1SWT

CORE-STREPTAVIDIN MUTANT D128A IN COMPLEX WITH BIOTIN AT PH 4.5


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1SWAPDB ENTRY 1SWA

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
14.5INCUBATED IN 2.5 M BIOTIN/HOH, COCRYSTALLIZED IN 52% MPD (PH 4.5)
Crystal Properties
Matthews coefficientSolvent content
2.2344.84

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 55.7α = 90
b = 84.8β = 90
c = 50γ = 90
Symmetry
Space GroupP 21 21 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray295AREA DETECTORSIEMENS1996-11-20MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODERIGAKU RU200

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
1250880.05473147161
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
122.1431

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 1SWA210147161471880.2140.2090.308EVERY 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
16751886.5
RMS Deviations
KeyRefinement Restraint Deviation
s_from_restr_planes0.166
s_non_zero_chiral_vol0.089
s_zero_chiral_vol0.087
s_similar_adp_cmpnt0.082
s_angle_d0.024
s_anti_bump_dis_restr0.021
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 Atoms1751
Nucleic Acid Atoms
Solvent Atoms104
Heterogen Atoms32

Software

Software
Software NamePurpose
AMoREphasing
SHELXL-97refinement
SADIEdata reduction
SAINTdata reduction
SADABSdata scaling
XPREPdata reduction