Cyclic electron transport around photosystem I in washed thylakoids
A cyclic electron transport pathway around photosystem I, involving membrane-bound FNR, is described that is capable of generating both transmembrane electric field and proton gradient. The major distinctive features of this cycle are that it does not require the presence of soluble ferredoxin or NADPH, it is insensitive to antimycin A, and poising with O/sub 2/ is not necessary for its continuous operation. Moss and Bendall previously detected an antimycin-insensitive component in cyclic electron flow supported by ferredoxin, and suggested the existence of an alternative cyclic pathway such as that reported here. Bound ferredoxin that is presumed to be associated with membrane-bound FNR may also take part in this antimycin-insensitive pathway. 13 refs., 4 figs.
- Research Organization:
- Brookhaven National Lab., Upton, NY (USA). Biology Dept.
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 5159543
- Report Number(s):
- BNL-38631; CONF-860808-4; ON: DE87001368
- Resource Relation:
- Conference: 7. international congress on photosynthesis, Providence, RI, USA, 10 Aug 1986; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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