Abstract:
:Carotenoids present in lipids extracted from the cyanobacterium Synechococcus 6716 indicate trans-membrane potential in proteoliposomes reconstituted from these lipids and the ATPase complex isolated from the same organism. A carotenoid absorbance band shift to a longer wavelength is obtained with valinomycin-induced potassium ion diffusion potentials, irrespective of the polarity of the potassium gradient. In contrast to this, the (externally added) probe oxonol VI only shows an absorbance band shift when the external potassium ion concentration is higher than the internal one. In liposomes without ATPase complex, no carotenoid absorbance band shifts were observed.
journal_name
FEBS Lettjournal_title
FEBS lettersauthors
van Walraven HS,Krab K,Hagendoorn MJ,Kraayenhof Rdoi
10.1016/0014-5793(85)80661-xsubject
Has Abstractpub_date
1985-05-06 00:00:00pages
96-9issue
1eissn
0014-5793issn
1873-3468pii
0014-5793(85)80661-Xjournal_volume
184pub_type
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