3E7H

The crystal structure of the beta subunit of the DNA-directed RNA polymerase from Vibrio cholerae O1 biovar eltor

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.5	298	25% PEG3350, 0.1M Bis-tris, pH6.5, 0.2M NaCl , VAPOR DIFFUSION, SITTING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.67	54.01

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 65.035	α = 90
b = 65.035	β = 90
c = 115.981	γ = 90

Symmetry
Space Group	P 43 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray		CCD	ADSC QUANTUM 315	mirrors	2008-04-23	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 19-ID	0.9794	APS	19-ID

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	1.7	45.98	0.9996	0.081	50.5	18.5	26726	26715	2	2	21

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)
	1.7	1.744	0.995		0.727	2.58	17.5	2029

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	SAD	THROUGHOUT	1.7	45.98	26726	26715	1414	99.96	0.18301	0.18071	0.22906	RANDOM	20.758

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]
0.19			0.19		-0.38

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	27.569
r_dihedral_angle_4_deg	18.118
r_dihedral_angle_3_deg	12.598
r_dihedral_angle_1_deg	6.081
r_scangle_it	5.823
r_scbond_it	4.096
r_mcangle_it	2.3
r_mcbond_it	1.824
r_angle_refined_deg	1.471
r_angle_other_deg	0.909
r_mcbond_other	0.876
r_symmetry_hbond_refined	0.331
r_symmetry_vdw_other	0.272
r_symmetry_vdw_refined	0.23
r_nbd_refined	0.222
r_nbd_other	0.199
r_xyhbond_nbd_refined	0.196
r_nbtor_refined	0.169
r_nbtor_other	0.084
r_chiral_restr	0.079
r_bond_refined_d	0.015
r_gen_planes_refined	0.005
r_bond_other_d	0.002
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1595
Nucleic Acid Atoms
Solvent Atoms	263
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
SBC-Collect	data collection
HKL-3000	data reduction
HKL-3000	data scaling
HKL-3000	phasing