1FB1

CRYSTAL STRUCTURE OF HUMAN GTP CYCLOHYDROLASE I

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	298	ammonium sulphate, isopropanol, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 298.0K

Crystal Properties
Matthews coefficient	Solvent content
3.35	63.28

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 115.11	α = 90
b = 115.11	β = 90
c = 387.31	γ = 120

Symmetry
Space Group	P 65 2 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	298	IMAGE PLATE	MARRESEARCH			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	MPG/DESY, HAMBURG BEAMLINE BW6		MPG/DESY, HAMBURG	BW6

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	3.1	14.97	84.5	0.165			276288	25288		2

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	3.1	3.29	41.9

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (I)	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		THROUGHOUT	3.1	14.97	2	276838	23825	2358	84.2	0.204	0.204	0.293	RANDOM	93.9

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]
15.96	16.8		15.96		-31.92

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	23.8
c_angle_deg	1.6
c_improper_angle_d	0.94
c_bond_d	0.011

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7725
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	25

Software

Software
Software Name	Purpose
MOLREP	phasing
CNS	refinement
MOSFLM	data reduction
CCP4	data scaling

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.