Today's Hours: 12:00pm - 8:00pm

Search

Filter Applied Clear All

Did You Mean:

Search Results

  • Article
    Rhoads DB, Woo A, Epstein W.
    Biochim Biophys Acta. 1977 Aug 15;469(1):45-51.
    1. The K+ requirment of Escherichia coli is only partially fulfilled by Rb+. The molar growth yield on Rb+ was about 5% of that on K+ and the growth rate in Rb+-supplemented media is lower thatn in K+ influx by any of the four K+ transport systems of E. coli. The high-affinity Kdp system (Km = 2 micron) is poorly traced by 86Rb+. It discriminates against a 86Rb+ tracer at least 1000-fold. The two moderate affinity systems, the high-rate TrkA system (Km = 1.5 mM) and the moderate rate TrkD system (Km = 0.5 mM), discriminate against a 86Rb+ tracer by approximately 10-fold and 25-fold, respectively. 86Rb+ is preferred by the low-rate TrkF system and overestimates its K+ influx by 40%.
    Digital Access Direct to PDF
doi:10.1016/0005-2736(77)90324-8