2RK2

DHFR R-67 complexed with NADP

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8	277	50% 2-methyl-2,4-pentanediol (MPD), 100 mM Tris, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.2	44.18

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 67.52	α = 90
b = 67.52	β = 90
c = 52.07	γ = 90

Symmetry
Space Group	I 41 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	RIGAKU SATURN 92	Varimax HF, Confocal mirrors	2007-07-30	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU MICROMAX-007 HF	1.5418

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	1.9	50	97.8	0.115	13	6.4	4883	4883		-3

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	1.9	1.97	83.7		0.219	4.5	4	396

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	2RH2	1.9	22.86	4880	4623	257	97.95	0.14403	0.14096	0.19991	Random, preserved from 2RH2	15.783

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]
0.08			0.08		-0.16

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.274
r_dihedral_angle_4_deg	19.382
r_dihedral_angle_3_deg	13.513
r_dihedral_angle_1_deg	6.559
r_scangle_it	4.032
r_scbond_it	2.913
r_angle_refined_deg	2.295
r_mcangle_it	2.185
r_mcbond_it	1.562
r_symmetry_hbond_refined	0.426
r_symmetry_vdw_refined	0.382
r_nbtor_refined	0.329
r_xyhbond_nbd_refined	0.314
r_nbd_refined	0.25
r_chiral_restr	0.167
r_bond_refined_d	0.023
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	441
Nucleic Acid Atoms
Solvent Atoms	86
Heterogen Atoms	68

Software

Software
Software Name	Purpose
REFMAC	refinement
StructureStudio	data collection
HKL-2000	data reduction
HKL-2000	data scaling
CNS	phasing