8IAX

Crystal structure of Streptococcus pneumoniae pyruvate kinase in complex with phosphoenolpyruvate and fructose 1,6-bisphosphate

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
in silico model	AlphaFold

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.75	298	8%(w/v) PEG3350, 50mM Citric acid/Bis-Tris Propan(3.75:6.25) pH6.75, 10mM Na HEPES HCl pH7.5, 75mM NaCl, 10mM MgCl2, 50mM KCl, 5mM PEP, 10mM FBP

Crystal Properties
Matthews coefficient	Solvent content
2.66	53.8

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 221.061	α = 90
b = 86.644	β = 100.86
c = 258.148	γ = 90

Symmetry
Space Group	C 1 2 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	PIXEL	DECTRIS EIGER X 16M	Main beamline optics is a double-crystal monochromator and a horizontal focusing mirror.	2023-01-21	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SPRING-8 BEAMLINE BL44XU	0.900	SPring-8	BL44XU

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	CC (Half)	Net I Over Average Sigma (I)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1	1.8	48.37	99.6	0.063	0.068	0.9990000000000001	14.83	6.99		442679

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.8	1.91			1.0290000000000001	1.11	0.8009999999999999

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1.8	48.37	420531	22134	99.59	0.18448	0.18253	0.22121	RANDOM	39.959

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]
-0.89		0.75	-0.55		1.08

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.982
r_dihedral_angle_4_deg	18.681
r_dihedral_angle_3_deg	15.851
r_long_range_B_refined	8.66
r_long_range_B_other	8.523
r_scangle_other	6.91
r_dihedral_angle_1_deg	6.748
r_scbond_other	4.759
r_scbond_it	4.758
r_mcangle_it	4.401
r_mcangle_other	4.401
r_mcbond_it	3.485
r_mcbond_other	3.484
r_angle_other_deg	2.356
r_angle_refined_deg	1.762
r_chiral_restr	0.084
r_bond_other_d	0.036
r_gen_planes_other	0.014
r_bond_refined_d	0.011
r_gen_planes_refined	0.009
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 Atoms	Number
Protein Atoms	30720
Nucleic Acid Atoms
Solvent Atoms	2689
Heterogen Atoms	256

Software

Software
Software Name	Purpose
REFMAC	refinement
XDS	data scaling
XDS	data reduction
MOLREP	phasing