“…One millimolar l-Arg solutions in the pH range of 5.2-11.0 were exposed to the l-Arg-sensing membrane, whereas the l-Asn-sensing membrane was tested with 0.4 mM l-Asn in the pH range of 5.2-9.3. The l-Arg-sensing membranes were tested at different temperatures (25,30,33,37, and 40°C) at 1, 5, and 10 mM l-Arg, and the l-Asn-sensing membrane was tested at 21, 28, 31, 33, 36, and 40°C at 5 mM l-Asn.…”