2009
DOI: 10.1007/s11084-009-9160-y
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Energy Transduction Inside of Amphiphilic Vesicles: Encapsulation of Photochemically Active Semiconducting Particles

Abstract: Amphiphilic bilayer membrane structures (vesicles) have been postulated to have been abiotically formed and spontaneously assemble on the prebiotic Earth, providing compartmentalization for the origin of life. These vesicles are similar to modern cellular membranes and can serve to contain water-soluble species, concentrate species, and have the potential to catalyze reactions. The origin of the use of photochemical energy in metabolism (i.e. energy transduction) is one of the central issues in the origin of l… Show more

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Cited by 28 publications
(23 citation statements)
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“…In principle, such processes would involve light-absorbing pigments either encapsulated as solutes or partitioned into boundary lipid membranes. For instance, encapsulated TiO 2 particles have been shown to reduce the redox indicator MV +2 or NAD + (to NADH) upon irradiation (Summers et al, 2009;Summers et al, 2010).…”
Section: Intracellular Ions and Early Photosynthesismentioning
confidence: 99%
“…In principle, such processes would involve light-absorbing pigments either encapsulated as solutes or partitioned into boundary lipid membranes. For instance, encapsulated TiO 2 particles have been shown to reduce the redox indicator MV +2 or NAD + (to NADH) upon irradiation (Summers et al, 2009;Summers et al, 2010).…”
Section: Intracellular Ions and Early Photosynthesismentioning
confidence: 99%
“…1(b)). The hypochromism effect in DASPMI absorption in presence of cucurbit medium points toward intercalative binding of DASPMI within the DNA base pairs [14,26]. The red shift indicates the binding of the DASPMI in the non-polar region of the DNA i.e., within the base pairs.…”
Section: Absorption Titration Resultsmentioning
confidence: 95%
“…In principle, such processes would involve light-absorbing pigments either encapsulated as solutes or partitioned into boundary lipid membranes. For instance, encapsulated TiO 2 particles have been shown to reduce the redox indicator MV +2 or NAD + (to NADH) upon irradiation (Summers et al, 2009;Summers et al, 2010). Moreover, aqueous suspensions of the mineral sphalerite (ZnS) can photo-reduce CO 2 to formate when illuminated with near-UV light (Zhou and Guzman, 2014), providing a mechanism of prebiotic carbon fixation.…”
Section: Intracellular Ions and Early Photosynthesismentioning
confidence: 99%