1JVN

CRYSTAL STRUCTURE OF IMIDAZOLE GLYCEROL PHOSPHATE SYNTHASE: A TUNNEL THROUGH A (BETA/ALPHA)8 BARREL JOINS TWO ACTIVE SITES

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	298	28 % PEG MME 5000, 0.2 M Ammonium sulfate, 0.1 M MES buffer, pH 6.5, VAPOR DIFFUSION, HANGING DROP at 298K

Crystal Properties
Matthews coefficient	Solvent content
2.61	52.93

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 98.37	α = 90
b = 112.173	β = 90
c = 116.68	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	MARRESEARCH	Si(111) double-crystal	2001-11-05	M	SINGLE WAVELENGTH
2	1	x-ray	100	CCD	ADSC QUANTUM 4	bent cylindrical Si-mirror (Rh coating), Si(111) double-crystal	2001-11-17	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 17-ID	1.000	APS	17-ID
2	SYNCHROTRON	APS BEAMLINE 14-BM-D	0.9796, 0.9795, 0.9537	APS	14-BM-D

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	2.1	100	100	0.067	7.3	14.3		73741		2	21.3

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)
1,2	2.1	2.18	99.9		0.39	2	13.1

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	2.1	75.21	73662	73662	3686	97.6	0.224	0.224	0.242	RANDOM	31.1

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]
3.96			-5.22		1.26

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	24.2
c_scangle_it	2.87
c_scbond_it	1.92
c_mcangle_it	1.91
c_angle_deg	1.4
c_mcbond_it	1.2
c_improper_angle_d	1
c_bond_d	0.01

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	8370
Nucleic Acid Atoms
Solvent Atoms	412
Heterogen Atoms	36

Software

Software
Software Name	Purpose
SOLVE	phasing
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.