3BJU

Crystal Structure of tetrameric form of human lysyl-tRNA synthetase

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		5.75	277	12% PEG8000, 16% Glycerol, 0.08M Na Cacodylate, 0.16M Ca(OAc)2, pH 5.75, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
3.01	59.13

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 152.013	α = 90
b = 152.013	β = 90
c = 108.838	γ = 120

Symmetry
Space Group	P 32

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	MARMOSAIC 300 mm CCD	Si(111) Double Crystal Monochrometer. Adjustable focusing mirrors in K-B geometry.	2007-10-14	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 23-ID-B		APS	23-ID-B

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	2.1	40	98	0.097	5.7	1.6		160180

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)
	2.1	2.18	98.2		0.53	0.87	1.6

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	MOLECULAR REPLACEMENT	THROUGHOUT	PDB entry 1E24	2.31	25	114762	5985	98	0.197	0.194	0.252	RANDOM	28.75

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]
-1.21	-0.61		-1.21		1.82

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.339
r_dihedral_angle_4_deg	17.454
r_dihedral_angle_3_deg	16.43
r_dihedral_angle_1_deg	5.939
r_scangle_it	2.864
r_scbond_it	1.83
r_angle_refined_deg	1.313
r_mcangle_it	1.227
r_mcbond_it	0.759
r_nbtor_refined	0.323
r_symmetry_vdw_refined	0.257
r_nbd_refined	0.228
r_xyhbond_nbd_refined	0.223
r_symmetry_hbond_refined	0.207
r_metal_ion_refined	0.167
r_chiral_restr	0.093
r_bond_refined_d	0.011
r_gen_planes_refined	0.005
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	16201
Nucleic Acid Atoms
Solvent Atoms	1002
Heterogen Atoms	176

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
MOLREP	phasing
DM	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction