6MQ4

GH5-4 broad specificity endoglucanase from Hungateiclostridium cellulolyticum


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP4.2293A solution of protein at 1mM was incubated with 5mM cellohexose for 4 hours at room temperature. The mixture was screened using a TTP Labtech Mosquito and MRC SD-2 plates 200 nL protein 200 nL reservoir, 50 microliter total reservoir. Crystals formed in condition B6, 40% ethanol, 10% PEG1000, 0.1M phosphate citrate buffer pH 4.2. Crystals were exposed to vapor from 45% ethanol for 30 seconds prior to plunge cooling in liquid nitrogen.
Crystal Properties
Matthews coefficientSolvent content
2.1342.21

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 70.85α = 90
b = 70.85β = 90
c = 57.61γ = 120
Symmetry
Space GroupP 31

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDMARMOSAIC 300 mm CCD2015-08-23MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONAPS BEAMLINE 21-ID-F0.97857APS21-ID-F

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)Rrim I (All)Rpim I (All)CC (Half)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
11.430.17699.980.053440.057720.021760.99922.1763716
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)Rrim I (All)Rpim I (All)CC (Half)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
11.41.451000.42280.45780.17460.9214.36.9

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTFREE R-VALUE2wab1.430.1761.9963716149099.990.12130.12090.1377
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
f_dihedral_angle_d14.083
f_angle_d1.174
f_chiral_restr0.085
f_bond_d0.01
f_plane_restr0.008
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms2736
Nucleic Acid Atoms
Solvent Atoms446
Heterogen Atoms81

Software

Software
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing