2PTW

Crystal Structure of the T. brucei enolase complexed with sulphate, identification of a metal binding site IV

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	291	10 % (w/v) PEG1000, 0.01 M ZnSO4 or ZnCl2, and 0.1 M MES, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
2.4	48.74

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 73.617	α = 90
b = 111.259	β = 90
c = 109.969	γ = 90

Symmetry
Space Group	C 2 2 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	IMAGE PLATE	MAR scanner 345 mm plate	MIRRORS	2004-10-04	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU ULTRAX 18	1.54

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	1.9	26	99	0.058	17	3.2	36064	35703	1	1	23.4

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)
	1.9	2	96.7		0.542	3.9	3.2	5081

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1OEP	1.9	25.98	34101	33900	4812	99.41	0.21621	0.21621	0.2144	0.24968	RANDOM	20.502

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]
			0.01

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.691
r_dihedral_angle_4_deg	17.003
r_dihedral_angle_3_deg	15.557
r_dihedral_angle_1_deg	6.838
r_scangle_it	3.131
r_scbond_it	2.171
r_angle_refined_deg	1.672
r_mcangle_it	1.317
r_mcbond_it	0.936
r_nbtor_refined	0.301

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.691
r_dihedral_angle_4_deg	17.003
r_dihedral_angle_3_deg	15.557
r_dihedral_angle_1_deg	6.838
r_scangle_it	3.131
r_scbond_it	2.171
r_angle_refined_deg	1.672
r_mcangle_it	1.317
r_mcbond_it	0.936
r_nbtor_refined	0.301
r_symmetry_vdw_refined	0.276
r_symmetry_hbond_refined	0.224
r_nbd_refined	0.208
r_xyhbond_nbd_refined	0.176
r_chiral_restr	0.127
r_bond_refined_d	0.019
r_gen_planes_refined	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3072
Nucleic Acid Atoms
Solvent Atoms	308
Heterogen Atoms	19

Software

Software
Software Name	Purpose
REFMAC	refinement
MAR345dtb	data collection
MOSFLM	data reduction
SCALA	data scaling
MOLREP	phasing

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.