2HQT

Crystal structures of the interacting domains from yeast glutamyl-tRNA synthetase and tRNA aminoacylation and nuclear export cofactor Arc1p reveal a novel function for an old fold

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8	293	35 % PEG3350, 100 mM LiSO4, 50 mM Tris-acetate pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.21	44.32

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 222.317	α = 90
b = 89.463	β = 99.39
c = 126.792	γ = 90

Symmetry
Space Group	C 1 2 1

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 225 mm CCD		2004-12-17	M	MAD
2	1	x-ray	100	CCD	MARMOSAIC 225 mm CCD		2005-04-29	M	SINGLE WAVELENGTH
1,2	1

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID23-1	0.97925, 0.97945, 0.95375	ESRF	ID23-1
2	SYNCHROTRON	SLS BEAMLINE X06SA	0.95372	SLS	X06SA

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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
1,2	1.9	50	97	0.041	18.5	4.3		187177	1	1

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1,2	1.9	2	96.5		0.44	3.77	4	26403

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	MAD	THROUGHOUT	1.9	50	183275	177795	9383	97.01	0.21193	0.21193	0.20925	0.22	0.26239	0.27	RANDOM	35.613

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]
1.18		-0.25	0.75		-2.01

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	42.008
r_dihedral_angle_4_deg	16.808
r_dihedral_angle_3_deg	16.16
r_dihedral_angle_1_deg	7.054
r_scangle_it	3.088
r_scbond_it	2.251
r_angle_refined_deg	1.48
r_mcangle_it	1.221
r_mcbond_it	0.978
r_angle_other_deg	0.958
r_symmetry_vdw_refined	0.35
r_nbd_refined	0.238
r_symmetry_vdw_other	0.231
r_mcbond_other	0.218
r_symmetry_hbond_refined	0.217
r_nbd_other	0.192
r_nbtor_refined	0.19
r_xyhbond_nbd_refined	0.161
r_nbtor_other	0.093
r_chiral_restr	0.087
r_xyhbond_nbd_other	0.027
r_bond_refined_d	0.015
r_gen_planes_refined	0.006
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	18561
Nucleic Acid Atoms
Solvent Atoms	1365
Heterogen Atoms	50

Software

Software
Software Name	Purpose
REFMAC	refinement
XDS	data reduction
XSCALE	data scaling
SHELXCD	phasing
SHELXD	phasing
SOLVE	phasing
RESOLVE	phasing