3ODQ

Structure of a Crystal Form of Human Methemoglobin Indicative of Fiber Formation


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP5.529515-30% PEG, pH 4.5-5.5, 0.2 M salt of several varieties, VAPOR DIFFUSION, SITTING DROP, temperature 295K
Crystal Properties
Matthews coefficientSolvent content
2.3547.61

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 54.6α = 90
b = 54.6β = 90
c = 677.42γ = 120
Symmetry
Space GroupP 61 2 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDMARMOSAIC 325 mm CCDFlat collimating mirror, double crystal monochromator, toroid focusing mirror2008-05-10MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONSSRL BEAMLINE BL9-20.9794SSRLBL9-2

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
12.647.29850.1317.28.13171721632632.5
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)
12.62.6939.60.5571.32.65760

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 1NEJ3.147.29121771186359997.40.2950.2860.2840.325RANDOM168.8
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]
17.6617.66-35.32
RMS Deviations
KeyRefinement Restraint Deviation
c_dihedral_angle_d19.5
c_scangle_it7.29
c_mcangle_it5.37
c_scbond_it4.59
c_mcbond_it3.08
c_angle_deg2
c_improper_angle_d1.77
c_bond_d0.024
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms4384
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms172

Software

Software
Software NamePurpose
MAR345dtbdata collection
PHASERphasing
CNSrefinement
d*TREKdata reduction
d*TREKdata scaling