3RSP

STRUCTURE OF THE P93G VARIANT OF RIBONUCLEASE A


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP66UL DROPS COMPOSED OF 15MG/ML PROTEIN,50MM SODIUM ACETATE AT PH 6.0, 15% SATURATED AMMONIUM SULFATE AND 25% SATURATED SODIUM CHLORIDE WERE SUSPENDED OVER 0.5ML WELLS CONTAINING 100MM SODIUM ACETATE, PH 6.0, 30% SATURATED AMMONIUM SULFATE AND 50% SATURATED SODIUM CHLORIDE. TEMPERATURE: 20C., vapor diffusion - hanging drop
Crystal Properties
Matthews coefficientSolvent content
3.0260

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 65.79α = 90
b = 65.79β = 90
c = 66.12γ = 120
Symmetry
Space GroupP 32 2 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray277AREA DETECTORSIEMENSLONG MIRRORS1997-04-11M
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODERIGAKU RUH2R

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (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
11.730930.0280.028202.622780
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)R-Sym I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
1.71.8930.150.1532

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 DIFFRACTIONMOLECULAR REPLACEMENTPDB ENTRY 1RPH1.7301862118621930.17
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_dihedral_angle_d17.579
t_angle_deg2.504
t_it1
t_nbd0.034
t_bond_d0.011
t_gen_planes0.01
t_trig_c_planes0.005
t_incorr_chiral_ct
t_pseud_angle
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms977
Nucleic Acid Atoms
Solvent Atoms129
Heterogen Atoms2

Software

Software
Software NamePurpose
XDSdata scaling
XCALIBREdata reduction
AMoREphasing
TNTrefinement
XDSdata reduction
XCALIBREdata scaling