3RLF

Crystal structure of the maltose-binding protein/maltose transporter complex in an outward-facing conformation bound to MgAMPPNP


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 2R6GPDB ENTRY 2R6G

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP7.529328% PEG 4000, 0.1M sodium hepes pH 7.5, 0.2M sodium chloride, 0.05M magnesium chloride, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Crystal Properties
Matthews coefficientSolvent content
3.463.78

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 72.098α = 86.7
b = 95.812β = 82.68
c = 109.983γ = 76.4
Symmetry
Space GroupP 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDMARMOSAIC 300 mm CCD2010-08-05MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONAPS BEAMLINE 23-ID-B1.03320APS23-ID-B

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
12.22088.10.0541.62127961127961
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R-Sym I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
12.22.3256.70.34221.6

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 (All)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUTPDB ENTRY 2R6G2.220117902117902620986.30.224810.224810.22330.25406RANDOM57.508
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]
0.20.560.83-0.3-0.85-0.28
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg36.765
r_dihedral_angle_3_deg15.156
r_dihedral_angle_4_deg14.599
r_dihedral_angle_1_deg4.534
r_scangle_it1.149
r_angle_refined_deg1.012
r_scbond_it0.685
r_mcangle_it0.482
r_mcbond_it0.252
r_chiral_restr0.064
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg36.765
r_dihedral_angle_3_deg15.156
r_dihedral_angle_4_deg14.599
r_dihedral_angle_1_deg4.534
r_scangle_it1.149
r_angle_refined_deg1.012
r_scbond_it0.685
r_mcangle_it0.482
r_mcbond_it0.252
r_chiral_restr0.064
r_bond_refined_d0.007
r_gen_planes_refined0.003
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms14672
Nucleic Acid Atoms
Solvent Atoms339
Heterogen Atoms212

Software

Software
Software NamePurpose
Blu-Icedata collection
PHASERphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling