4IRO

Crystal structure of T-state carbonmonoxy hemoglobin from Trematomus bernacchii at pH 8.4


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP8.4298deoxy-HbTb crystals have been grown using 8-9.5 mg/ml protein mixed with equal amount of 7-12 % w/v PEG 6000, PBS 100 mM, KCl 0.3 M, pH 8.4. Deoxy HbTb crystals were then soaked for several hours in a deoxygenated, CO saturated, stabilizing solution containing 30% w/v PEG 6000, 100 mM Trsi-HCl pH 8.4, 200 mM KCl, 5 mM dithionite reducing agent and flushed with gaseous CO before data collection, VAPOR DIFFUSION, HANGING DROP, temperature 298.0K
Crystal Properties
Matthews coefficientSolvent content
3.1260.58

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 61.538α = 90
b = 104.802β = 90.36
c = 61.616γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDRIGAKU SATURN 944mirrors2010-11-27MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODERIGAKU MICROMAX-007 HF1.5418

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (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
12.272.1653483534835

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (All)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONFOURIER SYNTHESISTHROUGHOUT2.272.1652348353331615190.220.219RANDOM
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]
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms4484
Nucleic Acid Atoms
Solvent Atoms37
Heterogen Atoms174

Software

Software
Software NamePurpose
HKL-2000data collection
SHELXL-97model building
SHELXL-97refinement
HKL-2000data reduction
HKL-2000data scaling
SHELXL-97phasing