4NML

2.60 Angstrom resolution crystal structure of putative ribose 5-phosphate isomerase from Toxoplasma gondii ME49 in complex with DL-Malic acid

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7	295	protein at 7.1 mg/mL in 10 mM Tris-HCl pH 8.3 500 mM NaCl 5 mM BME, crystallization The JCSG+ suite (F8 or #68): 2.1 M DL-Malic acid pH 7.0, cryo 1:1 (v/v) 50% sucrose and F8, VAPOR DIFFUSION, SITTING DROP, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
4.33	71.6

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 95.59	α = 90
b = 95.59	β = 90
c = 112.694	γ = 90

Symmetry
Space Group	P 41 2 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	CCD	MARMOSAIC 225 mm CCD	Be lenses	2013-10-31	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 21-ID-F	0.97872	APS	21-ID-F

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	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	2.6	30	100	0.094	44.9	14.2	16774	16774		-3	61.4

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.6	2.64	100		0.616	5.4	14.7	818

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	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	SAD	THROUGHOUT	2.6	29.53	15802	15802	842	99.84	0.16643	0.16449	0.20477	RANDOM	56.853

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]
0.9			0.9		-1.79

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.521
r_dihedral_angle_4_deg	17.819
r_dihedral_angle_3_deg	13.183
r_dihedral_angle_1_deg	3.346
r_angle_refined_deg	1.711
r_angle_other_deg	0.81
r_chiral_restr	0.088
r_bond_refined_d	0.012
r_gen_planes_refined	0.006
r_bond_other_d	0.001

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.521
r_dihedral_angle_4_deg	17.819
r_dihedral_angle_3_deg	13.183
r_dihedral_angle_1_deg	3.346
r_angle_refined_deg	1.711
r_angle_other_deg	0.81
r_chiral_restr	0.088
r_bond_refined_d	0.012
r_gen_planes_refined	0.006
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1866
Nucleic Acid Atoms
Solvent Atoms	71
Heterogen Atoms	11

Software

Software
Software Name	Purpose
Blu-Ice	data collection
HKL-3000	phasing
REFMAC	refinement
HKL-3000	data reduction
HKL-3000	data scaling

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.