3CTT

Crystal complex of N-terminal Human Maltase-Glucoamylase with Casuarine


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 2QMJPDB entry 2QMJ

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP6.529320% PEG 3350, 0.2M sodium sulfate, 4% 1,1,1,3,3,3-hexafluoro-2-propanol, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Crystal Properties
Matthews coefficientSolvent content
2.6353.15

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 86.692α = 90
b = 109.131β = 90
c = 109.438γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC QUANTUM 42007-05-19MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONCHESS BEAMLINE F10.9175CHESSF1

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
12.12095.60.11811.96.358131
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)
12.12.1597.40.4324.965.53891

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 2QMJ2.115.6557768293294.590.2280.2250.278RANDOM22.542
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]
0.06-0.02-0.03
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg35.313
r_dihedral_angle_4_deg17.846
r_dihedral_angle_3_deg14.431
r_dihedral_angle_1_deg6.843
r_scangle_it3.275
r_scbond_it2.224
r_angle_refined_deg1.527
r_mcangle_it1.413
r_mcbond_it0.866
r_nbtor_refined0.313
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg35.313
r_dihedral_angle_4_deg17.846
r_dihedral_angle_3_deg14.431
r_dihedral_angle_1_deg6.843
r_scangle_it3.275
r_scbond_it2.224
r_angle_refined_deg1.527
r_mcangle_it1.413
r_mcbond_it0.866
r_nbtor_refined0.313
r_symmetry_vdw_refined0.214
r_nbd_refined0.213
r_xyhbond_nbd_refined0.164
r_symmetry_hbond_refined0.133
r_chiral_restr0.106
r_bond_refined_d0.014
r_gen_planes_refined0.006
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms6905
Nucleic Acid Atoms
Solvent Atoms352
Heterogen Atoms101

Software

Software
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PHASERphasing
REFMACrefinement
PDB_EXTRACTdata extraction
HKL-2000data collection