ISDA: 9QRP

X-RAY DIFFRACTION

Crystallization Details

Method	pH	Temprature	Details
X-RAY DIFFRACTION	7.2	293	10 microliter hanging drops containing 25 mM Tris-maleate/NaOH buffer at pH 7.2,2.5 mM MgC12,20% saturated (V/V) ammonium sulphate, 1 mM NaN3, 2.6 mg/ml tRNA(ser) and 5.6 mg/ml seryl-tRNA synthetase (stoichiometric ratio of 1.5 tRNA molecules to one enzyme dimer), were equil- ibrated at room temperature against 32% saturated ammonium sulphate.

Unit Cell:

a: 121.040 Å b: 125.810 Å c: 117.620 Å α: 90.000° β: 90.000° γ: 90.000°

Symmetry:

Space Group: P 21 21 21

Crystal Properties:

Matthew's Coefficient: 3.55 Solvent Content: 65.35

Refinement Statistics

Diffraction ID	Structure Solution Method	Cross Validation Method	Resolution Limit (High)	Resolution Limit (Low)	Number of Reflections (Observed)	Number of Reflections (R-free)	Percent Reflections (Observed)	R-Work	R-Free	Mean Isotropic
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	2.70	19.99	45116	2321	90.51	0.1866	0.2296	40.46

Data Collection

Overall

Resolution Limit (High)	Resolution Limit (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym 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
2.7	20	90.7	0.069	?	10.5	3.2	?	45116	?	?	27.77

Highest Resolution Shell

#	Resolution Limits (Low)	Resolution Limits (High)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.7	2.82	48.6	?	?	?	?	?

Diffraction

Diffraction experiment

Crystal ID	Scattering Type	Data Collection Temprature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1		138 K			?

Radiation Source

Source	Type	Wavelength List	Synchrotron Site	Beamline
SYNCHROTRON	LURE BEAMLINE DW32	0.9	LURE	DW32

Software