A negative deviation from the ideal calibration curve of the oxidized catechol reduction is found in the more concentrated mixtures (>10−5 M) at physiological pH 7.4.
The mixture is then allowed to stand at physiological temperature (37 °C) for a fixed time interval, and the clot formation and its subsequent dissolution is observed (Lu et al. 2010; Ju et al. 2012).
Pickering et al. used chemically selective XFI to show that the chemical form present in the transport vessels was arsenate (a mixture of [HAsO4]2– and [H2AsO4]− at physiological pH), which was transformed to arsenite (As(OH 3) in the tissues.
These species exist as a mixture of their acid and anion forms at physiological pH values (p Ka 7.6, 8.7 and approx. 5.3 respectively; reviewed in [ 1]); HOCl, HOBr and HOSCN are used hereon to indicate the physiological mixtures of these species.
It was found that Listeria moves at physiological rates within a well-controlled mixture of reconstituted proteins instead of cytosol [ 377].
The microgel/PEG mixtures containing no salt do not gel upon heating, however, they gel at physiological pH and ionic strength.
Even so, the mixture appears to be less stable than the pure E180G homodimer at physiological temperatures with a midpoint transition close to 36 °C.
The Pipeline Pilot implementation is shown in Additional file 1: Figure S2 and the workflow is available in Additional file 2. Data curation includes the removal of duplicates, inorganic molecules, mixtures, and salts, the standardization of chemical structures, the determination of protonation states at physiological pH (7.4) and the selection of the tautomeric state.
To identify potentially disease-relevant metastable SOD1 oligomers, we incubated apo-SOD1 at physiological pH, temperature, ionic strength, and SOD1 concentration for up to one week, separating the reaction mixture by size exclusion chromatography (SEC) at multiple time points.
Also since metal chelation can occur at physiological pH it has a physiological significance [21, 22].
