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  • Studies on isoprenoid biosynthesis in Euglena gracilis

    Creator:
    Kim, Dojung
    Abstract:
    This dissertation describes studies of isoprenoid biosynthesis in the phytoflagellate Euglena gracilis. Elucidation of a novel isoprerioid pathway, the 2-Cmethyl-D-erythritol-4-phosphate (MEP) pathway, in addition to the generally known mevalonate (MVA) pathway, led to extensive exploration of the distribution of both pathways in a variety of organisms. To date, photosynthetic eukaryotes...
    Resource Type:
    Dissertation
    Full Text:
    enzyme acetoacetyl-CoA thiolase (EC 2.3.1.9) to produce acetoacetyl-CoA. In the second step, 3-hydroxy-3

  • Functional analysis of the biosynthetic gene cluster of the antitumor agent cetoniacytone A

    Creator:
    Wu, Xiumei
    Abstract:
    A gene cluster responsible for the biosynthesis of the antitumor agent cetoniacytone A was identified in Actinomyces sp. strain Lu 9419, an endosymbiotic bacteria isolated from the intestines of the rose chafer beetle. The nucleotide sequence analysis of the 26 Kb DNA region revealed the presence of 17 complete ORFs,...
    Resource Type:
    Dissertation

  • Structure elucidation and biosynthetic investigations of marine cyanobacterial secondary metabolites

    Creator:
    Nogle, Lisa Marie
    Abstract:
    This thesis details my investigations of marine cyanobacterial natural products that resulted in the discovery of thirteen new secondary metabolites, the isolation of over fifteen previously reported metabolites and the biosynthetic investigation of two additional cyanobacterial compounds. Two novel lipopeptides were identified from a Lyngbya majuscula and Schizothrix sp. assemblage...
    Resource Type:
    Dissertation
    Full Text:
    Doublet DHiv Dihydroxyisovaleric acid DMSO Dimethylsulfoxide EC Effective Concentration EtOAc Ethyl

  • Structure elucidation of bioactive natural products from Madagascar marine algae and cyanobacteria

    Creator:
    Andrianasolo, Eric Hajaniriana
    Abstract:
    This thesis is an investigation of the natural products deriving from marine algae and cyanobacteria and has resulted in the discovery of eleven new secondary metabolites. The structure elucidations of these new molecules were performed using a variety of spectroscopic techniques. Four new macrolides were isolated and characterized from the...
    Resource Type:
    Dissertation
    Full Text:
    Dimethylsulfoxide DNMT-1 DNA Methyltransferase 1 EC Effective Concentration EDTA Ethylenediaminetetraacetic