4IQB | pdb_00004iqb

High Resolution Crystal Structure of C.elegans Thymidylate Synthase

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.6	277	0.1M MES pH 5.6, 0.15M (NH4)2SO4, 18% PEG 5000MME, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.19	43.78

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 99.335	α = 90
b = 98.367	β = 111.77
c = 69.159	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					2011-12-02	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	BESSY BEAMLINE 14.1	0.918	BESSY	14.1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.13	29.3					228161

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	1.13	1.15		89.4	0.439	2.01

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-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1.13	29.3	228161	11419	99.07	0.1147	0.1135	0.1387	0.1541	RANDOM	16.7316

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]
-0.02		-0.02

RMS Deviations
Key	Refinement Restraint Deviation
r_sphericity_free	40.705
r_dihedral_angle_2_deg	34.12
r_dihedral_angle_4_deg	16.829
r_dihedral_angle_3_deg	12.623
r_sphericity_bonded	11.661
r_rigid_bond_restr	6.804
r_dihedral_angle_1_deg	6.784
r_angle_refined_deg	2.194
r_angle_other_deg	1.21
r_chiral_restr	0.144
r_bond_refined_d	0.023
r_gen_planes_refined	0.014
r_gen_planes_other	0.003
r_bond_other_d	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4616
Nucleic Acid Atoms
Solvent Atoms	942
Heterogen Atoms	10

Software

Software
Software Name	Purpose
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction