1OHK

HUMAN DIHYDROFOLATE REDUCTASE, ORTHORHOMBIC (P21 21 21) CRYSTAL FORM

X-RAY DIFFRACTION

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Crystallization

Crystal Properties
Matthews coefficient	Solvent content
2.54	48

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 36.904	α = 90
b = 69.191	β = 90
c = 69.952	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

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	2.5	8	94.7				5293		2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION		2.5	8	2	5293		94.7	0.218

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]

RMS Deviations
Key	Refinement Restraint Deviation
p_staggered_tor	25.8
p_transverse_tor	23
p_planar_tor	2.3
p_mcangle_it	1.409
p_scangle_it	1.265
p_mcbond_it	0.806
p_scbond_it	0.738
p_xyhbond_nbd	0.374
p_multtor_nbd	0.373
p_singtor_nbd	0.245
p_chiral_restr	0.206
p_planar_d	0.06
p_angle_d	0.058
p_bond_d	0.017
p_plane_restr	0.013
p_angle_deg
p_hb_or_metal_coord
p_xhyhbond_nbd
p_orthonormal_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1501
Nucleic Acid Atoms
Solvent Atoms	18
Heterogen Atoms	91

Software

Software
Software Name	Purpose
PROFFT	refinement