3RHM

Crystal structure of the E673Q mutant oF C-Terminal domain of 10'FORMYLTETRAHYDROFOLATE DEHYDROGENASE

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2O2P	PDB entry 2O2P

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7	293	0.1M HEPES pH 7.0, 1.6M Ammonium Sulfate, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 261.606	α = 90
b = 193.716	β = 109.05
c = 97.315	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	MAR scanner 300 mm plate		2007-07-21	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 22-ID	1.0	APS	22-ID

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	2.38	50	96.9	0.143	6.7	4.7	176623	176623

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	2.38	2.47	81.2		0.475	1.9	2.1

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	MOLECULAR REPLACEMENT	THROUGHOUT	PDB entry 2O2P	2.38	49.81	167728	167728	8869	96.71	0.17279	0.17122	0.20225	RANDOM	40.806

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]
0.64		2.18	0.27		0.51

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.942
r_dihedral_angle_4_deg	24.471
r_dihedral_angle_3_deg	15.847
r_dihedral_angle_1_deg	7.164
r_scangle_it	5.647
r_scbond_it	3.757
r_mcangle_it	2.354
r_angle_refined_deg	2.161
r_mcbond_it	1.315
r_nbtor_refined	0.304
r_nbd_refined	0.203
r_chiral_restr	0.142
r_symmetry_vdw_refined	0.142
r_symmetry_hbond_refined	0.137
r_xyhbond_nbd_refined	0.129
r_bond_refined_d	0.029
r_gen_planes_refined	0.011
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	15152
Nucleic Acid Atoms
Solvent Atoms	683
Heterogen Atoms	164

Software

Software
Software Name	Purpose
SERGUI	data collection
MOLREP	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling