Crystal Structure of the Peptide-binding Protein NikA from Streptococcus agalactiae in Complex with Zinc, L-Histidine, Imidazole and Ethylene Glycol.


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 4D7R 

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP7.5292Protein: 12.9 mg/ml, 10mM HEPES (pH 7.2), 1mM TCEP, 2% Glycerol, 5mM Imidazole; Screen: Classics II (D8), 0.1M HEPES (pH 7.5), 25% (w/v) PEG 3350; Cryo: Reservoir.
Crystal Properties
Matthews coefficientSolvent content
2.2745.7

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 76.031α = 90
b = 58.31β = 107.33
c = 122.115γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100PIXELDECTRIS EIGER2 X 9M2024-10-15MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONNSLS-II BEAMLINE 17-ID-10.92020NSLS-II17-ID-1

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)R Sym 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
11.953095.40.1060.1060.1310.0760.9868.72.570920-323.6
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)R-Sym I (Observed)Rrim I (All)Rpim I (All)CC (Half)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
11.951.9894.10.5740.5740.7210.4320.6281.62.4

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-Work (Depositor)R-Work (DCC)R-Free (Depositor)R-Free (DCC)R-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUT1.9529.1667219366892.550.189620.186880.19970.239180.2502RANDOM28.466
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]
3.264.44-9.045.78
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_3_deg5.987
r_long_range_B_refined4.939
r_long_range_B_other4.895
r_dihedral_angle_1_deg2.767
r_scangle_other2.753
r_mcangle_it1.96
r_mcangle_other1.96
r_scbond_it1.721
r_scbond_other1.72
r_dihedral_angle_2_deg1.527
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_3_deg5.987
r_long_range_B_refined4.939
r_long_range_B_other4.895
r_dihedral_angle_1_deg2.767
r_scangle_other2.753
r_mcangle_it1.96
r_mcangle_other1.96
r_scbond_it1.721
r_scbond_other1.72
r_dihedral_angle_2_deg1.527
r_angle_refined_deg1.523
r_mcbond_it1.262
r_mcbond_other1.262
r_angle_other_deg0.515
r_chiral_restr0.083
r_gen_planes_refined0.015
r_gen_planes_other0.012
r_bond_refined_d0.004
r_bond_other_d0.001
r_dihedral_angle_4_deg
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_scangle_it
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms8147
Nucleic Acid Atoms
Solvent Atoms605
Heterogen Atoms38

Software

Software
Software NamePurpose
REFMACrefinement
HKL-3000data reduction
HKL-3000data scaling
PHASERphasing