X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
16PROTEIN WAS CRYSTALLIZED FROM 1.7 M LITHIUM SULFATE, AND 10 MM MAGNESIUM SULFATE IN 25 MM CITRATE BUFFER AT PH 6.0 THE PROTEIN SOLUTION CONTAINED 17 MG/ML R1 PROTEIN, 20-FOLD EXCESS OF A 20-RESIDUE PEPTIDE CORRESPONDING TO THE C-TERMINUS OF THE R2 SUBUNIT AND IS ESSENTIAL FOR CRYSTALLIZATION
Crystal Properties
Matthews coefficientSolvent content
2.2545

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 227.82α = 90
b = 227.82β = 90
c = 343.47γ = 120
Symmetry
Space GroupH 3 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray278IMAGE PLATEMARRESEARCHSEGMENTAL TOROIDAL MIRROR1995-06-22M
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONEMBL/DESY, HAMBURG BEAMLINE X11EMBL/DESY, HAMBURGX11

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
12.920960.0870.08715.63.377589-3
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)
2.93950.3380.3382.72.3

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodResolution (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 DIFFRACTIONRIGID BODYTHROUGHOUT2.92075509226596.10.220.210.245RANDOM
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]
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms17950
Nucleic Acid Atoms
Solvent Atoms312
Heterogen Atoms

Software

Software
Software NamePurpose
TNTrefinement
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
TNTphasing