3R9X

Crystal structure of Era in complex with MgGDPNP, nucleotides 1506-1542 of 16S ribosomal RNA, and KsgA

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	5	292	0.1M sodium acetate, 20% (v/v) MPD, pH 5.0, VAPOR DIFFUSION, SITTING DROP, temperature 292K

Crystal Properties
Matthews coefficient	Solvent content
3.24	62

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 195.502	α = 90
b = 68.094	β = 100.62
c = 73.587	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	MARMOSAIC 225 mm CCD	mirrors	2008-10-29	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 22-BM	1.0	APS	22-BM

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	2.8	30	98.4	0.097	9.4	4.8	23217	23217	-6	-3	56.8

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	2.8	2.9	91		0.614	1.69	3.2	2114

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation 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	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	3IEV, 3FTF	2.8	28.686	0.09	22561	22561	975	95.44	0.1735	0.171	0.2255	random	75.835

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]
4.9656		-7.4092	-8.1605		-0.7229

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	22.35
f_angle_d	1.24
f_chiral_restr	0.074
f_bond_d	0.007
f_plane_restr	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4284
Nucleic Acid Atoms	744
Solvent Atoms	83
Heterogen Atoms	57

Software

Software
Software Name	Purpose
SCALEPACK	data scaling
PHASER	phasing
PHENIX	refinement
PDB_EXTRACT	data extraction
MAR345dtb	data collection
HKL-2000	data reduction

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.