1AR2

DISULFIDE-FREE IMMUNOGLOBULIN FRAGMENT


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION4.6277VAPOUR DIFFUSION AL 4 C FROM A PROTEIN SOLUTION CONTAINING 8 MG/ML IN 50 MM POTASSIUM PHOSPHATE BUFFER AL PH 7, USING 2 M AMMONIUM SULFATE IN 100 MM SODIUM ACETATE BUFFER, PH 4.6, vapor diffusion, temperature 277K
Crystal Properties
Matthews coefficientSolvent content
2.6754

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 52.8α = 90
b = 52.8β = 90
c = 158.2γ = 120
Symmetry
Space GroupP 61 2 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray277IMAGE PLATEMARRESEARCHBENT CRYSTAL MONOCHROMATOR1996-08-28M
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONEMBL/DESY, HAMBURG BEAMLINE BW7AEMBL/DESY, HamburgBW7A

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
12.875970.1040.08811.110.73549
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)
2.82.8597.80.3760.432.75

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (All)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (All)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTFREE R-VALUEPDB ENTRY 1REI2.8753528340970.280.25430.4152EVERY 10TH REFLECTION
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]
Coordinate Error
Structure Solution MethodRefinement High ResolutionRefinement Low Resolution
819857.5
RMS Deviations
KeyRefinement Restraint Deviation
s_non_zero_chiral_vol0.061
s_zero_chiral_vol0.053
s_from_restr_planes0.041
s_angle_d0.017
s_similar_adp_cmpnt0.016
s_anti_bump_dis_restr0.01
s_bond_d0.004
s_similar_dist
s_rigid_bond_adp_cmpnt
s_approx_iso_adps
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms840
Nucleic Acid Atoms
Solvent Atoms17
Heterogen Atoms

Software

Software
Software NamePurpose
SHELXL-97model building
SHELXL-97refinement
DENZOdata reduction
SCALEPACKdata scaling
SHELXL-97phasing