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- PDB-2f0l: Crystal structure of Staphylococcal nuclease mutant V23L/I72L -

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Basic information

Entry
Database: PDB / ID: 2f0l
TitleCrystal structure of Staphylococcal nuclease mutant V23L/I72L
ComponentsStaphylococcal nuclease
KeywordsHYDROLASE / DNA HYDROLASE / RNA HYDROLASE / ENDONUCLEASE / CALCIUM / SIGNAL
Function / homology
Function and homology information


micrococcal nuclease / : / nucleic acid binding / extracellular region / metal ion binding / membrane
Similarity search - Function
OB fold (Dihydrolipoamide Acetyltransferase, E2P) - #90 / Thermonuclease family signature 1. / 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) ...OB fold (Dihydrolipoamide Acetyltransferase, E2P) - #90 / Thermonuclease family signature 1. / 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 / MOLECULAR REPLACEMENT / Resolution: 1.9 Å
AuthorsLu, J.Z. / Sakon, J. / Stites, W.E.
CitationJournal: To be Published
Title: Hydrophobic core mutants of Staphylococcal nuclease
Authors: Lu, J.Z. / Sakon, J. / Stites, W.E.
History
DepositionNov 13, 2005Deposition site: RCSB / Processing site: RCSB
Revision 1.0Oct 24, 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 1.4Jul 24, 2019Group: Data collection / Refinement description / Category: software / Item: _software.classification / _software.name
Revision 1.5Oct 20, 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 1.6Feb 14, 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)16,8571
Polymers16,8571
Non-polymers00
Water1,17165
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)48.224, 48.224, 63.808
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 / E.C.3.1.31.1 / Thermonuclease / TNase / Micrococcal nuclease


Mass: 16857.357 Da / Num. of mol.: 1 / Mutation: V23L/I72L
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Staphylococcus aureus (bacteria) / Gene: nuc / Plasmid: pL13 / Production host: Escherichia coli (E. coli) / Strain (production host): AR120 / References: UniProt: P00644, micrococcal nuclease
#2: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 65 / 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: 2.1 Å3/Da / Density % sol: 44 %
Crystal growTemperature: 277 K / Method: vapor diffusion, hanging drop / pH: 7.5
Details: 50mM phosphate buffer, 45% MPD, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K

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Data collection

DiffractionMean temperature: 293 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU / Wavelength: 1.5418 Å
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
ReflectionResolution: 1.9→8 Å / Num. all: 10700 / Num. obs: 10700 / Observed criterion σ(I): 0

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Processing

Software
NameClassification
SHELXL-97refinement
XTALVIEWrefinement
SCALEPACKdata scaling
RefinementMethod to determine structure: MOLECULAR REPLACEMENT / Resolution: 1.9→8 Å / Num. parameters: 4629 / Num. restraintsaints: 4443 / Cross valid method: FREE R / σ(F): 0 / Stereochemistry target values: ENGH & HUBER
RfactorNum. reflection% reflectionSelection details
Rfree0.2636 563 5.5 %RANDOM
Rwork0.1857 ---
all0.1864 10700 --
obs0.18571 10700 93.8 %-
Refine analyzeNum. disordered residues: 2 / Occupancy sum hydrogen: 0 / Occupancy sum non hydrogen: 1148
Refinement stepCycle: LAST / Resolution: 1.9→8 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1091 0 0 65 1156
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_planes0.0264
X-RAY DIFFRACTIONs_zero_chiral_vol0.032
X-RAY DIFFRACTIONs_non_zero_chiral_vol0.045
X-RAY DIFFRACTIONs_anti_bump_dis_restr0.004
X-RAY DIFFRACTIONs_rigid_bond_adp_cmpnt0
X-RAY DIFFRACTIONs_similar_adp_cmpnt0.134
X-RAY DIFFRACTIONs_approx_iso_adps0

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