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Crystal structure of Leucine-, Isoleucine-, Valine-, Threonine-, and Alanine-binding protein from Brucella ovis
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s)
Type
Source
Accession Code
Details
experimental model
Other
structure initially solved via Iodide SAD in oP crystal form, this model was used for Molecular Replacement into mP crystal form
Crystallization
Crystalization Experiments
ID
Method
pH
Temperature
Details
1
VAPOR DIFFUSION, SITTING DROP
9.5
290
Microlytics MCSG1 screen, a2: 100mM CHES/NaOH, pH 9.5, 30% PEG 3000; BrovA.17370.a.B2.PS02137 at 25mg/ml; cryo: Al's oil; tray 257610a2, puck wln2-3; crystal #2 was used for phasing
2
VAPOR DIFFUSION, SITTING DROP
7.5
290
Microlytics MCSG1 screen, c10: 1M LiCl, 100mM Na-acetate, 30% PEG 6000; the crystal was incubated in two cryo/phasing solution for 30sec each: 4.5ul reservoir + 0.5ul of 2.5M NaI in ethylene glycol, and 4ul reservoir + 1ul of 2.5M NaI in ethylene glycol, final 500mM NaI and 20% ethylene glycol; this is a different crystal form: P212121 with a=60.7AA, b=67.26AA, c=94.5AA; this crystal was used for phasing; tray 257610c10, puck ilg3-2
Crystal Properties
Matthews coefficient
Solvent content
2.05
40
2.24
45
Crystal Data
Unit Cell
Length ( Å )
Angle ( ˚ )
a = 62.12
α = 90
b = 46.39
β = 101.62
c = 62.4
γ = 90
Symmetry
Space Group
P 1 21 1
Diffraction
Diffraction Experiment
ID #
Crystal ID
Scattering Type
Data Collection Temperature
Detector
Detector Type
Details
Collection Date
Monochromator
Protocol
1
1
x-ray
100
CCD
RAYONIX MX-225
2010-11-12
M
SINGLE WAVELENGTH
2
2
x-ray
100
CCD
RIGAKU SATURN 944+
2010-11-14
M
SINGLE WAVELENGTH
Radiation Source
ID #
Source
Type
Wavelength List
Synchrotron Site
Beamline
1
SYNCHROTRON
APS BEAMLINE 21-ID-F
0.97872
APS
21-ID-F
2
ROTATING ANODE
RIGAKU MICROMAX-007 HF
1.5418
Data Collection
Overall
ID #
Resolution (High)
Resolution (Low)
Percent Possible (Observed)
R Merge I (Observed)
Rrim I (All)
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
1.3
50
97.9
0.046
0.054
17.96
3.8
85749
83917
-3
10.36
Highest Resolution Shell
ID #
Resolution (High)
Resolution (Low)
Percent Possible (All)
Percent Possible (Observed)
R Merge I (Observed)
Rrim I (All)
Mean I Over Sigma (Observed)
Redundancy
Number Unique Reflections (All)
1
1.3
1.33
96.1
0.517
0.605
2.49
3.7
Refinement
Statistics
Diffraction ID
Structure Solution Method
Cross Validation method
Starting model
Resolution (High)
Resolution (Low)
Cut-off Sigma (F)
Number Reflections (Observed)
Number Reflections (R-Free)
Percent Reflections (Observed)
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
SAD
FREE R-VALUE
structure initially solved via Iodide SAD in oP crystal form, this model was used for Molecular Replacement into mP crystal form