Figure 1: Liposome-based nitrite-flux assay of NarK. Figure 3: Structural comparison of the occluded and inward-open states. Figure 4: The structural change in the cytosolic transport pathway of NarK.

The appearance of tobacco-specific nitrosamines is facilitated by the nitrite present in tobacco. Since most of these nitrosamines are carcinogenic, it is essential to determine the presence of ...

Cations can be identified with flame tests or precipitate tests using sodium hydroxide and ammonia solutions. Anions (halide, sulfate, and carbonate ions) can be identified using precipitate tests or ...

Nitrate ion is a common pollutant produced by municipal waste treatment systems, agricultural run-offs, and livestock waste. Although an essential component of fertilizers and necessary for growing ...

Neutral carrier-based liquid membrane ion-selective microelectrodes for NH4 + and NO3 - were developed and used to investigate inorganic nitrogen acquisition in two varieties of barley, Hordeum ...