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Crystal structure of the C-terminal region of striated muscle alpha-tropomyosin at 2.7 angstrom resolution
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s)
Type
Source
Accession Code
Details
experimental model
Other
a specially built 56-residue two-stranded coiled-coil that contains a 24 residue fragment from the high resolution structure of the GCN4 leucine zipper
Crystallization
Crystalization Experiments
ID
Method
pH
Temperature
Details
1
VAPOR DIFFUSION, SITTING DROP
8.3
295
PEG 550 monomethylether, glycerol, sodium chloride, magnesium acetate, bicine, tris buffer, dithiothreitol, pH 8.3, VAPOR DIFFUSION, SITTING DROP, temperature 295K
Crystal Properties
Matthews coefficient
Solvent content
4.12
70
Crystal Data
Unit Cell
Length ( Å )
Angle ( ˚ )
a = 137.202
α = 90
b = 137.202
β = 90
c = 40.071
γ = 120
Symmetry
Space Group
P 64 2 2
Diffraction
Diffraction Experiment
ID #
Crystal ID
Scattering Type
Data Collection Temperature
Detector
Detector Type
Details
Collection Date
Monochromator
Protocol
1
1
x-ray
95
CCD
ADSC QUANTUM 4
mirrors
2001-04-20
M
SINGLE WAVELENGTH
Radiation Source
ID #
Source
Type
Wavelength List
Synchrotron Site
Beamline
1
SYNCHROTRON
CHESS BEAMLINE A1
0.909
CHESS
A1
Data Collection
Overall
ID #
Resolution (High)
Resolution (Low)
Percent Possible (Observed)
R Merge 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
2.6
50
99.9
0.052
34.9
12
7229
7221
2
2
82.3
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)
2.6
2.69
99.9
0.217
9.14
8.2
708
Refinement
Statistics
Diffraction ID
Structure Solution Method
Cross Validation method
Starting model
Resolution (High)
Resolution (Low)
Number Reflections (All)
Number Reflections (Observed)
Number Reflections (R-Free)
Percent Reflections (Observed)
R-Factor (All)
R-Factor (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 using a specially built model
THROUGHOUT
a specially built 56-residue two-stranded coiled-coil that contains a 24 residue fragment from the high resolution structure of the GCN4 leucine zipper