Experiment: 5FJC

SAM-I riboswitch bearing the H. marismortui Kt-7 variant C-2bU

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	4B5R	PDB ENTRY 4B5R

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7		40 MM NA-CACODYLATE (PH 7.0), 80 MM KCL, 40 MM BACL2, 12 MM SPERMINE-HCL, 12% (V/V) MPD.

Crystal Properties
Matthews coefficient	Solvent content
1.89	34.92

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 60.398	α = 90
b = 60.398	β = 90
c = 152.95	γ = 90

Symmetry
Space Group	P 43 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	173	PIXEL	DECTRIS PILATUS 6M	TOROIDAL MIRROR	2015-02-21	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID29		ESRF	ID29

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	1.71	41.13	99.7	0.05	20.6	9.6		31465		1.2	32.74

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	1.71	1.77	97		0.91	1.2	7.4

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	PDB ENTRY 4B5R	1.71	41.134	1.33	31391	2822	99.48	0.2028	0.2009	0.2113	0.2405	0.2529	41.4

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
f_dihedral_angle_d	15.628
f_angle_d	1.122
f_chiral_restr	0.044
f_plane_restr	0.008
f_bond_d	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms
Nucleic Acid Atoms	2037
Solvent Atoms	183
Heterogen Atoms	55

Software

Software
Software Name	Purpose
PHENIX	refinement
ESRF	data reduction
Aimless	data scaling
PHASER	phasing