1XZV

T-to-THigh Quaternary Transitions in Human Hemoglobin: alphaP95A deoxy low-salt


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1XXTPDB ENTRY 1XXT

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1729810% PEG 6000, 10 mM potassium phosphate, 100 mM potassium chloride, 3 mM sodium dithionite, 10 mg/ml Hb, pH 7.0, batch, temperature 298K
Crystal Properties
Matthews coefficientSolvent content
2.5651.95

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 97.2α = 90
b = 99.1β = 90
c = 66γ = 90
Symmetry
Space GroupP 21 21 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray298AREA DETECTORSDMSGRAPHITE1999-03-07MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODERIGAKU RU200

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
12.1150970.1147.46.536004
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)
2.112.2886.70.2271.93

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (All)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUTPDB ENTRY 1XXT2.11102352073308629950.170.246MATCHED TO PDB ENTRY 1XXT
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]
RMS Deviations
KeyRefinement Restraint Deviation
p_transverse_tor32.1
p_staggered_tor20.6
p_scangle_it7.751
p_scbond_it6.17
p_mcangle_it3.474
p_mcbond_it2.555
p_planar_tor2.3
p_xyhbond_nbd0.18
p_multtor_nbd0.174
p_singtor_nbd0.166
RMS Deviations
KeyRefinement Restraint Deviation
p_transverse_tor32.1
p_staggered_tor20.6
p_scangle_it7.751
p_scbond_it6.17
p_mcangle_it3.474
p_mcbond_it2.555
p_planar_tor2.3
p_xyhbond_nbd0.18
p_multtor_nbd0.174
p_singtor_nbd0.166
p_chiral_restr0.137
p_hb_or_metal_coord0.127
p_planar_d0.041
p_angle_d0.026
p_bond_d0.011
p_plane_restr0.011
p_angle_deg
p_xhyhbond_nbd
p_orthonormal_tor
p_special_tor
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms4376
Nucleic Acid Atoms
Solvent Atoms194
Heterogen Atoms172

Software

Software
Software NamePurpose
SDMSdata collection
SDMSdata reduction
X-PLORmodel building
PROLSQrefinement
SDMSdata scaling
X-PLORphasing