3MUT

Crystal Structure of the G20A/C92U mutant c-di-GMP riboswith bound to c-di-GMP

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6	298	25% PEG 550 MME, 5 mM MgSO4, 50 mM MES, pH 6.0, 300 mM NaCl. Streak seeding after 3-6 hours, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.15	42.79

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 49.69	α = 90
b = 45.43	β = 95.12
c = 78.93	γ = 90

Symmetry
Space Group	P 1 21 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	ADSC QUANTUM 315	Pt-coated mirror	2009-11-19	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X25	1.1	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	3	80	98	0.177	8.8	6.5	6668	6354			101.7

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)
	3	3.1	84.7		0.495	1.9	4.3	216

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	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	PDB entry 3IRW	3	49.49	6354	322	96.54	0.23435	0.23259	0.2679	RANDOM	85.96

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]
3.51		6.43	-6.38		4.02

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.437
r_dihedral_angle_3_deg	20.77
r_dihedral_angle_4_deg	14.213
r_dihedral_angle_1_deg	5.404
r_mcangle_it	2.299
r_scangle_it	2.218
r_mcbond_it	1.314
r_scbond_it	1.298
r_angle_refined_deg	1.171
r_chiral_restr	0.053
r_bond_refined_d	0.006
r_gen_planes_refined	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	734
Nucleic Acid Atoms	1983
Solvent Atoms	21
Heterogen Atoms	48

Software

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