1SWR

CORE-STREPTAVIDIN MUTANT W120A IN COMPLEX WITH BIOTIN AT PH 7.5


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
17.5pH 7.5
Crystal Properties
Matthews coefficientSolvent content
2.3648

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 52.8α = 90
b = 99.9β = 112.7
c = 50.9γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray295AREA DETECTORSIEMENS1996-12-18M
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
12870.0412.8305641
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)
22.1740.32.8

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 REPLACEMENTRFREEPDB ENTRY 1SWE1.91030564307780.30.1880.1840.264EVERY 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
33353756
RMS Deviations
KeyRefinement Restraint Deviation
s_zero_chiral_vol0.096
s_non_zero_chiral_vol0.09
s_similar_adp_cmpnt0.081
s_angle_d0.025
s_from_restr_planes0.018
s_anti_bump_dis_restr0.014
s_bond_d0.006
s_similar_dist
s_rigid_bond_adp_cmpnt
s_approx_iso_adps
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms3485
Nucleic Acid Atoms
Solvent Atoms207
Heterogen Atoms64

Software

Software
Software NamePurpose
SHELXL-97model building
X-PLORmodel building
SHELXL-97refinement
X-PLORrefinement
SAINTdata reduction
SADABSdata scaling
SHELXL-97phasing
X-PLORphasing