Experiment: 2P7V

Crystal structure of the Escherichia coli regulator of sigma 70, Rsd, in complex with sigma 70 domain 4

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5	277	0.2 M KCl, 0.05 M MgCl2, 0.05 M Tris-HCl, pH 7.5, and 10% PEG4000, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
3.28	62.46

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 84.111	α = 90
b = 84.111	β = 90
c = 84.219	γ = 120

Symmetry
Space Group	P 64

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray						M	SINGLE WAVELENGTH
2	1	x-ray						M	MAD
1,2	1

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X29A	1.1	NSLS	X29A
2	SYNCHROTRON	APS BEAMLINE 31-ID	0.9793, 0.9641	APS	31-ID

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.6	50	99.1			10405	10405

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	2.6	50	10405	10405	513	99.1	0.24	0.24	0.239	0.2556	0.273	Random	42.907

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]
0.158	-8.887		0.158		-0.315

RMS Deviations
Key	Refinement Restraint Deviation
c_angle_deg	1.328
c_bond_d	0.008

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1770
Nucleic Acid Atoms
Solvent Atoms	94
Heterogen Atoms	1

Software

Software
Software Name	Purpose
CNS	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection
HKL-2000	data reduction
SCALEPACK	data scaling
SHARP	phasing