1H3N

Leucyl-tRNA synthetase from Thermus thermophilus complexed with a sulphamoyl analogue of leucyl-adenylate

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		6.5		PROTEIN 10 MG/ML IN 50MM BIS-TRIS PROPANE BUFFER PH 6.0-6.5 2MM DTT, 20MM MGCL2, 1MM NAN3, 18% AMMONIUM SULPHATE EQUILBRIATED AGAINST 30-38% AMMONIUM SULPHATE IN 100MM BIS-TRIS PROPANE BUFFER PH 6.0-6.5. SEE REFERENCE 2

Crystal Properties
Matthews coefficient	Solvent content
3.5	64.4

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 102.41	α = 90
b = 155.59	β = 90
c = 176.3	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 CCD		1999-06-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-4		ESRF	ID14-4

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	20	90.4	0.077	7.4	4.1		88328			18.4

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	2	2.06	60.2		0.39	2	3.1

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	MAD	THROUGHOUT	2	18.63	88382	4402	93.2	0.205	0.205	0.231	RANDOM	30.7

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]
-4.79			8.33		-3.54

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	22.4
c_scangle_it	4.4
c_scbond_it	3.15
c_mcangle_it	2.3
c_mcbond_it	1.92
c_angle_deg	1.5
c_improper_angle_d	1.11
c_bond_d	0.015
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d_na
c_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6642
Nucleic Acid Atoms
Solvent Atoms	534
Heterogen Atoms	48

Software

Software
Software Name	Purpose
CNS	refinement
MOSFLM	data reduction
SCALA	data scaling
SOLVE	phasing