3O6X | pdb_00003o6x

Crystal Structure of the type III Glutamine Synthetase from Bacteroides fragilis

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	modified microbatch	4.6	298	50 mM ammonium sulphate, 25 mM sodium acetate trihydrate pH 4.6, and 6.25% PEG 4000, modified microbatch, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.38	48.38

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 198.25	α = 90
b = 203.96	β = 90
c = 234.59	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	MAATEL MDII	mirrors	2009-05-21	M	SINGLE WAVELENGTH
2	1	x-ray	100	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE BM14	0.954	ESRF	BM14
2	SYNCHROTRON	ESRF BEAMLINE ID14-2	0.933	ESRF	ID14-2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	3.5	62.869	100	0.208	0.208	11.2	7.8	60104	60104

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	3.5	3.69	100		0.472	0.472	1.6	7.9	8687

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-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	3.5	62.87	60072	3016	99.9	0.239	0.22	0.269	0.25	RANDOM	37.7425

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]
-6.19			5.7		0.49

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	20.7
c_improper_angle_d	1.67
c_angle_deg	1.4
c_bond_d	0.009
c_mcbond_it
c_mcangle_it
c_scbond_it
c_scangle_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	30720
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	276

Software

Software
Software Name	Purpose
MOSFLM	data reduction
SCALA	data scaling
CNS	refinement
PDB_EXTRACT	data extraction
PHENIX	phasing

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.