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Grana formation: entropy-assisted local order in chloroplasts?

Chow, Wah S (Fred)

Description

Grana formation is a prominent feature of the ultrastructure of chlorophyll b-containing chloroplasts, serving to fine-tune photosynthetic efficiency. This paper examines the physical forces that determine the state of minimum free energy of the chloroplast as manifested by grana formation. In particular, it considers the interplay of van der Waals attraction, electrostatic repulsion and short-range hydration repulsion between thylakoid membranes. In addition to these interactions as...[Show more]

dc.contributor.authorChow, Wah S (Fred)
dc.date.accessioned2015-12-13T23:40:33Z
dc.date.available2015-12-13T23:40:33Z
dc.identifier.issn0310-7841
dc.identifier.urihttp://hdl.handle.net/1885/94520
dc.description.abstractGrana formation is a prominent feature of the ultrastructure of chlorophyll b-containing chloroplasts, serving to fine-tune photosynthetic efficiency. This paper examines the physical forces that determine the state of minimum free energy of the chloroplast as manifested by grana formation. In particular, it considers the interplay of van der Waals attraction, electrostatic repulsion and short-range hydration repulsion between thylakoid membranes. In addition to these interactions as determinants of the free energy of the system, it is also proposed that ordering of thylakoid membranes and of intramembrane protein complexes is driven by an increase in the overall entropy of the system. This local order may partly come about by an increase in entropy associated with a greater free volume for diffusion of membrane and stromal components.
dc.publisherCSLI Publications
dc.sourceAustralian Journal of Plant Physiology
dc.subjectKeywords: Electrostatic repulsion; Entropy; Grana; Hydration force; Thylakoid stacking
dc.titleGrana formation: entropy-assisted local order in chloroplasts?
dc.typeJournal article
local.description.notesImported from ARIES
local.description.refereedYes
local.identifier.citationvolume26
dc.date.issued1999
local.identifier.absfor060705 - Plant Physiology
local.identifier.ariespublicationMigratedxPub24123
local.type.statusPublished Version
local.contributor.affiliationChow, Wah S (Fred), College of Medicine, Biology and Environment, ANU
local.bibliographicCitation.startpage641
local.bibliographicCitation.lastpage647
dc.date.updated2015-12-12T09:29:32Z
local.identifier.scopusID2-s2.0-0033381539
CollectionsANU Research Publications

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