All cells (prokaryotic, at least) have some specific aa transporters, most
often coupled energetically to symport of H+ or Na+. Other permeases import
families of similar aa.
non-catalyzed influx of aa is measurable for e.g. Phe (as other small polar
molecules such as glycerol or ethanol also diffuse into the cell),
Patrick J. Fenneran schrieb in Nachricht ...
>If I remember correctly they don't go in as aminos but as oligos. The
enter
>through membrane transport system and hydrophobic interaction with the
>lipids.
>>"Debbie" <debbie_holiday at hotmail.com> wrote in message
>news:A1lQ5.173$%15.61924 at sapphire.mtt.net...>>>>>> How do the amino acids enter the plasma membrane?
>>>>>>
