2PRH

The structures of apo- and inhibitor bound human dihydroorotate dehydrogenase reveal conformational flexibility within the inhibitor binding site

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1D3G

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.8	298	0.1M acetate, 1.6-2.4M ammonium sulphate, 30% glycerol, pH 4.8, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
3.64	66.22

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 90.55	α = 90
b = 90.55	β = 90
c = 122.7	γ = 120

Symmetry
Space Group	P 32 2 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	IMAGE PLATE	MAR scanner 345 mm plate		2004-04-27	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	MAX II BEAMLINE I711	1.092	MAX II	I711

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	2.3	20	75	0.118	0.12	12	5.2	29077	29077	2	1	21.1

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	2.3	2.34	94		0.417	0.309	4.61	5.18	3134

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (I)	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	1D3G	2.4	19.36	2	23197	23195	1160	100	0.22	0.174	0.172	0.217	RANDOM	15.627

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]
0.3	0.15		0.3		-0.45

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.1
r_dihedral_angle_4_deg	18.417
r_dihedral_angle_3_deg	14.443
r_dihedral_angle_1_deg	5.768
r_scangle_it	2.359
r_scbond_it	1.416
r_angle_refined_deg	1.263
r_mcangle_it	0.808
r_mcbond_it	0.496
r_nbtor_refined	0.297

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.1
r_dihedral_angle_4_deg	18.417
r_dihedral_angle_3_deg	14.443
r_dihedral_angle_1_deg	5.768
r_scangle_it	2.359
r_scbond_it	1.416
r_angle_refined_deg	1.263
r_mcangle_it	0.808
r_mcbond_it	0.496
r_nbtor_refined	0.297
r_nbd_refined	0.213
r_symmetry_vdw_refined	0.213
r_xyhbond_nbd_refined	0.148
r_symmetry_hbond_refined	0.091
r_chiral_restr	0.08
r_bond_refined_d	0.01
r_gen_planes_refined	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2727
Nucleic Acid Atoms
Solvent Atoms	216
Heterogen Atoms	84

Software

Software
Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
MAR345dtb	data collection
XDS	data reduction
XSCALE	data scaling
CNS	phasing

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.