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


X-RAY DIFFRACTION

Starting Model(s)

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

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP7.2292Protein: 12.9 mg/ml, 10mM HEPES (pH 7.2), 1mM TCEP, 2% Glycerol, 5mM Imidazole; Screen: PEGs II (F8), 0.1M Sodium acetate, 25% (w/v) PEG 4000, 8% (w/v) Isopropanol; Cryo: Reservoir.
Crystal Properties
Matthews coefficientSolvent content
2.2244.6

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 75.407α = 90
b = 58.256β = 107.95
c = 121.23γ = 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)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
11.953099.80.20.20.0890.9848.85.872403-317.7
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)R-Sym I (Observed)Rpim I (All)CC (Half)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
11.951.9899.50.860.860.3840.4282.15.6

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 REPLACEMENTTHROUGHOUT1.9529.1368623376099.060.174240.172580.18380.203480.2222RANDOM21.565
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]
0.610.33-19.8519.24
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_3_deg5.735
r_long_range_B_refined3.996
r_long_range_B_other3.892
r_dihedral_angle_1_deg2.624
r_scangle_other1.669
r_dihedral_angle_2_deg1.656
r_angle_refined_deg1.463
r_mcangle_it1.278
r_mcangle_other1.278
r_scbond_it1.037
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_3_deg5.735
r_long_range_B_refined3.996
r_long_range_B_other3.892
r_dihedral_angle_1_deg2.624
r_scangle_other1.669
r_dihedral_angle_2_deg1.656
r_angle_refined_deg1.463
r_mcangle_it1.278
r_mcangle_other1.278
r_scbond_it1.037
r_scbond_other1.037
r_mcbond_it0.756
r_mcbond_other0.756
r_angle_other_deg0.507
r_chiral_restr0.082
r_gen_planes_refined0.013
r_gen_planes_other0.01
r_bond_refined_d0.003
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 Atoms8116
Nucleic Acid Atoms
Solvent Atoms604
Heterogen Atoms24

Software

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