Gramicidin
<p>Jun 04, 2015 07:58 PM</p>
<p>
mentioned by Peter Kim this week as being the first studied and prototypical
PORE... allowing monovalent cations *eg Na+ to travel unrestriced and
thereby destroying the ion gradient btwn cytoplasm and extracell enviro.</p>
<p>
completely selective for monovalenct cations and ranked in order by their mobilities.
(depdns on hydration shell)... they move thru single file.</p>
<p>
channel is filled with 6 h2o molecules; </p>