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. Author manuscript; available in PMC: 2010 Mar 25.

Published in final edited form as: Adv Mater. 2010 Jan 5;22(1):120–127. doi: 10.1002/adma.200901945

Performance of a DC biobattery with cation and anion selective α-HL mutants. (A) The cation selective channel (MTSES G133C) uses parameters based on published MTSES treated G133C α-HL mutants. For comparison, calculations using two anion-selective channels are shown: a hypothetical anion selective channel that is as strongly anion specific as the MTSES G133C is cation specific and parameters based on published N123R channels[42]. For each case, the total potential (E_t) is shown along with the contributions due to the channels (E_r) and the electrodes (E_c). (B) The output energy density (W) as a function of ion selectivity (a₁) of the membrane proteins for both cation and anion specific channels. The selectivity reported for specific mutants, MTSES treated G133C and N123R, is highlighted with arrows.

Performance of a DC biobattery with cation and anion selective α-HL mutants. (A) The cation selective channel (MTSES G133C) uses parameters based on published MTSES treated G133C α-HL mutants. For comparison, calculations using two anion-selective channels are shown: a hypothetical anion selective channel that is as strongly anion specific as the MTSES G133C is cation specific and parameters based on published N123R channels[42]. For each case, the total potential (E_t) is shown along with the contributions due to the channels (E_r) and the electrodes (E_c). (B) The output energy density (W) as a function of ion selectivity (a₁) of the membrane proteins for both cation and anion specific channels. The selectivity reported for specific mutants, MTSES treated G133C and N123R, is highlighted with arrows.