3DIG

CRYSTAL STRUCTURE OF THE THERMOTOGA MARITIMA LYSINE RIBOSWITCH BOUND TO S-(2-aminoethyl)-L-cysteine

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.7	293	18% PEG 4000, 0.1M sodium citrate, 20% isopropanol, pH 5.7, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.71	54.61

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 54.441	α = 90
b = 78.941	β = 90
c = 142.855	γ = 90

Symmetry
Space Group	P 21 21 21

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 4		2008-03-18	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 24-ID-C	1.8987	APS	24-ID-C

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	20	94.4	0.112		5.2	15828	14942

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	62.8		0.36	2.5	3	976

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	MOLECULAR REPLACEMENT	THROUGHOUT	2.8	20	14932	14399	767	96.43	0.19858	0.19858	0.19721	0.22522	RANDOM	23.149

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]
0.47			-1.36		0.89

RMS Deviations
Key	Refinement Restraint Deviation
r_angle_refined_deg	1.302
r_scangle_it	0.706
r_scbond_it	0.458
r_mcangle_it	0.414
r_nbtor_refined	0.268
r_nbd_refined	0.17
r_symmetry_hbond_refined	0.163
r_mcbond_it	0.163
r_xyhbond_nbd_refined	0.155
r_symmetry_vdw_refined	0.138

RMS Deviations
Key	Refinement Restraint Deviation
r_angle_refined_deg	1.302
r_scangle_it	0.706
r_scbond_it	0.458
r_mcangle_it	0.414
r_nbtor_refined	0.268
r_nbd_refined	0.17
r_symmetry_hbond_refined	0.163
r_mcbond_it	0.163
r_xyhbond_nbd_refined	0.155
r_symmetry_vdw_refined	0.138
r_chiral_restr	0.067
r_metal_ion_refined	0.045
r_bond_refined_d	0.007
r_gen_planes_refined	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms
Nucleic Acid Atoms	3752
Solvent Atoms	28
Heterogen Atoms	29

Software

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

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), 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 R01GM157729.