2NRN

Self-assembly of coiled-coil tetramers in the 1.40 A structure of a leucine-zipper mutant


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 2IPZPDB ENTRY 2IPZ

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP5.42950.1M sodium citrate, 1M ammonium dihydrophosphate, pH 5.4, VAPOR DIFFUSION, HANGING DROP, temperature 295.0K
Crystal Properties
Matthews coefficientSolvent content
1.9537

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 20.117α = 90
b = 87.875β = 103.83
c = 35.509γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100IMAGE PLATEMAR scanner 345 mm plate2006-02-24MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONNSLS BEAMLINE X4C0.9795NSLSX4C

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
11.443.9495.80.05714.13.4227112271115.2
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)
11.41.4391.50.45133.31435

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 2IPZ1.443.942271122711117795.80.185060.185060.183120.21912RANDOM25.697
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]
0.01-0.060.41-0.45
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg34.48
r_dihedral_angle_3_deg13.49
r_dihedral_angle_4_deg3.989
r_scangle_it3.766
r_dihedral_angle_1_deg3.242
r_scbond_it2.616
r_mcangle_it1.235
r_angle_refined_deg1.148
r_mcbond_it0.865
r_nbtor_refined0.298
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg34.48
r_dihedral_angle_3_deg13.49
r_dihedral_angle_4_deg3.989
r_scangle_it3.766
r_dihedral_angle_1_deg3.242
r_scbond_it2.616
r_mcangle_it1.235
r_angle_refined_deg1.148
r_mcbond_it0.865
r_nbtor_refined0.298
r_nbd_refined0.205
r_symmetry_vdw_refined0.163
r_symmetry_hbond_refined0.161
r_xyhbond_nbd_refined0.114
r_chiral_restr0.077
r_bond_refined_d0.009
r_gen_planes_refined0.005
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1022
Nucleic Acid Atoms
Solvent Atoms129
Heterogen Atoms20

Software

Software
Software NamePurpose
REFMACrefinement
MAR345data collection
DENZOdata reduction
SCALEPACKdata scaling
PHASERphasing