Experiment: 3KWV

Structural basis for the unfolding of anthrax lethal factor by protective antigen oligomers

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3HVD	PDB entry 3HVD

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.2	291	16% PEG 3000, 0.1M cacodylic acid, 0.2M magnesium chloride, 10 mM Tris-Cl, 75 mM sodium chloride, 10 mM adenosine-5'-triphosphate, pH 7.2, VAPOR DIFFUSION, HANGING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
3.11	60.5

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 178.381	α = 90
b = 178.381	β = 90
c = 240.363	γ = 90

Symmetry
Space Group	P 4 21 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	ADSC QUANTUM 315r		2009-02-08	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 8.3.1	1.11587	ALS	8.3.1

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	49.8	99.8	0.069	11.4	7.9	70642	65167	1	2

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)
	3.1	3.19	78		0.46	2.2	8

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 (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	PDB entry 3HVD	3.101	49.835	0.14	65165	1832	92.07	0.25	0.2491	0.2403	0.2811	0.271

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]
-3.7082			-3.7082		8.3746

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	11.097
f_angle_d	0.61
f_chiral_restr	0.042
f_bond_d	0.005
f_plane_restr	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	20337
Nucleic Acid Atoms
Solvent Atoms	4
Heterogen Atoms	8

Software

Software
Software Name	Purpose
HKL-2000	data collection
PHASER	phasing
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling