2QNO

Crystal Structure of the Mutant E55Q of the Cellulase CEL48F in Complex with a Thio-Oligosaccharide


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1FCEPDB ENTRY 1FCE

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP7.529850 mM Sodium-HEPES, 8 % w/v PEG 4000, 20 mM Calcium chloride, 8 mM Thio-oligosaccharide IG10, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Crystal Properties
Matthews coefficientSolvent content
2.2344.77

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 61.24α = 90
b = 84.72β = 90
c = 121.74γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray288IMAGE PLATEMAR scanner 345 mm plate1998-10-19MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONEMBL/DESY, HAMBURG BEAMLINE X110.91EMBL/DESY, HAMBURGX11

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (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
1229.30395.20.0786.73.94155341188316.4
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R-Sym I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
22.0595.20.199933.32761

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 1FCE229.30341164209694.520.140.1370.182RANDOM16.977
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]
0.1-0.690.59
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg36.849
r_dihedral_angle_4_deg14.238
r_dihedral_angle_3_deg13.191
r_dihedral_angle_1_deg6.047
r_scangle_it3.406
r_scbond_it2.331
r_mcangle_it1.47
r_angle_refined_deg1.334
r_mcbond_it0.946
r_nbtor_refined0.31
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg36.849
r_dihedral_angle_4_deg14.238
r_dihedral_angle_3_deg13.191
r_dihedral_angle_1_deg6.047
r_scangle_it3.406
r_scbond_it2.331
r_mcangle_it1.47
r_angle_refined_deg1.334
r_mcbond_it0.946
r_nbtor_refined0.31
r_nbd_refined0.193
r_symmetry_vdw_refined0.166
r_symmetry_hbond_refined0.153
r_xyhbond_nbd_refined0.134
r_chiral_restr0.097
r_metal_ion_refined0.071
r_bond_refined_d0.013
r_gen_planes_refined0.006
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms5071
Nucleic Acid Atoms
Solvent Atoms412
Heterogen Atoms101

Software

Software
Software NamePurpose
SCALAdata scaling
REFMACrefinement
PDB_EXTRACTdata extraction
MAR345dtbdata collection
DENZOdata reduction
AMoREphasing