1NM9

Crystal structure of recombinant human salivary amylase mutant W58A


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP9323MPD, Calcium chloride, pH 9.0, VAPOR DIFFUSION, HANGING DROP, temperature 323K
Crystal Properties
Matthews coefficientSolvent content
2.1742.85

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 51.946α = 90
b = 74.06β = 90
c = 134.508γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100IMAGE PLATERIGAKU RAXIS IVmirrors2002-09-01MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODERIGAKU RU2001.5418

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
12.142.699.70.06919.163110423.7
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
2.12.1599.7

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 REPLACEMENTTHROUGHOUTpdb entry 1jxj2.142.643110429481156499.470.16170.16170.160.19554RANDOM23.207
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]
-0.010.01
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_1_deg6.112
r_scangle_it2.228
r_scbond_it1.401
r_angle_refined_deg1.171
r_mcangle_it0.985
r_mcbond_it0.515
r_nbd_refined0.196
r_symmetry_vdw_refined0.191
r_symmetry_hbond_refined0.135
r_xyhbond_nbd_refined0.114
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_1_deg6.112
r_scangle_it2.228
r_scbond_it1.401
r_angle_refined_deg1.171
r_mcangle_it0.985
r_mcbond_it0.515
r_nbd_refined0.196
r_symmetry_vdw_refined0.191
r_symmetry_hbond_refined0.135
r_xyhbond_nbd_refined0.114
r_chiral_restr0.084
r_bond_refined_d0.009
r_gen_planes_refined0.004
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms3937
Nucleic Acid Atoms
Solvent Atoms255
Heterogen Atoms68

Software

Software
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing