Experiment: 3ZTB

The bacterial stressosome: a modular system that has been adapted to control secondary messenger signaling

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2VY9	PDB ENTRY 2VY9

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		6.5		1 UL PROTEIN AND 1 UL CRYSTALLANT, 1 ML WELL, 20 % PEG 3350, 0.2 M NAI, 0.1 M BIS-TRIS, PH 6.5.

Crystal Properties
Matthews coefficient	Solvent content
2.77	56

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 50.537	α = 90
b = 60.976	β = 90
c = 88.954	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 315r		2010-04-24	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID29		ESRF	ID29

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	2.8	61	99.9	0.06	20.1	6.8		7170		2	42.86

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	2.8	3.52	99.7		0.19	8.7	6.5

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	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 2VY9	2.8	19.815	6990	330	97.87	0.2137	0.2105	0.2093	0.2732	0.2737	48.1

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]
6.0777			4.9255		-11.0031

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	18.148
f_angle_d	0.908
f_chiral_restr	0.05
f_bond_d	0.004
f_plane_restr	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1762
Nucleic Acid Atoms
Solvent Atoms	10
Heterogen Atoms	2

Software

Software
Software Name	Purpose
PHENIX	refinement
XDS	data reduction
SCALA	data scaling
PHASER	phasing