2F2Q

High resolution crystal structure of T4 lysozyme mutant L20R63/A liganded to guanidinium ion


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1T8APDB ENTRY 1T8A

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
16.52770.5 mM protein, 1.8 M MIXED POTASSIUM AND SODIUM PHOSPHATE, 0.2 M GUANIDINIUM CHLORIDE, PH 6.5, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 277K, pH 6.50
Crystal Properties
Matthews coefficientSolvent content
2.6453

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 60.712α = 90
b = 60.712β = 90
c = 95.352γ = 120
Symmetry
Space GroupP 32 2 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSCKOHZU: Double Crystal Si(111)2005-05-26MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONALS BEAMLINE 8.2.1ALS8.2.1

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Sym I (Observed)Net I Over Average Sigma (I)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
11.4530900.077273674318.7
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R-Sym I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
1.451.5890.2283.6

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUTPDB ENTRY 1T8A1.4530323221618900.20.20.223RANDOM22.4
Temperature Factor Modeling
Anisotropic B[1][1]Anisotropic B[1][2]Anisotropic B[1][3]Anisotropic B[2][2]Anisotropic B[2][3]Anisotropic B[3][3]
0.481.220.48-0.96
RMS Deviations
KeyRefinement Restraint Deviation
c_dihedral_angle_d19.2
c_scangle_it5.54
c_scbond_it4.21
c_mcangle_it3
c_mcbond_it2.13
c_angle_deg1.5
c_improper_angle_d1.07
c_bond_d0.013
c_bond_d_na
c_bond_d_prot
RMS Deviations
KeyRefinement Restraint Deviation
c_dihedral_angle_d19.2
c_scangle_it5.54
c_scbond_it4.21
c_mcangle_it3
c_mcbond_it2.13
c_angle_deg1.5
c_improper_angle_d1.07
c_bond_d0.013
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d_na
c_improper_angle_d_prot
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1414
Nucleic Acid Atoms
Solvent Atoms181
Heterogen Atoms13

Software

Software
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
CNSrefinement
CNSphasing