3H3K

Structure of A. acidocaldarius cellulase CelA in complex with cellotetraose


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 3GZKPDB ENTRY 3GZK

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP729350% MPD, 100mM Hepes, pH7, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Crystal Properties
Matthews coefficientSolvent content
2.2946.27

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 85.09α = 90
b = 129.3β = 90
c = 49.13γ = 90
Symmetry
Space GroupP 21 21 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC QUANTUM 315rkirkpatrick baez2008-10-31MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONSOLEIL BEAMLINE PROXIMA 10.98SOLEILPROXIMA 1

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
12.13597.50.0911.6323893158011
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)
2.12.2396.30.5792.44963

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 3GZK2.130.222999715781000.188050.186490.21727RANDOM23.041
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]
0.01
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg32.899
r_dihedral_angle_3_deg14.278
r_dihedral_angle_4_deg14.034
r_dihedral_angle_1_deg5.684
r_scangle_it1.945
r_scbond_it1.196
r_angle_refined_deg1.114
r_angle_other_deg1.005
r_mcangle_it0.997
r_mcbond_it0.581
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg32.899
r_dihedral_angle_3_deg14.278
r_dihedral_angle_4_deg14.034
r_dihedral_angle_1_deg5.684
r_scangle_it1.945
r_scbond_it1.196
r_angle_refined_deg1.114
r_angle_other_deg1.005
r_mcangle_it0.997
r_mcbond_it0.581
r_symmetry_vdw_other0.333
r_nbd_refined0.196
r_nbd_other0.184
r_nbtor_refined0.175
r_symmetry_hbond_refined0.157
r_xyhbond_nbd_refined0.135
r_symmetry_vdw_refined0.116
r_metal_ion_refined0.113
r_chiral_restr0.088
r_nbtor_other0.087
r_mcbond_other0.08
r_bond_refined_d0.008
r_gen_planes_refined0.003
r_bond_other_d0.001
r_gen_planes_other0.001
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms4086
Nucleic Acid Atoms
Solvent Atoms169
Heterogen Atoms75

Software

Software
Software NamePurpose
JDirectordata collection
PHASERphasing
REFMACrefinement
XDSdata reduction
XDSdata scaling