3GA8

Structure of the N-terminal domain of the E. coli protein MqsA (YgiT/b3021)

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8.1	298	30% PEG 4000, 0.1M Tris, 0.2M sodium selenate, pH 8.1, VAPOR DIFFUSION, SITTING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.48	50.38

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 30.841	α = 90
b = 52.106	β = 90
c = 53.767	γ = 90

Symmetry
Space Group	P 21 21 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 QUANTUM 270	Toroidal focusing mirror	2008-12-04	M	SAD
2	1	x-ray	100	CCD	ADSC QUANTUM 270	Toroidal focusing mirror	2008-12-04	M	SAD
1,2	1

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X6A	0.9787	NSLS	X6A
2	SYNCHROTRON	NSLS BEAMLINE X6A	0.9321	NSLS	X6A

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	1.7	50	97.4	0.057	21.1	5	10054	9796			15.9

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	1.7	1.73	96.7		0.262	6.62	5.2	484

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	SAD	THROUGHOUT	1.7	37.42	9308	9308	467	97.57	0.16591	0.16591	0.1649	0.18559	RANDOM	12.698

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]
-0.1			-0.2		0.29

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	28.498
r_dihedral_angle_4_deg	16.827
r_dihedral_angle_3_deg	9.263
r_scangle_it	5.432
r_dihedral_angle_1_deg	5.111
r_scbond_it	3.761
r_mcangle_it	2.518
r_mcbond_it	1.799
r_angle_refined_deg	1.283
r_angle_other_deg	0.826
r_mcbond_other	0.443
r_symmetry_vdw_other	0.278
r_symmetry_vdw_refined	0.238
r_nbd_refined	0.214
r_symmetry_hbond_refined	0.212
r_nbd_other	0.192
r_nbtor_refined	0.168
r_xyhbond_nbd_refined	0.164
r_nbtor_other	0.084
r_chiral_restr	0.081
r_bond_refined_d	0.012
r_gen_planes_refined	0.005
r_bond_other_d	0.001
r_gen_planes_other	0.001
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	511
Nucleic Acid Atoms
Solvent Atoms	97
Heterogen Atoms	11

Software

Software
Software Name	Purpose
HKL-2000	data collection
SHELXS	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling