Publication Date:
2010-08-21
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.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, Min -- Schliep, Martin -- Willows, Robert D -- Cai, Zheng-Li -- Neilan, Brett A -- Scheer, Hugo -- New York, N.Y. -- Science. 2010 Sep 10;329(5997):1318-9. doi: 10.1126/science.1191127. Epub 2010 Aug 19.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Biological Sciences, University of Sydney, NSW 2006, Australia. min.chen@sydney.edu.au〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20724585" target="_blank"〉PubMed〈/a〉
Keywords:
Bacteriochlorophylls/*chemistry/*isolation & purification
;
Cyanobacteria/*chemistry/classification/genetics/isolation & purification
;
Genes, Bacterial
;
Genes, rRNA
;
Mass Spectrometry
;
Molecular Sequence Data
;
Molecular Structure
;
Nuclear Magnetic Resonance, Biomolecular
;
Photosynthesis
;
Pigments, Biological/*chemistry/*isolation & purification
;
RNA, Ribosomal, 16S/genetics
;
Spectrometry, Fluorescence
;
Western Australia
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
