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- PDB-1eyc: STRUCTURE OF S. NUCLEASE STABILIZING QUINTUPLE MUTANT T41I/S59A/P... -

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Basic information

Entry
Database: PDB / ID: 1eyc
TitleSTRUCTURE OF S. NUCLEASE STABILIZING QUINTUPLE MUTANT T41I/S59A/P117G/H124L/S128A
ComponentsSTAPHYLOCOCCAL NUCLEASEMicrococcal nuclease
KeywordsHYDROLASE
Function / homology
Function and homology information


endonuclease activity, active with either ribo- or deoxyribonucleic acids and producing 3'-phosphomonoesters / micrococcal nuclease / nucleic acid binding / extracellular region / membrane / metal ion binding
Similarity search - Function
Thermonuclease family signature 1. / OB fold (Dihydrolipoamide Acetyltransferase, E2P) - #90 / Thermonuclease active site / Thermonuclease family signature 2. / Staphylococcal nuclease (SNase-like), OB-fold / Staphylococcal nuclease homologue / Thermonuclease domain profile. / Staphylococcal nuclease homologues / SNase-like, OB-fold superfamily / OB fold (Dihydrolipoamide Acetyltransferase, E2P) ...Thermonuclease family signature 1. / OB fold (Dihydrolipoamide Acetyltransferase, E2P) - #90 / Thermonuclease active site / Thermonuclease family signature 2. / Staphylococcal nuclease (SNase-like), OB-fold / Staphylococcal nuclease homologue / Thermonuclease domain profile. / Staphylococcal nuclease homologues / SNase-like, OB-fold superfamily / OB fold (Dihydrolipoamide Acetyltransferase, E2P) / Beta Barrel / Mainly Beta
Similarity search - Domain/homology
Biological speciesStaphylococcus aureus (bacteria)
MethodX-RAY DIFFRACTION / AB INITIO / Resolution: 1.85 Å
AuthorsChen, J. / Lu, Z. / Sakon, J. / Stites, W.E.
CitationJournal: J.Mol.Biol. / Year: 2000
Title: Increasing the thermostability of staphylococcal nuclease: implications for the origin of protein thermostability.
Authors: Chen, J. / Lu, Z. / Sakon, J. / Stites, W.E.
History
DepositionMay 5, 2000Deposition site: RCSB / Processing site: RCSB
Revision 1.0Oct 18, 2000Provider: 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 / Category: database_2 / struct_ref_seq_dif
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_ref_seq_dif.details
Revision 1.4Feb 7, 2024Group: Data collection / Category: chem_comp_atom / chem_comp_bond

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: STAPHYLOCOCCAL NUCLEASE


Theoretical massNumber of molelcules
Total (without water)16,7581
Polymers16,7581
Non-polymers00
Water1,00956
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)49.305, 49.305, 63.660
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number76
Space group name H-MP41

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Components

#1: Protein STAPHYLOCOCCAL NUCLEASE / Micrococcal nuclease


Mass: 16758.332 Da / Num. of mol.: 1 / Mutation: T41I/S59A/P117G/H124L/S128A
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Staphylococcus aureus (bacteria) / Strain: FOGGI / Production host: Escherichia coli (E. coli) / References: UniProt: P00644, micrococcal nuclease
#2: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 56 / 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 Å3/Da / Density % sol: 46.71 %
Crystal growTemperature: 277 K / Method: vapor diffusion, hanging drop / pH: 8
Details: MPD, Sodium phosphate buffer, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 277K
Crystal grow
*PLUS
Details: MPD, Sodium phosphate buffer, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 277K
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-ID
140-60 %(v/v)MPD1reservoir
225 mMsodium phosphate1reservoir

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Data collection

DiffractionMean temperature: 297 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RUH3R / Wavelength: 1.5418
DetectorType: RIGAKU RAXIS IV / Detector: IMAGE PLATE
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
Reflection
*PLUS
Highest resolution: 1.85 Å / Lowest resolution: 8 Å / % possible obs: 92.9 %

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Processing

Software
NameClassification
SHELXmodel building
SHELXL-97refinement
DENZOdata reduction
SCALEPACKdata scaling
SHELXphasing
RefinementMethod to determine structure: AB INITIO / Resolution: 1.85→8 Å / Num. parameters: 4571 / Num. restraintsaints: 4435 / Cross valid method: FREE R / σ(F): 0 / Stereochemistry target values: ENGH AND HUBER
RfactorNum. reflection% reflectionSelection details
Rfree0.2503 630 -RANDOM
all0.1961 11983 --
obs--92.9 %-
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: 1133
Refinement stepCycle: LAST / Resolution: 1.85→8 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1084 0 0 56 1140
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONs_bond_d0.006
X-RAY DIFFRACTIONs_angle_d0.024
X-RAY DIFFRACTIONs_similar_dist0
X-RAY DIFFRACTIONs_from_restr_planes0.0255
X-RAY DIFFRACTIONs_zero_chiral_vol0.03
X-RAY DIFFRACTIONs_non_zero_chiral_vol0.041
X-RAY DIFFRACTIONs_anti_bump_dis_restr0.005
X-RAY DIFFRACTIONs_rigid_bond_adp_cmpnt0
X-RAY DIFFRACTIONs_similar_adp_cmpnt0.2
X-RAY DIFFRACTIONs_approx_iso_adps0
Software
*PLUS
Name: SHELXL-97 / Classification: refinement
Refinement
*PLUS
Num. reflection obs: 8958 / σ(I): 4 / Rfactor obs: 0.1674
Solvent computation
*PLUS
Displacement parameters
*PLUS
Biso mean: 49.58 Å2

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