3ORF

Crystal Structure of Dihydropteridine Reductase from Dictyostelium discoideum

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	291	17% PEG 3350, 0.1M bis-tris, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
2.34	47.36

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 49.808	α = 90
b = 129.898	β = 99.99
c = 78.763	γ = 90

Symmetry
Space Group	P 1 21 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	CCD	ADSC QUANTUM 210		2008-04-07	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PAL/PLS BEAMLINE 4A	2.16	PAL/PLS	4A

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym 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	2.16	37	93.4	0.069	0.081		6.9	50235	46917			36.5

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.16	2.24	96.4		0.423	0.081		6.9	50235

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1DHR	2.16	36.96	50235	46917	2473	93.57	0.18771	0.18496	0.24014	RANDOM	40.939

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]
0.03		-0.01	-0.01		-0.02

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	39.678
r_dihedral_angle_3_deg	17.963
r_dihedral_angle_4_deg	15.341
r_dihedral_angle_1_deg	6.529
r_scangle_it	4.867
r_scbond_it	3.136
r_angle_refined_deg	1.926
r_mcangle_it	1.857
r_mcbond_it	1.074
r_chiral_restr	0.139
r_bond_refined_d	0.023
r_gen_planes_refined	0.009
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
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_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6908
Nucleic Acid Atoms
Solvent Atoms	145
Heterogen Atoms	176

Software

Software
Software Name	Purpose
HKL-2000	data collection
AMoRE	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling