1W19

Lumazine Synthase from Mycobacterium tuberculosis bound to 3-(1,3,7- trihydro-9-D-ribityl-2,6,8-purinetrione-7-yl)propane 1-phosphate

X-RAY DIFFRACTION

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Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7		ADA BUFFER PH 6.4, 3.5M POTASSIUM ACETATE,0.5 M DTT,10%MPD

Crystal Properties
Matthews coefficient	Solvent content
2.4	48

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 131.267	α = 90
b = 80.688	β = 120.29
c = 86.188	γ = 90

Symmetry
Space Group	C 1 2 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	IMAGE PLATE	MARRESEARCH	MIRRORS	2003-12-06	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE BW7B		EMBL/DESY, HAMBURG	BW7B

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	20	99.4	0.09	10.26	2.08		52169		1	20.8

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	2.02	99		0.51	3.38	1

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1EJB	2	19.54	49503	2661	99.4	0.151	0.149	0.18	0.194	0.22	RANDOM	13.25

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]
-1.74		-1.7	0.33		-0.3

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	5.323
r_scangle_it	3.176
r_scbond_it	1.896
r_angle_refined_deg	1.81
r_mcangle_it	1.104
r_angle_other_deg	0.895
r_mcbond_it	0.597
r_symmetry_vdw_refined	0.454
r_symmetry_vdw_other	0.315
r_nbd_refined	0.266
r_symmetry_hbond_refined	0.246
r_nbd_other	0.245
r_xyhbond_nbd_refined	0.212
r_chiral_restr	0.095
r_nbtor_other	0.086
r_bond_refined_d	0.012
r_gen_planes_refined	0.005
r_gen_planes_other	0.004
r_bond_other_d	0.002
r_dihedral_angle_2_deg
r_dihedral_angle_3_deg
r_dihedral_angle_4_deg
r_nbtor_refined
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_mcbond_other
r_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5294
Nucleic Acid Atoms
Solvent Atoms	631
Heterogen Atoms	226

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing