3LR8

Self-assembly of spider silk proteins is controlled by a pH-sensitive relay


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSIONAmmonium sulphate, PEG 400, VAPOR DIFFUSION
Crystal Properties
Matthews coefficientSolvent content
3.0459.5

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 91.193α = 90
b = 91.193β = 90
c = 143.546γ = 120
Symmetry
Space GroupP 61 2 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-rayCCDADSC QUANTUM 315MSINGLE WAVELENGTH
21
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONESRF BEAMLINE ID23-1ESRFID23-1
2SYNCHROTRONESRF BEAMLINE ID14-4ESRFID14-4

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
12.379.060.144211.4151392.2
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)
2.32.360.3417.811.92315

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUTNT wild-type2.353.11513980897.720.194360.191560.24654RANDOM8.444
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]
0.590.30.59-0.89
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg39.552
r_dihedral_angle_3_deg14.79
r_dihedral_angle_4_deg14.671
r_dihedral_angle_1_deg10.141
r_scangle_it3.267
r_scbond_it2.372
r_angle_refined_deg1.487
r_mcangle_it1.079
r_mcbond_it0.99
r_nbtor_refined0.29
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg39.552
r_dihedral_angle_3_deg14.79
r_dihedral_angle_4_deg14.671
r_dihedral_angle_1_deg10.141
r_scangle_it3.267
r_scbond_it2.372
r_angle_refined_deg1.487
r_mcangle_it1.079
r_mcbond_it0.99
r_nbtor_refined0.29
r_nbd_refined0.205
r_symmetry_vdw_refined0.192
r_symmetry_hbond_refined0.148
r_xyhbond_nbd_refined0.141
r_chiral_restr0.088
r_bond_refined_d0.016
r_gen_planes_refined0.005
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1850
Nucleic Acid Atoms
Solvent Atoms97
Heterogen Atoms50

Software

Software
Software NamePurpose
REFMACrefinement