4EW1

High resolution structure of human glycinamide ribonucleotide transformylase in apo form.

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	4.2	298	0.1 M phosphate/citrate buffer, 1.5-2.0 M ammonium sulfate at p.H 4.2. 25% Glycerol added as cryoprotectant, VAPOR DIFFUSION, SITTING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
4.47	72.5

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 78.028	α = 90
b = 78.028	β = 90
c = 230.841	γ = 120

Symmetry
Space Group	P 65 2 2

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 225 mm CCD	Flat mirror (vertical focusing), single crystal Si(111) bent monochromator (horizontal focusing)	2007-11-05	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL11-1	0.9795	SSRL	BL11-1

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	1.52	67.57	99.7	0.043	41.4	9.5		64515

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	1.52	1.57	98.4		0.589	3	7.6

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	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1MEO	1.522	67.57	61124	3263	99.64	0.17385	0.17283	0.19304	RANDOM	19.836

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]
-0.45	-0.22		-0.45		0.67

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.614
r_dihedral_angle_4_deg	18.065
r_dihedral_angle_3_deg	12.49
r_scangle_it	6.09
r_dihedral_angle_1_deg	6.074
r_scbond_it	4.188
r_mcangle_it	3.044
r_mcbond_it	1.969
r_rigid_bond_restr	1.709
r_angle_refined_deg	1.636
r_angle_other_deg	0.974
r_mcbond_other	0.733
r_chiral_restr	0.098
r_bond_refined_d	0.018
r_gen_planes_refined	0.008
r_bond_other_d	0.002
r_gen_planes_other	0.002
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1554
Nucleic Acid Atoms
Solvent Atoms	227
Heterogen Atoms	20

Software

Software
Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection
HKL-2000	data reduction
HKL-2000	data scaling