2PTX

Crystal Structure of the T. brucei enolase complexed with sulphate in closed conformation

X-RAY DIFFRACTION

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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
2.41	49.03

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 74.773	α = 90
b = 111.175	β = 90
c = 108.983	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	2004-10-01	M	SINGLE WAVELENGTH

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

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	26.1	99.4	0.057	15.2	4.9	36178	35765	1	1	23.6

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	100		0.497	2.2	4.8	5019

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	26.06	34321	33961	4764	98.95	0.16824	0.16824	0.16624	0.20654	RANDOM	19.638

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	39.958
r_dihedral_angle_4_deg	16.909
r_dihedral_angle_3_deg	13.027
r_dihedral_angle_1_deg	6.745
r_scangle_it	2.557
r_scbond_it	1.608
r_angle_refined_deg	1.462
r_mcangle_it	0.868
r_mcbond_it	0.568
r_nbtor_refined	0.298
r_symmetry_vdw_refined	0.205
r_nbd_refined	0.193
r_symmetry_hbond_refined	0.19
r_xyhbond_nbd_refined	0.147
r_chiral_restr	0.089
r_bond_refined_d	0.012
r_gen_planes_refined	0.006
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3306
Nucleic Acid Atoms
Solvent Atoms	382
Heterogen Atoms	23

Software

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