4A26

The crystal structure of Leishmania major N5,N10- methylenetetrahydrofolate dehydrogenase/cyclohydrolase

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1				20% PEG 3350, 0.2 M AMMONIUM ACETATE.

Crystal Properties
Matthews coefficient	Solvent content
2.8	56

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 117.22	α = 90
b = 220.08	β = 90
c = 56.31	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	CCD	ADSC QUANTUM 315r		2008-12-17	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I04		Diamond	I04

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	2.7	40	88.4	0.13	6.5	4.4		17715		2	60.457

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	2.7	2.85	90.7		0.49	2.8	4.4

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	PDB ENTRY 1B0A	2.7	40	16817	898	86.33	0.23362	0.23056	0.28998	RANDOM	48.422

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]
1.13			-3.33		2.2

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.596
r_dihedral_angle_3_deg	15.646
r_dihedral_angle_4_deg	14.767
r_dihedral_angle_1_deg	4.574
r_angle_refined_deg	0.871
r_angle_other_deg	0.769
r_scangle_it	0.755
r_scbond_it	0.428
r_mcangle_it	0.327
r_mcbond_it	0.173
r_chiral_restr	0.048
r_mcbond_other	0.023
r_bond_refined_d	0.005
r_gen_planes_refined	0.003
r_bond_other_d	0.001
r_gen_planes_other	0.001
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_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4376
Nucleic Acid Atoms
Solvent Atoms	22
Heterogen Atoms	1

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling
PHASER	phasing