: R60A
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (E. coli) / Production host: Escherichia coli BL21(DE3) (bacteria) / Strain (production host): BL21(DE3)
References: UniProt: P08692, arsenate reductase (glutathione/glutaredoxin)
#2: Chemical ChemComp-SO4 / SULFATE ION / Sulfate


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


Mass: 132.905 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Cs
#4: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 289 / 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: 2.91 Å3/Da / Density % sol: 57.7 %
Crystal growTemperature: 278 K / Method: vapor diffusion, hanging drop / pH: 4.8
Details: 50% saturated Cesium Sulfate, 100mM sodium acetate,5mM DTT, pH 4.80, VAPOR DIFFUSION, HANGING DROP, temperature 278K

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Data collection

DiffractionMean temperature: 93 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RU200 / Wavelength: 1.5418
DetectorType: RIGAKU RAXIS IV / Detector: IMAGE PLATE / Date: Oct 12, 2001 / Details: OSMIC MIRRORS
RadiationMonochromator: OSMIC MIRRORS / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 1.53→20 Å / Num. obs: 34198 / % possible obs: 86.7 % / Observed criterion σ(I): -3 / Redundancy: 20.2 % / Rmerge(I) obs: 0.114 / Rsym value: 0.114 / Net I/σ(I): 16.2
Reflection shellResolution: 1.53→1.586 Å / Redundancy: 5.25 % / Rmerge(I) obs: 0.5964 / Mean I/σ(I) obs: 1.529 / Rsym value: 0.5964 / % possible all: 42.3

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Processing

Software
NameClassification
SHELXL-97refinement
XTALVIEWrefinement
SHELXmodel building
X-GENdata reduction
X-GENdata scaling
SHELXphasing
RefinementMethod to determine structure: SINGLE WAVELENGTH METHOD USED TO DETERMINE THE STRUCTURE: FOURIER SYNTHESIS
Starting model: NATIVE STRUCTURE

Resolution: 1.54→20 Å / Num. parameters: 5812 / Num. restraintsaints: 4598 / Cross valid method: FREE R / σ(F): 0 / Stereochemistry target values: ENGH & HUBER
RfactorNum. reflection% reflectionSelection details
Rfree0.2297 1609 -RANDOM
Rwork0.1857 ---
all0.1859 32561 --
obs0.1857 32561 83.8 %-
Solvent computationSolvent model: MOEWS & KRETSINGER, J.MOL.BIOL.91(1973)201-228
Refine analyzeNum. disordered residues: 4 / Occupancy sum hydrogen: 0 / Occupancy sum non hydrogen: 1409.62
Refinement stepCycle: LAST / Resolution: 1.54→20 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1080 0 19 289 1388
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONs_bond_d0.009
X-RAY DIFFRACTIONs_angle_d0.026
X-RAY DIFFRACTIONs_similar_dist0
X-RAY DIFFRACTIONs_from_restr_planes0.0294
X-RAY DIFFRACTIONs_zero_chiral_vol0.048
X-RAY DIFFRACTIONs_non_zero_chiral_vol0.065
X-RAY DIFFRACTIONs_anti_bump_dis_restr0.015
X-RAY DIFFRACTIONs_rigid_bond_adp_cmpnt0
X-RAY DIFFRACTIONs_similar_adp_cmpnt0.067
X-RAY DIFFRACTIONs_approx_iso_adps0

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