1KS8

The structure of Endoglucanase from termite, Nasutitermes takasagoensis, at pH 2.5.


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 3TF4PDB ENTRY 3TF4

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP2.5291Ammonium Sulfate, Sodium Citrate, pH 4.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K, pH 2.5
Crystal Properties
Matthews coefficientSolvent content
2.3748.15

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 89.71α = 90
b = 83.83β = 95.6
c = 60.68γ = 90
Symmetry
Space GroupC 1 2 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray120IMAGE PLATEMAC Science DIP-2030Kmirrors2000-06-01MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODERIGAKU RU2001.5418

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
11.43097.70.062229.11787831851171313.6
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)
1.41.4589.70.5432.7

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (All)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUTPDB ENTRY 3TF41.4308780085085850996.90.1770.191RANDOM15.8
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]
2.391.18-0.77-1.61
RMS Deviations
KeyRefinement Restraint Deviation
c_dihedral_angle_d20.7
c_scangle_it2.54
c_scbond_it1.82
c_mcangle_it1.3
c_angle_deg1.2
c_mcbond_it0.87
c_improper_angle_d0.75
c_bond_d0.004
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms3383
Nucleic Acid Atoms
Solvent Atoms729
Heterogen Atoms5

Software

Software
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
CNSrefinement
CNSphasing