4GQN

Crystallographic structure of trimeric Riboflavin Synthase from Brucella abortus in complex with 5-Nitro-6-(D-Ribitylamino)-2,4(1H,3H) Pyrimidinedione

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	4E0F	PDB 4E0F

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.4	292	12% PEG 8000, 10% GLYCEROL, 0.5 M POTASSIUM CHLORIDE, pH 7.4, VAPOR DIFFUSION, HANGING DROP, temperature 292K

Crystal Properties
Matthews coefficient	Solvent content
2.28	46.12

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 69.85	α = 90
b = 92.3	β = 90
c = 99.09	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	PIXEL	PSI PILATUS 6M	KIRKPATRICK-BAEZ PAIR OF BI-MORPH MIRRORS	2012-07-26	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SOLEIL BEAMLINE PROXIMA 1	0.980110	SOLEIL	PROXIMA 1

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	1.85	50	99.6	0.075	0.075	15.65	5.81	55235	55235			28.68

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	1.85	1.96	98.7		0.773	0.773	1.99	5.75	8736

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	MOLECULAR REPLACEMENT	THROUGHOUT	PDB 4E0F	1.85	27.09	55210	55210	2765	99.73	0.2016	0.2016	0.1999	0.2339	RANDOM	31.4

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]
5.1766			-3.5759		-1.6007

RMS Deviations
Key	Refinement Restraint Deviation
t_other_torsion	17.12
t_omega_torsion	2.31
t_angle_deg	0.99
t_bond_d	0.007
t_dihedral_angle_d
t_trig_c_planes
t_gen_planes
t_it
t_chiral_improper_torsion
t_ideal_dist_contact

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4637
Nucleic Acid Atoms
Solvent Atoms	307
Heterogen Atoms	126

Software

Software
Software Name	Purpose
MxCuBE	data collection
AMoRE	phasing
BUSTER	refinement
XDS	data reduction
XDS	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.