Experiment: 4GZY

Crystal structures of bacterial RNA Polymerase paused elongation complexes

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2O5I	PDB ENTRY 2O5I

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.2	295	3.5-6% PEG 8000, 0.1M MES pH 6.1-6.3, 0.3M LiCl, 10mM MgCl2, vapor diffusion, hanging drop, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
3.15	61

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 207.21	α = 90
b = 207.21	β = 90
c = 203.223	γ = 120

Symmetry
Space Group	P 31 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 315r		2011-01-30	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X29A	1.0750	NSLS	X29A

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	3.5	50	100	0.149	6.5	9.9	63554	63554	1	1

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	3.5	3.56	99.9			5.5

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	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	PDB ENTRY 2O5I	3.5054	49.77	1.33	63554	63330	3184	99.68	0.2661	0.2631	0.2653	0.3217	0.3245	117.3666

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	15.901
f_angle_d	0.95
f_chiral_restr	0.061
f_bond_d	0.005
f_plane_restr	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	23534
Nucleic Acid Atoms	863
Solvent Atoms
Heterogen Atoms	3

Software

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