an anion channel from drosophila neurons had the selectivity sequence : no3- ( 1.97 ) greater than br- ( 1.12 ) approximately equal to i- ( 1.03 ) approximately equal to cl- ( 1 ) greater than f- ( 0.32 ) much greater than glutamate ( less than 0.02 ) as estimated by the permeability ratio based on the reversal potential measurement .
C0003075
anion
C0016327
f