The chloroplast thylakoid membrane system is a molecular conveyor belt

Critchley C. (1988) The chloroplast thylakoid membrane system is a molecular conveyor belt. Acta Applicandae Mathematicae, 19 3: 265-276. doi:10.1007/BF00046878


Author Critchley C.
Title The chloroplast thylakoid membrane system is a molecular conveyor belt
Journal name Acta Applicandae Mathematicae   Check publisher's open access policy
ISSN 0167-8019
Publication date 1988-01-01
Sub-type Article (original research)
DOI 10.1007/BF00046878
Volume 19
Issue 3
Start page 265
End page 276
Total pages 12
Publisher Kluwer Academic Publishers
Subject 2604 Applied Mathematics
2600 Mathematics
1307 Cell Biology
1303 Specialist Studies in Education
1110 Nursing
Abstract Light drives photosynthesis, but paradoxically light is also the most variable environmental factor influencing photosynthesis both qualitatively and quantitatively. The photosynthetic apparatus of higher plants is adaptable in the extreme, as exemplified by its capacity for acclimation to very bright sunny or deeply shaded conditions. It can also respond to rapid changes in light such as sunflecks. In this paper I offer a model that i) explains the thylakoid membrane organisation into grana stacks and stroma lamellae, ii) proposes a role for rapid D1 protein turnover and LHCII phosphorylation, and iii) suggests a mechanism for photoinhibition. I argue that the photosynthetic membrane system is dynamic in three dimensions, so much so that, in the light, it is in constant motion and operates in a manner somewhat analogous to a conveyor belt. D1 protein degradation is proposed to be the motor that drives this system. Photoinhibition is suggested to be due to the arrest of D1 protein turnover.
Keyword light regulation
photoinhibition
photosystem II
reaction centre
sunflecks
thylakoids
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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Created: Tue, 16 Aug 2016, 14:42:05 EST by System User