3G4A | pdb_00003g4a

Crystal structure of flavine dependant thymidylate synthase S88A mutant from Thermotoga maritima at 1.95 angstrom resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8	295	42% PEG 200, 0.1M Tris-HCl, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
2.01	38.7

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 53.952	α = 90
b = 116.222	β = 90
c = 140.728	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	MARMOSAIC 325 mm CCD	Flat collimating mirror, toroid focusing mirror	2007-03-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL9-2	0.9795	SSRL	BL9-2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.95	89.4	99.6	0.066	13.2	4.4	65136	65136

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.95	2	99.6		0.692	1.5	3.7	4580

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-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	DIFFERENCE FOURIER	THROUGHOUT	1.95	89.4	61778	3288	99.5	0.18746	0.18565	0.19	0.22173	0.22	RANDOM	30.475

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]
3.1			-0.71		-2.39

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.649
r_dihedral_angle_4_deg	17.572
r_dihedral_angle_3_deg	14.439
r_dihedral_angle_1_deg	6
r_scangle_it	2.637
r_scbond_it	1.767
r_angle_refined_deg	1.588
r_mcangle_it	1.211
r_angle_other_deg	0.958
r_mcbond_it	0.795
r_symmetry_vdw_other	0.239
r_mcbond_other	0.222
r_nbd_refined	0.21
r_nbd_other	0.208
r_symmetry_hbond_refined	0.204
r_symmetry_vdw_refined	0.198
r_nbtor_refined	0.192
r_xyhbond_nbd_refined	0.158
r_chiral_restr	0.09
r_nbtor_other	0.09
r_bond_refined_d	0.014
r_gen_planes_refined	0.006
r_bond_other_d	0.002
r_gen_planes_other	0.001
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_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7042
Nucleic Acid Atoms
Solvent Atoms	159
Heterogen Atoms	292

Software

Software
Software Name	Purpose
Blu-Ice	data collection
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling
REFMAC	phasing