1LT5

HEAT-LABILE ENTEROTOXIN B-PENTAMER COMPLEXED WITH THIODIGALACTOSIDE


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1LTAPDB ENTRY 1LTA

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
17.5pH 7.5
Crystal Properties
Matthews coefficientSolvent content
2.244

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 42.68α = 90
b = 100.13β = 107.66
c = 63.67γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray295IMAGE PLATEMARRESEARCHDOUBLY-FOCUSED MIRRORS1996-06-13M
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONEMBL/DESY, HAMBURG BEAMLINE BW7AEMBL/DESY, HAMBURGBW7A

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
11.725770.065132.8643351
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)
1.71.76810.2683.5

Refinement

Statistics
Diffraction IDStructure Solution MethodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTPDB ENTRY 1LTA1.725140978730.1720.17214
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]
3.638-0.8320.077-3.715
RMS Deviations
KeyRefinement Restraint Deviation
x_dihedral_angle_d24.6
x_mcangle_it3.17
x_scangle_it3.17
x_mcbond_it1.92
x_scbond_it1.92
x_angle_deg1.56
x_improper_angle_d1.34
x_bond_d0.01
x_bond_d_na
x_bond_d_prot
RMS Deviations
KeyRefinement Restraint Deviation
x_dihedral_angle_d24.6
x_mcangle_it3.17
x_scangle_it3.17
x_mcbond_it1.92
x_scbond_it1.92
x_angle_deg1.56
x_improper_angle_d1.34
x_bond_d0.01
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na
x_angle_deg_prot
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d_na
x_improper_angle_d_prot
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms4120
Nucleic Acid Atoms
Solvent Atoms415
Heterogen Atoms115

Software

Software
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
X-PLORmodel building
X-PLORrefinement
X-PLORphasing