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פותח על ידי קלירמאש פתרונות בע"מ -
Light‐Induced Absorbance Changes of the High‐Potential Cytochrome b559 in Chloroplasts
Year:
1974
Source of publication :
European Journal of Biochemistry
Authors :
בן חיים, גוזל
;
.
Volume :
41
Co-Authors:
Ben‐Hayyim, G.
Facilitators :
From page:
191
To page:
196
(
Total pages:
6
)
Abstract:
Light‐induced absorption changes of cytochrome b559 have been studied in isolated chloroplast preparations at room temperature. It was shown that cytochrome b559 could undergo both photooxidation and photoreduction, both these reactions occurring to its high‐potential form. In the presence of FCCP and DCMU, a reversible photoreduction could be detected which was not sensitive to the presence of oxygen and which was probably a result of a cyclic electron flow around photosystem 2. It is suggested that the high‐potential form of cytochrome b559, which is the native form, is mainly photooxidized by photosystem 2. The photoreduction is also mediated by photosystem 2 and can be detected only when electrons cannot flow from photosystem 2 to photosystem 1, i.e. in the presence of DCMU, or when the carriers are fully reduced in the absence of an electron acceptor. Copyright © 1974, Wiley Blackwell. All rights reserved
Note:
Related Files :
chlorophyll
Chloroplasts
Cytochromes
Hydroxylamines
light
microorganism
Nitriles
Plants
עוד תגיות
תוכן קשור
More details
DOI :
10.1111/j.1432-1033.1974.tb03259.x
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
26031
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:19
Scientific Publication
Light‐Induced Absorbance Changes of the High‐Potential Cytochrome b559 in Chloroplasts
41
Ben‐Hayyim, G.
Light‐Induced Absorbance Changes of the High‐Potential Cytochrome b559 in Chloroplasts
Light‐induced absorption changes of cytochrome b559 have been studied in isolated chloroplast preparations at room temperature. It was shown that cytochrome b559 could undergo both photooxidation and photoreduction, both these reactions occurring to its high‐potential form. In the presence of FCCP and DCMU, a reversible photoreduction could be detected which was not sensitive to the presence of oxygen and which was probably a result of a cyclic electron flow around photosystem 2. It is suggested that the high‐potential form of cytochrome b559, which is the native form, is mainly photooxidized by photosystem 2. The photoreduction is also mediated by photosystem 2 and can be detected only when electrons cannot flow from photosystem 2 to photosystem 1, i.e. in the presence of DCMU, or when the carriers are fully reduced in the absence of an electron acceptor. Copyright © 1974, Wiley Blackwell. All rights reserved
Scientific Publication
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