Crystal structure of a sialic acid binding protein, R113K:G213Q:Q216N mutant, from Streptococcus pneumoniae bound to Neu5Ac


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 9RSI 

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP52930.1 M Sodium citrate, pH 5 3.2 M Ammonium sulphate
Crystal Properties
Matthews coefficientSolvent content
2.1643.13

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 79.359α = 90
b = 61.485β = 106.288
c = 89.296γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100PIXELDECTRIS EIGER2 XE 16M2024-11-22MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONDIAMOND BEAMLINE I040.9537DiamondI04

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)Rrim I (All)Rpim I (All)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
1267.03399.90.270.2920.1096.275591514.61
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)Rrim I (All)Rpim I (All)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
122.0497.21.2530.4651.47.2

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-VALUE2.00167.03355880196799.8210.2050.20380.21110.24430.249820.877
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]
-0.17-0.0230.0470.117
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_6_deg16.139
r_dihedral_angle_3_deg13.625
r_dihedral_angle_1_deg6.168
r_lrange_other5.583
r_lrange_it5.582
r_dihedral_angle_2_deg5.519
r_scangle_it4.523
r_scangle_other4.522
r_scbond_it2.84
r_scbond_other2.83
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_6_deg16.139
r_dihedral_angle_3_deg13.625
r_dihedral_angle_1_deg6.168
r_lrange_other5.583
r_lrange_it5.582
r_dihedral_angle_2_deg5.519
r_scangle_it4.523
r_scangle_other4.522
r_scbond_it2.84
r_scbond_other2.83
r_mcangle_it2.433
r_mcangle_other2.433
r_mcbond_it1.701
r_mcbond_other1.701
r_angle_refined_deg1.696
r_angle_other_deg0.586
r_symmetry_nbd_refined0.292
r_nbd_refined0.214
r_symmetry_nbd_other0.191
r_nbtor_refined0.184
r_symmetry_xyhbond_nbd_refined0.169
r_xyhbond_nbd_refined0.163
r_nbd_other0.161
r_chiral_restr0.083
r_symmetry_nbtor_other0.077
r_symmetry_xyhbond_nbd_other0.055
r_ncsr_local_group_10.052
r_bond_refined_d0.009
r_gen_planes_refined0.007
r_bond_other_d0.001
r_gen_planes_other0.001
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms6255
Nucleic Acid Atoms
Solvent Atoms549
Heterogen Atoms102

Software

Software
Software NamePurpose
REFMACrefinement
DIALSdata reduction
xia2data scaling
PHASERphasing