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 Experimental Data & Validation


X-ray Experimental Help

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 62.21 α = 90
b = 62.21 β = 90
c = 105.53 γ = 120
Symmetry
Space Group P 32 2 1

Refinement

Statistics
Structure Solution Method Refinement High Resolution Refinement Low Resolution Cut-off Sigma (I) Cut-off Sigma (F) Number of Reflections (All) Number of Reflections (Observed) Number of Reflections (R-Free) Percent Reflections (Observed) R-Factor (All) R-Factor (Observed) R-Work R-Free R-Free Selection Details
-- 2.5 -- -- -- -- -- -- -- -- 0.245 -- -- --
RMS Deviations
Key Refinement Restraint Deviation
p_orthonormal_tor 18.2
p_staggered_tor 23.6
p_planar_tor 4.4
p_xhyhbond_nbd 0.273
p_multtor_nbd 0.266
p_bond_d 0.022
p_angle_d 0.034
p_planar_d 0.039
p_mcbond_it 2.595
p_mcangle_it 3.847
p_scbond_it 2.649
p_scangle_it 3.966
p_plane_restr 0.022
p_chiral_restr 0.232
p_singtor_nbd 0.217
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1229
Nucleic Acid Atoms 0
Heterogen Atoms 80
Solvent Atoms 55

Software

Computing
Computing Package Purpose
PROLSQ Structure Refinement
Software
Software Name Purpose
PROLSQ refinement