Experiment: 4WQS

Thermus thermophilus RNA polymerase backtracked complex

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.5	293	PEG-8000, calcium chloride, 1,6-hexanediol, Tris

Crystal Properties
Matthews coefficient	Solvent content
3.78	67.46

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 155.983	α = 90
b = 155.983	β = 90
c = 495	γ = 90

Symmetry
Space Group	P 41

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	RAYONIX MX225HE		2012-10-14	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SPRING-8 BEAMLINE BL41XU	1.0	SPring-8	BL41XU

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Sym 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	4.3	50	99.7	0.175	11.9	9.1

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	4.3	4.45	99.9		0.811	2.7	7.7

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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		THROUGHOUT	4.306	44.15	1.43	79319	3821	99.88	0.2825	0.2805	0.2837	0.3114	0.3137

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	20.413
f_angle_d	1.741
f_chiral_restr	0.118
f_plane_restr	0.011
f_bond_d	0.01

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	45694
Nucleic Acid Atoms	2468
Solvent Atoms
Heterogen Atoms	4

Software

Software
Software Name	Purpose
PHENIX	refinement
Coot	model building
HKL-2000	data reduction
HKL-2000	data scaling
CNS	phasing