Experiment: 2XPY

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP			TO OBTAIN DIFFRACTION QUALITY CRYSTALS, HANGING DROPS OF 2 UL OF PROTEIN (6 MG/ML) AND 1 UL OF MOTHER LIQUOR (0.1 M MMT BUFFER, PH 8, 12-14% PEG 6000) WERE ALLOWED TO EQUILIBRATE AGAINST THE MOTHER LIQUOR FOR 18-24 HOURS BEFORE THE DROPS WERE STREAK SEEDED FROM EARLIER CRYSTALS.

Crystal Properties
Matthews coefficient	Solvent content
1.95	37

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 159.556	α = 90
b = 159.556	β = 90
c = 76.832	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	CCD	MARRESEARCH	MULTILAYER MIRROR, CURVED TO FOCUS IN THE VERTICAL		M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	MAX II BEAMLINE I911-2		MAX II	I911-2

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	26	95.3	0.09	7.4	4.1		30000			43.62

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	2.75	68.8		0.47	1.6	3.6

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	PDB ENTRY 1HS6	2.73	26.005	0.01	28409	1432	93.87	0.1779	0.1747	0.2402

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]
4.949			4.949		-9.898

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	16.675
f_angle_d	1.148
f_chiral_restr	0.08
f_bond_d	0.008
f_plane_restr	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5122
Nucleic Acid Atoms
Solvent Atoms	114
Heterogen Atoms	27

Software

Software
Software Name	Purpose
PHENIX	refinement
MOSFLM	data reduction
SCALEPACK	data scaling
PHASER	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.