1D0V

CRYSTAL STRUCTURE OF NICOTINATE MONONUCLEOTIDE:5,6-DIMETHYLBENZIMIDAZOLE PHOSPHORIBOSYLTRANSFERASE (COBT) FROM SALMONELLA TYPHIMURIUM COMPLEXED WITH ITS REACTION PRODUCTS DETERMINED TO 1.9 A RESOLUTION


X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystallization

Crystalization Experiments
Method Vapor Diffusion Hanging Drop
pH 6
Temperature 4.0
Details 1.3 NH4H2PO4/(NH4)2HPO4, 1MM 5,6-DIMETHYLBENZIMIDAZOLE, 4 % POLYETHYLENEGLYCOL, AND THEN THE CRYSTALS WERE SOAKED IN 21 MM NICOTINATE MONONUCLEOTIDE IN 1.0 M NAH2PO4/K2HPO4 (PH 6.0), VAPOR DIFFUSION, HANGING DROP

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 72.1 α = 90
b = 90 β = 90
c = 47.6 γ = 90
Symmetry
Space Group P 21 21 2

Diffraction

Diffraction Experiment
ID # Data Collection Temperature
1 277
2 274
Diffraction Detector
Detector Diffraction Type Details Collection Date
AREA DETECTOR SIEMENS HI-STAR -- 1999-01-20
-- -- -- --
Diffraction Radiation
Monochromator Protocol
-- SINGLE WAVELENGTH
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline
ROTATING ANODE ENRAF-NONIUS -- -- --
-- -- -- -- --

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
1.9 30 87.33 0.066 -- -- 3.1 25069 21894 -- -- --
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)
1.88 1.98 65.0 -- -- -- 1.3 --

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 30.0 0.0 0.0 25069 21894 -- 87.3 0.163 -- 0.16 0.249 10 % OF DATA WERE OMITTED RANDOMLY
RMS Deviations
Key Refinement Restraint Deviation
t_angle_deg 1.83
t_bond_d 0.01
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 2418
Nucleic Acid Atoms 0
Heterogen Atoms 33
Solvent Atoms 158

Software

Software
Software Name Purpose
FRAMBO data collection
XDS data reduction
SOLVE phasing
TNT refinement
FRAMBO data reduction
XDS data scaling