220L

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 0.1M NA2PO4 PH 6.6, 0.55 M NACL WAS DILUTED 1/2 WITH A WELL SOLUTION CONTAINING 1.8-2.2M NA/KPO4 PH 6.3-7.1., pH 7.0, vapor diffusion - hanging drop, temperature 277K
Crystal Properties
Matthews coefficientSolvent content
2.856.1

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 60.9α = 90
b = 60.9β = 90
c = 97.2γ = 120
Symmetry
Space GroupP 32 2 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray298AREA DETECTORXUONG-HAMLIN MULTIWIREGRAPHITE MONOCHROMATOR1991-11-26M
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
11.8520720.03334.1
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)
1.851.871.850.22.1

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 LYSOZYME1.85101374613746720.149
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_it5.99
t_angle_deg2.1
t_nbd0.049
t_bond_d0.015
t_gen_planes0.014
t_trig_c_planes0.008
t_dihedral_angle_d
t_incorr_chiral_ct
t_pseud_angle
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1289
Nucleic Acid Atoms
Solvent Atoms126
Heterogen Atoms2

Software

Software
Software NamePurpose
TNTrefinement
SDMSdata reduction
SDMSdata scaling
TNTphasing