1V4A

Structure of the N-terminal Domain of Escherichia coli Glutamine Synthetase adenylyltransferase

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.5	294	PEG 2000 MME, sodium formate, sodium acetate, pH 4.5, VAPOR DIFFUSION, HANGING DROP, temperature 294K

Crystal Properties
Matthews coefficient	Solvent content
2.69	53.98

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 116.836	α = 90
b = 116.836	β = 90
c = 67.744	γ = 120

Symmetry
Space Group	P 32 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			2003-02-05	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 19-ID	0.95372, 0.97844, 0.97855	APS	19-ID

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	100	100	0.083	8.9	35	36424	36424	1	1

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	2.07	100		0.517	5.2		3591

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	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	2	50	36281	34466	1815	99.91	0.23	0.22993	0.22785	0.269	RANDOM	30.498

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]
0.53	0.26		0.53		-0.79

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	5.348
r_scangle_it	3.726
r_mcangle_it	2.887
r_scbond_it	2.573
r_mcbond_it	1.941
r_angle_refined_deg	1.076
r_angle_other_deg	0.78
r_symmetry_vdw_other	0.224
r_nbd_other	0.218
r_nbd_refined	0.198
r_symmetry_hbond_refined	0.173
r_xyhbond_nbd_refined	0.155
r_nbtor_other	0.083
r_chiral_restr	0.059
r_symmetry_vdw_refined	0.054
r_bond_refined_d	0.011
r_gen_planes_refined	0.003
r_bond_other_d	0.002
r_gen_planes_other	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3370
Nucleic Acid Atoms
Solvent Atoms	171
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
SOLVE	phasing