1DYH

ISOMORPHOUS CRYSTAL STRUCTURES OF ESCHERICHIA COLI DIHYDROFOLATE REDUCTASE COMPLEXED WITH FOLATE, 5-DEAZAFOLATE AND 5,10-DIDEAZATETRAHYDROFOLATE: MECHANISTIC IMPLICATIONS


X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 93.21 α = 90
b = 93.21 β = 90
c = 73.94 γ = 120
Symmetry
Space Group P 61

Diffraction

Diffraction Radiation
Monochromator Protocol
-- --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline

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
-- 1.9 -- -- -- -- -- -- -- -- 0.149 -- -- --
RMS Deviations
Key Refinement Restraint Deviation
t_angle_deg 2.93
t_bond_d 0.014
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2508
Nucleic Acid Atoms 0
Heterogen Atoms 67
Solvent Atoms 422

Software

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