1LLZ

Structural studies on the synchronization of catalytic centers in glutamate synthase: reduced enzyme

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1LLW

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8	277	PEG4000, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
4.65	73.53

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 166.996	α = 90
b = 166.996	β = 90
c = 221.027	γ = 90

Symmetry
Space Group	P 43 21 2

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	MARRESEARCH		2001-11-03	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-2	0.9	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	3	50	97.1	0.093	0.093	5.7	2.9	62124	62124

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)
1	3	3.16	97.1		0.363	0.363	2.9	2.9	8910

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	FOURIER SYNTHESIS	THROUGHOUT	1LLW	3	129.1	59419	59419	1528	96.57	0.2178	0.21788	0.21656	0.26939	RANDOM	34.021

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]
2.45			2.45		-4.91

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_3_deg	26.356
r_dihedral_angle_1_deg	8.926
r_scangle_it	4.713
r_scbond_it	2.793
r_angle_refined_deg	2.048
r_mcangle_it	1.725
r_mcbond_it	0.887
r_symmetry_vdw_refined	0.365
r_nbd_refined	0.314
r_xyhbond_nbd_refined	0.218

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_3_deg	26.356
r_dihedral_angle_1_deg	8.926
r_scangle_it	4.713
r_scbond_it	2.793
r_angle_refined_deg	2.048
r_mcangle_it	1.725
r_mcbond_it	0.887
r_symmetry_vdw_refined	0.365
r_nbd_refined	0.314
r_xyhbond_nbd_refined	0.218
r_chiral_restr	0.148
r_symmetry_hbond_refined	0.128
r_bond_refined_d	0.018
r_gen_planes_refined	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	11311
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	38

Software

Software
Software Name	Purpose
MOSFLM	data reduction
SCALA	data scaling
AMoRE	phasing
REFMAC	refinement
CCP4	data scaling

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.