4XVG

Crystal structure of Alkylhydroperoxide Reductase Subunit AhpF from Escherichia coli

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7	291	0.2 M Ammonium citrate tribasic, pH 7.0 20 % w/v Polyethylene glycol 3350

Crystal Properties
Matthews coefficient	Solvent content
2.58	52.4

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 107.04	α = 90
b = 58.625	β = 103.52
c = 94.941	γ = 90

Symmetry
Space Group	C 1 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	ADSC QUANTUM 315r		2013-05-04	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRF BEAMLINE BL17U	1.0	SSRF	BL17U

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	2.2	50	97.6	0.123	20.7	3.7	28666	28666

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	2.2	2.24	97.3		0.512	4.69	3.8

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	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	PDB code 1HYU	2.2	46.155	1.34	28657	1467	97.29	0.1804	0.1779	0.2253	random

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]
-5.0813		-2.5115	-5.5598		10.641

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	15.814
f_angle_d	1.035
f_chiral_restr	0.069
f_bond_d	0.008
f_plane_restr	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3919
Nucleic Acid Atoms
Solvent Atoms	250
Heterogen Atoms	53

Software

Software
Software Name	Purpose
PHENIX	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
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 R01GM133198.