6MQ4

GH5-4 broad specificity endoglucanase from Hungateiclostridium cellulolyticum


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 2WAB 

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