Conversely, emissions were predicted to be minimized at the design edges at pH 7.80, single feeding, and continuous aeration.
The pH within single cells was monitored with the fluorescent pH indicator 5- and-6- -carboxy-seminaphtho-rhodafluor-1 acetoxy methyl ester acetate (SNARF-1 AM) as described by Petit et al. [38].
Polystyrene plates were coated overnight at 4°C with actin (Sigma), tubulin (ICN) and thyroglobulin (Sigma) at 5 µg/ml in bicarbonate buffer pH 9.6, single stranded (ss) and DNA (Sigma) at 100 µg/ml in sodium citrate buffer, pH 6.0.
Although the factors which trigger fusion (endocytosis, pH sensitivity, single receptor vs. primary and co-receptor binding, redox change) differ amongst diverse virus families, all viral fusion proteins are thought to share the same basic fusion mechanism [1], [4], [17] [20].
Our ratiometric probe SypHer, highly pH-sensitive but insensitive to superoxide in vitro, recorded changes in matrix pH in single mitochondria.
Induced by a low pH environment, single RNA molecules were released from the virions and snap shot images of this process were acquired.
Third, relatively small changes in pH or single missense mutations are capable of shifting HSPB5 from a weak, transient mode of client interaction to one that involves long-lived co-complexes.
Stable growth rates and constant exogenous parameters during the chemostat fermentation process enabled homogeneity of bacterial cells, and the pH as single parameter was changed to switch from acidogenesis to solventogenesis.
At neutral pH a single peak around 330 nm was observed, representing fluorescence of tryptophans that are readily shielded from the aqueous solvent, for native and glycosylated parvalbumins (not shown).
After neutralization with 3 μl of 3 M sodium acetate pH 5.2, single stranded cDNA samples were purified with QiaQuick PCR Purification Kit (Qiagen, Hilden, Germany) using phosphate wash buffer (5 mM KPO4, 80% ethanol, pH 8.0) and phosphate elution buffer (4 mM KPO4) instead of the wash and elution buffers provided in the kit.
In the present study a kinetic model was developed for the growth and lactic acid production by these two bacteria in pH-controlled single strain batch cultures and whey based medium.
