1DAJ

COMPARISON OF TERNARY COMPLEXES OF PNEUMOCYSTIS CARINII AND WILD TYPE HUMAN DIHYDROFOLATE REDUCTASE WITH COENZYME NADPH AND A NOVEL CLASSICAL ANTITUMOR FURO[2,3D]PYRIMIDINE ANTIFOLATE


X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 37.17 α = 90
b = 43.09 β = 94.85
c = 61.05 γ = 90
Symmetry
Space Group P 1 21 1

Diffraction

Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE RIGAKU RAXIS -- 1994-07-14
Diffraction Radiation
Monochromator Protocol
-- --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
-- -- -- -- --

Data Collection

Overall
Resolution (High) Resolution (Low) Percent Possible (Observed) R Merge I (Observed) R Sym 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
-- -- 65.5 0.07 -- -- 3.09 -- 5958 -- 2.0 --

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
-- 2.3 8.0 -- -- -- 5631 -- -- -- -- 0.181 -- --
Temperature Factor Modeling
Temperature Factor Value
Mean Isotropic B 26.72
RMS Deviations
Key Refinement Restraint Deviation
p_transverse_tor 27.3
p_staggered_tor 20.4
p_planar_tor 1.8
p_xyhbond_nbd 0.273
p_multtor_nbd 0.284
p_bond_d 0.012
p_angle_d 0.038
p_planar_d 0.033
p_mcbond_it 1.327
p_mcangle_it 2.112
p_scbond_it 1.212
p_scangle_it 1.768
p_plane_restr 0.01
p_chiral_restr 0.136
p_singtor_nbd 0.213
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1686
Nucleic Acid Atoms 0
Heterogen Atoms 80
Solvent Atoms 50

Software

Computing
Computing Package Purpose
R-AXIS II Data Reduction (intensity integration)
PROFFT Structure Refinement
Software
Software Name Purpose
PROFFT refinement