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2IHM (molecule B) was used as the starting molecule for molecular replacement for a lower resolution structure, which was then used as the starting model for the current higher resolution structure.
Crystallization
Crystalization Experiments
ID
Method
pH
Temperature
Details
1
VAPOR DIFFUSION, HANGING DROP
8
295
Crystals were grown by mixing 1 uL of concentrated protein (10.7mg/mL) with 1 uL of mother liquor (50 mM imidazole pH 8, 0.8M sodium citrate) at room temperature, using the hanging drop vapor diffusion technique. The crystals reached usable size within 24 hours, and were then directly transferred to a cryoprotectant solution containing 50mM imidazole pH 8, 75mM NaCl, 1M sodium citrate, 10% glycerol., VAPOR DIFFUSION, HANGING DROP, temperature 295K
Crystal Properties
Matthews coefficient
Solvent content
2.43
49.3
Crystal Data
Unit Cell
Length ( Å )
Angle ( ˚ )
a = 124.192
α = 90
b = 124.192
β = 90
c = 50.407
γ = 90
Symmetry
Space Group
P 41 21 2
Diffraction
Diffraction Experiment
ID #
Crystal ID
Scattering Type
Data Collection Temperature
Detector
Detector Type
Details
Collection Date
Monochromator
Protocol
1
1
x-ray
93
CCD
RIGAKU SATURN 92
VariMaxHF mirrors
2012-09-03
M
SINGLE WAVELENGTH
Radiation Source
ID #
Source
Type
Wavelength List
Synchrotron Site
Beamline
1
ROTATING ANODE
RIGAKU MICROMAX-007 HF
1.54
Data Collection
Overall
ID #
Resolution (High)
Resolution (Low)
Percent Possible (Observed)
R Sym I (Observed)
Net I Over Average Sigma (I)
Redundancy
Number Reflections (All)
Number Reflections (Observed)
Observed Criterion Sigma (F)
Observed Criterion Sigma (I)
B (Isotropic) From Wilson Plot
1
1.849
50
99.3
0.056
16.4
9
34121
34121
-3
22.27
Highest Resolution Shell
ID #
Resolution (High)
Resolution (Low)
Percent Possible (All)
Percent Possible (Observed)
R Merge I (Observed)
Mean I Over Sigma (Observed)
Redundancy
Number Unique Reflections (All)
1
1.85
1.92
96.4
0.414
4.8
3245
Refinement
Statistics
Diffraction ID
Structure Solution Method
Cross Validation method
Starting model
Resolution (High)
Resolution (Low)
Cut-off Sigma (F)
Number Reflections (All)
Number Reflections (Observed)
Number Reflections (R-Free)
Percent Reflections (Observed)
R-Work (Depositor)
R-Work (DCC)
R-Free (Depositor)
R-Free (DCC)
R-Free Selection Details
Mean Isotropic B
X-RAY DIFFRACTION
MOLECULAR REPLACEMENT
THROUGHOUT
2IHM (molecule B) was used as the starting molecule for molecular replacement for a lower resolution structure, which was then used as the starting model for the current higher resolution structure.