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Geranylpyrophosphat
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
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Geranylpyrophosphat (kurz Geranyl-PP oder auch GPP) ist ein BiomolekΓΌl, welches als Baustein in der Terpenbiosynthese zu finden ist. Chemisch gesehen ist es ein Ester aus Geraniol (einem Alkohol mit zwei zusΓ€tzlichen C=C-Doppelbindungen) und der DiphosphorsΓ€ure.
Es entsteht biosynthetisch durch eine Kopf-zu-Schwanz-Kondensation (nukleophile Substitution) aus den beiden Isopreneinheiten Isopentenylpyrophosphat und Dimethylallylpyrophosphat, mithilfe einer Prenyltransferase (Dimethylallyl-trans-Transferase).cite-ref-2[2]
Beim Menschen dient Geranylpyrophosphat zur Synthese von Squalen, einem wichtigen VorlΓ€ufer fΓΌr die Cholesterinsynthese.
Contents
β’ Literatur
β’ Weblinks
β’ Einzelnachweise
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
Literatur
β’ Albert L. Lehninger: Biochemie, 2. Auflage, Weinheim 1983, ISBN 3-527-25688-1, S. 561.
Weblinks
Commons
: Geranylpyrophosphat
β Sammlung von Bildern, Videos und Audiodateien
Einzelnachweise
cite-note-sigma-11. Datenblatt Geranyl pyrophosphate lithium salt bei Sigma-Aldrich, abgerufen am 24. Juli 2018 (PDF).
cite-note-22. β Voet & Voet, Biochemistry (second edition), Wiley & Sonβs, S. 696.
cite-note-33. β Susan C. Trapp, Rodney B. Croteau: Genomic Organization of Plant Terpene Synthases and Molecular Evolutionary Implications; Genetics, 2001, 158: 811β832; https://www.genetics.org/content/158/2/811; PMID 11404343.