4J3C

Crystal structure of 16S ribosomal RNA methyltransferase RsmE

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	293	10% PEG3350, 0.1M HEPES, 0.2M L-Proline, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.37	48.02

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 96.085	α = 90
b = 152.082	β = 90
c = 38.995	γ = 90

Symmetry
Space Group	P 21 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	100	PIXEL	DECTRIS PILATUS 6M	mirrors	2013-01-24	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X25	0.9733	NSLS	X25

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	50	99.7	0.07	11.2	10.6	39489	39489			31.2

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	2.06	97.8		0.716		5.9	3175

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	SAD	THROUGHOUT	2	50	39281	37312	1969	99.2	0.325	0.24838	0.24639	0.2869	RANDOM	45.63

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]
0.6			-2.59		1.99

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.196
r_dihedral_angle_4_deg	17.611
r_dihedral_angle_3_deg	17.38
r_dihedral_angle_1_deg	6.115
r_scangle_it	3.846
r_scbond_it	2.374
r_angle_refined_deg	1.496
r_mcangle_it	1.4
r_mcbond_it	0.766
r_chiral_restr	0.099
r_bond_refined_d	0.014
r_gen_planes_refined	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3552
Nucleic Acid Atoms
Solvent Atoms	60
Heterogen Atoms

Software

Software
Software Name	Purpose
CBASS	data collection
SHELXS	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling