A Red-shifted chlorophyll | Macquarie University ResearchOnline

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Title: A Red-shifted chlorophyll
Related: Science, Vol. 329, Issue 5997 (2010), p.1318-1319
DOI: 10.1126/science.1191127
Publisher: American Association for the Advancement of Science
Date: 2010
FoR/RFCD Code(s): 060100 Biochemistry and Cell Biology
Author/Creator: Chen, Min
Author/Creator: Schliep, Martin
Author/Creator: Willows, Robert D
Author/Creator: Cai, Zheng-Li
Author/Creator: Neilan, Brett A
Author/Creator: Scheer, Hugo
Description: Chlorophylls are essential for light-harvesting and energy transduction in photosynthesis. Four chemically distinct varieties have been known for the past 60 years. Here we report isolation of a fifth, which we designate chlorophyll f. Its in vitro absorption (706 nanometers) and fluorescence (722 nanometers) maxima are red-shifted compared to all other chlorophylls from oxygenic phototrophs. On the basis of the optical, mass, and nuclear magnetic resonance spectra, we propose that chlorophyll f is [2-formyl]-chlorophyll a (C₅₅H₇₀O₆N₄Mg). This finding suggests that oxygenic photosynthesis can be extended further into the infrared region and may open associated bioenergy applications.
Description: 2 page(s)
Subject Keyword: 060100 Biochemistry and Cell Biology
Subject Keyword: chlorophyll f
Subject Keyword: cyanobacteria
Subject Keyword: photosynthesis
Resource Type: journal article
Organisation: Macquarie University. Dept. of Chemistry and Biomolecular Sciences

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