5IFB

Crystal structure of polymerase acid protein (PA) from Influenza A virus, WILSON-SMITH/1933 (H1N1) bound to follow on fragment EBSI-4719 5-chloro-2-(1H-imidazol-1-yl)aniline

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	4IUJ

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8.5	289	20 mg/mL protein against Morpheus screen condition E10 with 10% PEG 8000, 20% EG, 0.03 M each ethylene glycol, 0.1 M Trizma/bicine pH 8.5, crystal tracking ID 256486e10, unique puck ID lum0-1

Crystal Properties
Matthews coefficient	Solvent content
2.56	51.94

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 68.92	α = 90
b = 68.92	β = 90
c = 396.42	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	100	CCD	MARMOSAIC 300 mm CCD		2014-09-11	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	CLSI BEAMLINE 08ID-1	0.99985	CLSI	08ID-1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	CC (Half)	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	2.45	47.685	99.6	0.089	0.997	14.58	5.2		21735		-3	37.26

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	2.45	2.51	100		0.515	3.03

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation 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	NONE	4IUJ	2.45	47.685	1.36	21734	1074	99.6	0.1781	0.1752	0.2309	45.4789

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
f_dihedral_angle_d	12.454
f_angle_d	0.946
f_chiral_restr	0.047
f_bond_d	0.007
f_plane_restr	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3099
Nucleic Acid Atoms
Solvent Atoms	131
Heterogen Atoms	18

Software

Software
Software Name	Purpose
XSCALE	data scaling
PHENIX	refinement
PDB_EXTRACT	data extraction
XDS	data reduction
PHASER	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.