Experiment: 4MGN

Co-crystal structure of the G. kaustophilus glyQS T box riboswitch Stem I in complex with tRNA

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	4JRC	PDB ENTRIES 4JRC and 4MGM
experimental model	PDB	4MGM	PDB ENTRIES 4JRC and 4MGM

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	hanging drop	7	291	80mM NaCl, 20mM MgCl2, 40mM sodium cacodylate, 12mM spermine, 10% 2-methyl-1,3 propanediol, pH 7.0, hanging drop, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
3.67	66.48

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 92.838	α = 90
b = 205.182	β = 90
c = 161.421	γ = 90

Symmetry
Space Group	C 2 2 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 315		2013-03-07	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 24-ID-E	0.979	APS	24-ID-E

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	3.2	50	98.8	0.16	4.2	6.9		26207			74.54

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	3.2	3.26	96.9		2.29	6.1	1289

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 ENTRIES 4JRC and 4MGM	3.2	43.292	1.33	25268	2512	97.85	0.2406	0.2364	0.2352	0.2783	0.2778	141.6037

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	11.951
f_angle_d	0.458
f_chiral_restr	0.019
f_plane_restr	0.002
f_bond_d	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms
Nucleic Acid Atoms	6832
Solvent Atoms
Heterogen Atoms	18

Software

Software
Software Name	Purpose
SCALEPACK	data scaling
PHENIX	refinement
PDB_EXTRACT	data extraction
ADSC	data collection
HKL-2000	data reduction
HKL-2000	data scaling
PHASER	phasing