7DFR

CRYSTAL STRUCTURES OF ESCHERICHIA COLI DIHYDROFOLATE REDUCTASE. THE NADP+ HOLOENZYME AND THE FOLATE(DOT)NADP+ TERNARY COMPLEX. SUBSTRATE BINDING AND A MODEL FOR THE TRANSITION STATE

X-RAY DIFFRACTION

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Crystallization

Crystal Properties
Matthews coefficient	Solvent content
3.27	62.37

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 62.207	α = 90
b = 62.207	β = 90
c = 105.525	γ = 120

Symmetry
Space Group	P 32 2 1

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION		2.5				0.245

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	23.6
p_orthonormal_tor	18.2
p_planar_tor	4.4
p_scangle_it	3.966
p_mcangle_it	3.847
p_scbond_it	2.649
p_mcbond_it	2.595
p_xhyhbond_nbd	0.273
p_multtor_nbd	0.266
p_chiral_restr	0.232
p_singtor_nbd	0.217
p_planar_d	0.039
p_angle_d	0.034
p_bond_d	0.022
p_plane_restr	0.022
p_angle_deg
p_hb_or_metal_coord
p_xyhbond_nbd
p_transverse_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1229
Nucleic Acid Atoms
Solvent Atoms	55
Heterogen Atoms	80

Software

Software
Software Name	Purpose
PROLSQ	refinement