229L

GENERATING LIGAND BINDING SITES IN T4 LYSOZYME USING DEFICIENCY-CREATING SUBSTITUTIONS


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelOtherCYS-FREE WILD TYPE LYSOZYME

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP7277CRYSTALS GROWN IN HANGING DROPS AT 4 DEGREES C. PROTEIN 10-20 MG/ML IN A BUFFER CONTAINING 25 MM HEPES PH 7.5 WAS DILUTED 1/2 WITH A WELL SOLUTION CONTAINING 0.1 M NACL, 0.1 M KPO4,20% W/V PEG 3350,PH 7.1, 0.25 M GUAD-HCL (LIGAND)., pH 7.0, vapor diffusion - hanging drop, temperature 277K
Crystal Properties
Matthews coefficientSolvent content
2.7955.86

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 60.6α = 90
b = 60.6β = 90
c = 97.5γ = 120
Symmetry
Space GroupP 32 2 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray298AREA DETECTORXUONG-HAMLIN MULTIWIREGRAPHITE MONOCHROMATOR1993-07-20M
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODERIGAKU RUH2R

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge 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
11.810920.03318659
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
1.80.22

Refinement

Statistics
Diffraction IDStructure Solution MethodStarting modelResolution (High)Resolution (Low)Number Reflections (All)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTIONDIFFERENCE FOURIERCYS-FREE WILD TYPE LYSOZYME1.8301865918659920.16
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]
RMS Deviations
KeyRefinement Restraint Deviation
t_angle_deg2.1
t_nbd0.051
t_bond_d0.014
t_gen_planes0.013
t_trig_c_planes0.008
t_dihedral_angle_d
t_incorr_chiral_ct
t_pseud_angle
t_it
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1286
Nucleic Acid Atoms
Solvent Atoms131
Heterogen Atoms6

Software

Software
Software NamePurpose
TNTrefinement
SDMSdata reduction
SDMSdata scaling
TNTphasing