Experiment: 3FU2

Cocrystal structure of a class-I preQ1 riboswitch

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7	296	25% PEG 550 MME, 50 mM CaCl2, 100 mM Hepes-KOH pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 296K

Crystal Properties
Matthews coefficient	Solvent content
2.31	46.86

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 78.208	α = 90
b = 78.208	β = 90
c = 85.22	γ = 120

Symmetry
Space Group	P 32 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		IMAGE PLATE	RIGAKU RAXIS IV++			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU	1.5418

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	2.85	30	96.8	0.126		11.3	7147	7147

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)
	2.85	2.95	68.3		0.46	3.4	9.2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	2.85	30	7122	7122	390		0.2144	0.2061	0.2669	0.2541	Random

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
c_angle_deg	1.32
c_bond_d	0.053

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms
Nucleic Acid Atoms	1988
Solvent Atoms	21
Heterogen Atoms	48

Software

Software
Software Name	Purpose
CrystalClear	data collection
PHASER	phasing
CNS	refinement
HKL-2000	data reduction
SCALEPACK	data scaling