2OGY

Asn199Ala Mutant of the 5-methyltetrahydrofolate corrinoid/iron sulfur protein methyltransferase complexed with methyltetrahydrofolate to 2.3 Angstrom resolution


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1F6YPDB ENTRY 1F6Y

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP7.52988-15% PEGMME 5000, 0.05M CALCIUM ACETATE, 20% GLYCEROL, 0.05M HEPES BUFFER; 3-FOLD MOLAR EXCESS OF THE MTHF SUBSTRATE (SCHRICKS LABOLATORIES, JONA, SWITZERLAND). THE SUPERSATURATION OF THE PRECIPITANT SOLUTION REQUIRED DILUTION OF THE PROTEIN-CH3-H4FOLATE COMPLEX BY 50-100-FOLD IN ORDER TO OBTAIN SINGLE CRYSTALS, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Crystal Properties
Matthews coefficientSolvent content
2.3247.08

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 49.772α = 90
b = 78.673β = 90
c = 135.857γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100IMAGE PLATEMARRESEARCH2002-05-25MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONNSLS BEAMLINE X25NSLSX25

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)R Sym I (Observed)Net I Over Average Sigma (I)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
12.346.7399.10.1340.13411.15.42415117.2
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)R-Sym I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
2.32.3699.30.3850.3854.34.81752

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (All)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUTPDB ENTRY 1F6Y2.340.192412521756236998.680.187670.182710.23408RANDOM
Temperature Factor Modeling
Anisotropic B[1][1]Anisotropic B[1][2]Anisotropic B[1][3]Anisotropic B[2][2]Anisotropic B[2][3]Anisotropic B[3][3]
RMS Deviations
KeyRefinement Restraint Deviation
c_angle_deg0.995
c_bond_d0.006
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms3988
Nucleic Acid Atoms
Solvent Atoms322
Heterogen Atoms68

Software

Software
Software NamePurpose
CBASSdata collection
EPMRphasing
CNSrefinement
MOSFLMdata reduction
CCP4data scaling