Experiment: 4JXX

Crystal structure of E coli E. coli glutaminyl-tRNA synthetase bound to tRNA(Gln)(CUG) and ATP from novel cryostabilization conditions

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1GTR	PDB entry 1GTR

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7	290	0.4 w/v sodium citrate, 40 mM PIPES , 20 mM MgSO4, 20 mM b-mercaptoethanol , pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 290.0K

Crystal Properties
Matthews coefficient	Solvent content
3.54	65.28

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 93.66	α = 90
b = 234.28	β = 90
c = 113.02	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	NOIR-1		2012-01-06	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 4.2.2	1.0	ALS	4.2.2

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	2.3	41.1	99.2	0.066	12	7.3	55577	55132	1	1	50.7

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	2.3	2.38	97.4

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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 (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	FOURIER SYNTHESIS	THROUGHOUT	PDB entry 1GTR	2.3	41.1	55577	55132	5238		0.2286	0.2286	0.2255	0.2336	0.2579	0.2651	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	1.104
c_bond_d	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4295
Nucleic Acid Atoms	1511
Solvent Atoms	208
Heterogen Atoms	36

Software

Software
Software Name	Purpose
StructureStudio	data collection
CNS	refinement
d*TREK	data reduction
d*TREK	data scaling
CNS	phasing