ISSN:
1432-1424
Keywords:
single-shelled vesicle
;
membrane redox transport, light-induced
;
bluelight effect
;
flavosemiquinone
;
amphiphilic flavin
;
superoxide
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Chemistry and Pharmacology
Notes:
Summary This paper continues our studies of physico-chemical properties of vesicle-bound flavins. Based on previous results, an advanced model system was designed in order to study the mechanisms underlying bluelight-induced redox transport across artificial membranes. The lumen of single-shelled vesicles was charged with cytochromec, and amphiphilic flavin (AF1 3, AF1 10) was bound to the membrane. Upon bluelight irradiation redox equivalents are translocated from exogeneous 1e −(EDTA)-and 2e −(BH3CN−) donors across the membrane finally reducing the trapped cytochromec both under aerobic and anaerobic conditions. The mechanisms involved are explored and evidence for the involvement of various redox states of oxygen, dihydroflavin and flavosemiquinone is presented.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01868936
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