4OAA

Crystal structure of E. coli lactose permease G46W,G262W bound to sugar


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 2CFQPDB ENTRY 2CFQ

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP829510mg/ml protein (20mM Hepes, .2% NG)and 5mM TDG against 1M NaCl, 0.05M Tris, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 295K
Crystal Properties
Matthews coefficientSolvent content
4.3771.84

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 101.56α = 90
b = 121.94β = 90
c = 264.01γ = 90
Symmetry
Space GroupC 2 2 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC QUANTUM 315rmonochrometer2013-06-25MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONALS BEAMLINE 8.3.11.115869ALS8.3.1

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge 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
12.984495.30.116.473.83218631737-3-3167
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
12.983.261.70.1940.082.6

Refinement

Statistics
Diffraction IDStructure Solution MethodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (All)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTPDB ENTRY 2CFQ3.5441.342095420954107799.380.25830.25650.2929
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
f_dihedral_angle_d14.418
f_angle_d0.899
f_chiral_restr0.048
f_bond_d0.006
f_plane_restr0.004
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms6211
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms46

Software

Software
Software NamePurpose
PHENIXrefinement
PHASERphasing
ELVESrefinement
XDSdata reduction
XSCALEdata scaling