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Chlorophyll Catabolites - Chemical and Structural Footprints of a Fascinating Biological Phenomenon.

Moser S, Müller T, Oberhuber M, Kräutler B - European J Org Chem (2008)

Bottom Line: It involves colored intermediates only fleetingly and in an (elusive) enzyme-bound form.However, they are effective antioxidants, and may thus also have physiologically beneficial chemical properties.(© Wiley-VCH Verlag GmbH & Co.KGaA, 69451 Weinheim, Germany, 2009).

View Article: PubMed Central - PubMed

Affiliation: Institute of Organic Chemistry and Centre of Molecular Biosciences, University of Innsbruck Innrain 52a, 6020 Innsbruck, Austria, E-mail: bernhard.kraeutler@uibk.ac.at.

ABSTRACT
Twenty years ago, the molecular basis for the seasonal disappearance of chlorophyll was still enigmatic. In the meantime, our knowledge on chlorophyll breakdown has grown considerably. As outlined here, it has been possible to decipher the basic transformations involved in natural chlorophyll breakdown by identification of chlorophyll catabolites in higher plants, and with the help of the synthesis of (putative) catabolic intermediates. In vascular plants, chlorophyll breakdown typically converts the green plant pigments efficiently into colorless and non-fluorescent tetrapyrroles. It involves colored intermediates only fleetingly and in an (elusive) enzyme-bound form. The non-fluorescent chlorophyll catabolites accumulate in the vacuoles of degreened leaves and are considered the products, primarily, of a detoxification process. However, they are effective antioxidants, and may thus also have physiologically beneficial chemical properties.(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009).

No MeSH data available.


Related in: MedlinePlus

Isomerization of the epimeric “primary” FCCs (pFCC and epi-pFCC) is catalysed stereoselectively by the propionic acid function and leads to “primary” NCCs (pNCC and epi-pNCC), as interpreted in terms of the suggested mechanism shown.20,42
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sch5: Isomerization of the epimeric “primary” FCCs (pFCC and epi-pFCC) is catalysed stereoselectively by the propionic acid function and leads to “primary” NCCs (pNCC and epi-pNCC), as interpreted in terms of the suggested mechanism shown.20,42


Chlorophyll Catabolites - Chemical and Structural Footprints of a Fascinating Biological Phenomenon.

Moser S, Müller T, Oberhuber M, Kräutler B - European J Org Chem (2008)

Isomerization of the epimeric “primary” FCCs (pFCC and epi-pFCC) is catalysed stereoselectively by the propionic acid function and leads to “primary” NCCs (pNCC and epi-pNCC), as interpreted in terms of the suggested mechanism shown.20,42
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2965369&req=5

sch5: Isomerization of the epimeric “primary” FCCs (pFCC and epi-pFCC) is catalysed stereoselectively by the propionic acid function and leads to “primary” NCCs (pNCC and epi-pNCC), as interpreted in terms of the suggested mechanism shown.20,42
Bottom Line: It involves colored intermediates only fleetingly and in an (elusive) enzyme-bound form.However, they are effective antioxidants, and may thus also have physiologically beneficial chemical properties.(© Wiley-VCH Verlag GmbH & Co.KGaA, 69451 Weinheim, Germany, 2009).

View Article: PubMed Central - PubMed

Affiliation: Institute of Organic Chemistry and Centre of Molecular Biosciences, University of Innsbruck Innrain 52a, 6020 Innsbruck, Austria, E-mail: bernhard.kraeutler@uibk.ac.at.

ABSTRACT
Twenty years ago, the molecular basis for the seasonal disappearance of chlorophyll was still enigmatic. In the meantime, our knowledge on chlorophyll breakdown has grown considerably. As outlined here, it has been possible to decipher the basic transformations involved in natural chlorophyll breakdown by identification of chlorophyll catabolites in higher plants, and with the help of the synthesis of (putative) catabolic intermediates. In vascular plants, chlorophyll breakdown typically converts the green plant pigments efficiently into colorless and non-fluorescent tetrapyrroles. It involves colored intermediates only fleetingly and in an (elusive) enzyme-bound form. The non-fluorescent chlorophyll catabolites accumulate in the vacuoles of degreened leaves and are considered the products, primarily, of a detoxification process. However, they are effective antioxidants, and may thus also have physiologically beneficial chemical properties.(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009).

No MeSH data available.


Related in: MedlinePlus