Erschienen: 14.03.2012 Abbildung von Dose | The Origin of Life and Evolutionary Biochemistry | 2012

Dose

The Origin of Life and Evolutionary Biochemistry

lieferbar ca. 10 Tage als Sonderdruck ohne Rückgaberecht

128,39 €

inkl. Mwst.

2012. Buch. viii, 476 S. Bibliographien. Softcover

Springer. ISBN 978-1-4684-2117-0

Format (B x L): 17,8 x 25,4 cm

Gewicht: 920 g

In englischer Sprache

Produktbeschreibung

The primary metabolism of protobionts was probably based on the electron transfer reactions regulated by catalysts or photo­ sensitizing pigments. The action of photoreceptive pigments was inevitable in the case of electron transfer leading to light energy storage in the reaction products. The primitive tetrapyrrolic pig­ ments formed abiogenically (porphin, chlorin) as well as their more complicated biogenic analogs (chlorophylls) are capable of photo­ sensitizing electron transfer in systems, having various degrees of molecular complexity. The inorganic photosensitizers (titanium dioxide. zinc oxide. etc.). being excited in the near ultraviolet. are able to perform the same reactions as porphyrins--electron transfer from donor to acceptor molecule (including photoreduction of viologens) or water molecule photooxidation (oxygen liberation). coupled with reduction of ferric compounds and quinones. The in­ organic photosensitizers are not used in biological evolution; actually the inorganic ions entered into tetrapyrrolic cycle. form­ ing effective photocatalysts. Inclusion of pigments into primary membranes led to elaborated coupling between pigments and enzymatic systems. The involvement of the excited pigments into the biocata­ lytic electron transfer chain was prerequisite to effective func­ tion of photosynthetic organisms. REFERENCES 1. Oparin. A. I., "Origin of Life on Earth," Izd. AN SSSR. Moscow. 1957. 2. Gaffron, H., in: "Horizons in Biochemistry" (Kasha. M •• and Pullmann, B •• eds.), p. 59. Academic Press, New York. 1962. 3. Calvin. M •• "Chemical Evolution," C1arendon Press, Oxford. 1969. 4. Pasynsky. A. G.• and Pav1ovskaya. T. E.• Uspekhii khimii 33, 1198 (1964).

Gesamtwerk

Die 8. Auflage ist wieder auf sechs Bände angelegt. Darin finden sich übersichtlich und in systematischer Gliederung Vertragsmuster aus der Feder erfahrener Experten. Jedem dieser Muster folgen Anmerkungen, mit denen der dem Vertragsentwurf zu Grunde liegende Sachverhalt und die Gründe für die Wahl des spezifischen Formulars erläutert werden.

Autoren

  • Dieses Set enthält folgende Produkte:
      Auch in folgendem Set erhältlich:
      • nach oben

        Ihre Daten werden geladen ...