PREVIOUS attempts to measure the annual parallax of intense radio stars 1,2 have indicated that their distances exceed 1/50 parsec. These results were obtained by using an interferometer arrangement ...

There is ongoing debate regarding the mechanism through which cation/proton antiporters (CPAs), like Thermus thermophilus NapA (TtNapA) and Escherichia coli NapA (EcNhaA), alternate between their ...