2OMQ

VEALYL peptide derived from human insulin chain B, residues 12-17


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP2.53102mM peptide in 100 mM NaCl and 50 mM phosphate. Crystals can be more easily reproduced by dissolving peptide to 2 mM in water at room temperature, pH 2.5, VAPOR DIFFUSION, HANGING DROP, temperature 310K

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 18.425α = 90.88
b = 9.613β = 96.12
c = 21.975γ = 100.93
Symmetry
Space GroupP 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDMAR CCD 165 mm2005-07-16MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONESRF BEAMLINE ID13ESRFID13

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
11.790930.1723.982017.5
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)
11.71.8391.70.413299

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 REPLACEMENTTHROUGHOUTpolyalanine beta strands with ideal geometry221.848204083.250.2050.2010.265RANDOM18.338
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]
2.140.410.990.34-0.09-2.12
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg33.309
r_dihedral_angle_3_deg13.076
r_scangle_it10.186
r_dihedral_angle_1_deg7.878
r_scbond_it7.371
r_mcangle_it6.952
r_mcbond_it5.574
r_angle_other_deg3.119
r_angle_refined_deg2.271
r_xyhbond_nbd_refined0.287
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg33.309
r_dihedral_angle_3_deg13.076
r_scangle_it10.186
r_dihedral_angle_1_deg7.878
r_scbond_it7.371
r_mcangle_it6.952
r_mcbond_it5.574
r_angle_other_deg3.119
r_angle_refined_deg2.271
r_xyhbond_nbd_refined0.287
r_nbd_other0.253
r_symmetry_vdw_other0.227
r_nbd_refined0.224
r_nbtor_refined0.214
r_symmetry_vdw_refined0.204
r_symmetry_hbond_refined0.192
r_nbtor_other0.136
r_chiral_restr0.036
r_bond_refined_d0.009
r_gen_planes_refined0.003
r_gen_planes_other0.002
r_mcbond_other
r_bond_other_d
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms200
Nucleic Acid Atoms
Solvent Atoms4
Heterogen Atoms

Software

Software
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PHASERphasing
REFMACrefinement
PDB_EXTRACTdata extraction