1HQO

CRYSTAL STRUCTURE OF THE NITROGEN REGULATION FRAGMENT OF THE YEAST PRION PROTEIN URE2P

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	8.8	293	NaCl, Bicine, Tris-HCl, alpha-chymotrypsin, pH 8.8, VAPOR DIFFUSION, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.79	55.84

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 64.31	α = 90
b = 69.19	β = 90
c = 149.99	γ = 90

Symmetry
Space Group	P 21 21 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 4		2000-11-02	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X9B	0.9791, 0.9789, 0.9686	NSLS	X9B

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	2.3	20	97.6	0.048	15.4	5.7	29499	168715		-3	50.9

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)
	2.3	2.38	99.5		0.32			2941

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	2.3	20	2	30417	27024	1343	88.8	0.221	0.275	random	55.6

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]

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	22.5
c_scangle_it	4.2
c_mcangle_it	3.4
c_scbond_it	3
c_mcbond_it	2.1
c_angle_deg	1.63
c_improper_angle_d	0.94
c_bond_d	0.0118

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3664
Nucleic Acid Atoms
Solvent Atoms	204
Heterogen Atoms

Software

Software
Software Name	Purpose
SOLVE	phasing
SnB	phasing
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling
PHASES	phasing

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.