1ML3

Evidences for a flip-flop catalytic mechanism of Trypanosoma cruzi glyceraldehyde-3-phosphate dehydrogenase, from its crystal structure in complex with reacted irreversible inhibitor 2-(2-phosphono-ethyl)-acrylic acid 4-nitro-phenyl ester


X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 7.5
Temperature 291.0
Details PEG 8000, CALCIUM ACETATE, EDTA, SODIUM AZIDE, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 81.46 α = 90
b = 85.26 β = 95.61
c = 105.15 γ = 90
Symmetry
Space Group P 1 21 1

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 100
Diffraction Detector
Detector Diffraction Type Details Collection Date
IMAGE PLATE MARRESEARCH -- 2000-10-05
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
SYNCHROTRON LNLS BEAMLINE D03B-MX1 1.5418 LNLS D03B-MX1

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
2.5 20 97.5 0.113 -- -- 2.77 -- 48450 -- -- --
High Resolution Shell
Resolution (High) Resolution (Low) Percent Possible (All) R Merge I (Observed) R-Sym I (Observed) Mean I Over Sigma (Observed) Redundancy Number Unique Reflections (All)
2.5 2.56 99.0 0.438 -- 2.57 2.47 --

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
MOLECULAR REPLACEMENT 2.5 20.0 -- -- 49486 48450 2455 97.5 -- -- 0.1986 0.2645 --
RMS Deviations
Key Refinement Restraint Deviation
c_bond_d 0.006174
c_angle_d 1.22317
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 10984
Nucleic Acid Atoms 0
Heterogen Atoms 182
Solvent Atoms 695

Software

Software
Software Name Purpose
DENZO data reduction
SCALEPACK data scaling
AMoRE phasing
CNS refinement version: 1.0