Crystal structure of GHdex dextranase (BT3087), E360A catalytic mutant with bound IMO3


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelOtherPreviously solved structure of BT3087 E360A apo used for MR

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP293Co-crystallisation where the protein was pre-incubated with 5mM dextran 1.5 before being dispensed into trays Condition: 0.5M Lithium chloride 1.6M Ammonium sulphate
Crystal Properties
Matthews coefficientSolvent content
2.6854.14

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 92.224α = 90
b = 92.224β = 90
c = 328.033γ = 90
Symmetry
Space GroupP 41 21 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100PIXELDECTRIS EIGER2 XE 16M2021-10-15MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONDIAMOND BEAMLINE I030.89842DiamondI03

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
12.247.031000.3190.3320.090.9967.724.873184
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)
2.22.251002.2252.3970.8710.5051.113.7

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (All)R-Work (Depositor)R-Work (DCC)R-Free (Depositor)R-Free (DCC)Mean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTFREE R-VALUE2.246.29473027360399.9470.2050.20170.20160.26170.261738.107
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]
1.1371.137-2.274
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_3_deg14.176
r_dihedral_angle_6_deg13.696
r_lrange_it11.009
r_scangle_it8.074
r_dihedral_angle_1_deg7.27
r_dihedral_angle_2_deg7.093
r_scbond_it6.004
r_mcangle_it4.925
r_mcbond_it3.658
r_angle_refined_deg1.885
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_3_deg14.176
r_dihedral_angle_6_deg13.696
r_lrange_it11.009
r_scangle_it8.074
r_dihedral_angle_1_deg7.27
r_dihedral_angle_2_deg7.093
r_scbond_it6.004
r_mcangle_it4.925
r_mcbond_it3.658
r_angle_refined_deg1.885
r_nbtor_refined0.312
r_symmetry_nbd_refined0.255
r_nbd_refined0.213
r_symmetry_xyhbond_nbd_refined0.176
r_xyhbond_nbd_refined0.146
r_chiral_restr0.124
r_ncsr_local_group_10.067
r_bond_refined_d0.008
r_gen_planes_refined0.008
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms9000
Nucleic Acid Atoms
Solvent Atoms466
Heterogen Atoms234

Software

Software
Software NamePurpose
REFMACrefinement
REFMACrefinement
Aimlessdata scaling
DIALSdata collection
MOLREPphasing
Cootmodel building