Abstract:
:A recent report of electrical measurements on oriented bacteriorhodopsin in gels [(1986) FEBS Lett. 195, 164 168] concluded that low concentrations of diamines reversed the direction of the proton pump. Calculations are presented which show that in low diamine concentrations, charge displacements of the counterion atmosphere in the direction opposite to proton pumping are expected following H+ ejection. It is also shown that the effect will be sharply reduced by raising the diamine concentration or by adding excess salt, as was observed. Hence it is not necessary to conclude that diamines reverse the direction of the proton pump itself.
journal_name
FEBS Lettjournal_title
FEBS lettersauthors
Marinetti Tdoi
10.1016/0014-5793(87)80775-5subject
Has Abstractpub_date
1987-05-25 00:00:00pages
155-8issue
1eissn
0014-5793issn
1873-3468pii
0014-5793(87)80775-5journal_volume
216pub_type
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