1JXK

Role of ethe mobile loop in the mehanism of human salivary amylase


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP9298MPD, calcium chloride, pH 9.0, VAPOR DIFFUSION, HANGING DROP at 298K
Crystal Properties
Matthews coefficientSolvent content
2.2745.3

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 52.9α = 90
b = 75.737β = 90
c = 134.554γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray200IMAGE PLATERIGAKU RAXIS IVmirrors2000-10-10MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODERIGAKU1.5418

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
11.967.4298.310.0570.05721.93.539061384012216.857
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)
1.91.949990.0570.1558.6

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (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 DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUT1SMD1.967.423906138401430098.310.17610.176150.173460.19997RANDOM16.857
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]
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_3_deg17.794
r_dihedral_angle_1_deg4.249
r_scangle_it2.589
r_scbond_it1.635
r_angle_refined_deg1.32
r_mcangle_it1.121
r_mcbond_it0.594
r_xyhbond_nbd_refined0.215
r_xyhbond_nbd_other0.123
r_chiral_restr0.096
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_3_deg17.794
r_dihedral_angle_1_deg4.249
r_scangle_it2.589
r_scbond_it1.635
r_angle_refined_deg1.32
r_mcangle_it1.121
r_mcbond_it0.594
r_xyhbond_nbd_refined0.215
r_xyhbond_nbd_other0.123
r_chiral_restr0.096
r_bond_refined_d0.008
r_gen_planes_refined0.005
r_nbtor_refined0.005
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms3923
Nucleic Acid Atoms
Solvent Atoms323
Heterogen Atoms2

Software

Software
Software NamePurpose
SCALEPACKdata scaling
AMoREphasing
REFMACrefinement