1WDQ

The role of an inner loop in the catalytic mechanism of soybean beta-amylase


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP5.4277ammonium sulfate, sodium acetate, 2-mercaptoethanol, EDTA, pH 5.4, VAPOR DIFFUSION, HANGING DROP, temperature 277K
Crystal Properties
Matthews coefficientSolvent content
2.0138.9

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 84.989α = 90
b = 84.989β = 90
c = 144.023γ = 120
Symmetry
Space GroupP 31 2 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray298CCDADSC QUANTUM 42003-03-14MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONSPRING-8 BEAMLINE BL38B10.71SPring-8BL38B1

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (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
11.125094.42297502168841
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
1.121.1658.7

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodResolution (High)Resolution (Low)Number Reflections (All)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (All)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONAB INITIOTHROUGHOUT1.2810144557135160762393.50.11730.13470.1736RANDOM
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
938274815.5
RMS Deviations
KeyRefinement Restraint Deviation
s_approx_iso_adps0.096
s_non_zero_chiral_vol0.087
s_anti_bump_dis_restr0.079
s_zero_chiral_vol0.075
s_similar_adp_cmpnt0.048
s_angle_d0.032
s_from_restr_planes0.0287
s_bond_d0.015
s_rigid_bond_adp_cmpnt0.005
s_similar_dist
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms3959
Nucleic Acid Atoms
Solvent Atoms810
Heterogen Atoms72

Software

Software
Software NamePurpose
SHELXmodel building
SHELXL-97refinement
HKL-2000data reduction
SCALEPACKdata scaling
CNSphasing