3AJ7

Crystal Structure of isomaltase from Saccharomyces cerevisiae


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP7.328819% PEG 3350, 0.05N HEPES, 0.2M lithium acetete, pH 7.3, VAPOR DIFFUSION, HANGING DROP, temperature 288K
Crystal Properties
Matthews coefficientSolvent content
2.4850.41

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 95.516α = 90
b = 115.538β = 91.05
c = 61.756γ = 90
Symmetry
Space GroupC 1 2 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC QUANTUM 315r2010-02-22MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONPHOTON FACTORY BEAMLINE BL-5A1.0000Photon FactoryBL-5A

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
11.35095.10.038344.11637441557212
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)
1.31.3293.10.1448.44.17607

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUTPDB ENTRY 3A471.318.7147878783795.10.173110.172430.18607RANDOM11.731
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_2_deg34.865
r_dihedral_angle_4_deg17.625
r_dihedral_angle_3_deg11.349
r_dihedral_angle_1_deg5.854
r_scangle_it2.106
r_angle_refined_deg1.397
r_scbond_it1.34
r_mcangle_it0.891
r_mcbond_it0.532
r_nbtor_refined0.312
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg34.865
r_dihedral_angle_4_deg17.625
r_dihedral_angle_3_deg11.349
r_dihedral_angle_1_deg5.854
r_scangle_it2.106
r_angle_refined_deg1.397
r_scbond_it1.34
r_mcangle_it0.891
r_mcbond_it0.532
r_nbtor_refined0.312
r_nbd_refined0.192
r_symmetry_vdw_refined0.151
r_metal_ion_refined0.103
r_chiral_restr0.084
r_xyhbond_nbd_refined0.08
r_symmetry_hbond_refined0.049
r_bond_refined_d0.007
r_gen_planes_refined0.005
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms4835
Nucleic Acid Atoms
Solvent Atoms608
Heterogen Atoms1

Software

Software
Software NamePurpose
HKL-2000data collection
MOLREPphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling