4Q4Z | pdb_00004q4z

Thermus thermophilus RNA polymerase de novo transcription initiation complex

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.7	300	crystallization solution [100 mM Tris-HCl, 200 mM KCl, 50 mM MgCl2, 10 mM Spermine tetra HCl and 10% PEG 4000], pH 8.7, VAPOR DIFFUSION, HANGING DROP, temperature 300K

Crystal Properties
Matthews coefficient	Solvent content
3.1	60.38

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 184.487	α = 90
b = 102.159	β = 98.96
c = 294.719	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 270		2013-06-05	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	CHESS BEAMLINE F1	0.918	CHESS	F1

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	2.85	50	88.3			260182	111819	2	2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	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	2.9	29.781	1.39	260182	107568	1686	89.48	0.2559	0.2556	0.2561	0.2747	0.2706

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	14.536
f_angle_d	0.93
f_chiral_restr	0.066
f_bond_d	0.005
f_plane_restr	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	27740
Nucleic Acid Atoms	886
Solvent Atoms	56
Heterogen Atoms	65

Software

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