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אסיף מאגר המחקר החקלאי
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Cytochrome b of Isolated Chloroplasts
Year:
1970
Source of publication :
European Journal of Biochemistry
Authors :
Ben Hayyim, Gosal
;
.
Volume :
14
Co-Authors:
BEN Hayyim, G., Biochemistry Department, Weizmann Institute of Science, P. O. Box 26, Rehovot, Israel
Avron, M., Biochemistry Department, Weizmann Institute of Science, P. O. Box 26, Rehovot, Israel
Facilitators :
From page:
205
To page:
213
(
Total pages:
9
)
Abstract:
Cytochrome composition and light‐induced absorbance changes of cytochromes b and f in isolated chloroplasts have been measured in the α‐band region utilizing dual‐wavelength spectrophotometry. Three cytochromes appeared in reduced minus oxidized spectra, whereas only two of them, namely, cytochrome f and a cytochrome b appeared in light‐induced difference spectra. Light‐induced changes of cytochrome b and cytochrome f, indicated that both are located in the part of the electron transport chain joining the two photosystems. The following sequence is supported by the evidence presented: Photosystem 2 → cytochrome b→ cytochrome f→ photosystem 1. 3‐(3,4‐Dichlorophenyl)‐1,1‐dimethyl urea was found to act in the region between photosystem 2 and cytochrome b since the photoinduced oxidation of both cytochromes but not of their reduction were observed in its presence. A site for ATP formation is suggested to be localized in the same region, since in the light the presence of uncouplers or photophosphorylating reagents induced a more reduced steady‐state of both cytochromes. Copyright © 1970, Wiley Blackwell. All rights reserved
Note:
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More details
DOI :
10.1111/j.1432-1033.1970.tb00279.x
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
31241
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:01
Scientific Publication
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