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'Biosynthesis' in keywords Facet   section ZfN Section C:Volume 033  [X]
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1978 (2)
1Author    J. B. Stothers, A. Stoessl, E.W B WardRequires cookie*
 Abstract    The mechanism of the biological hydroxylation of the isopropenyl side-chain of the sesquiterpene capsidiol, to give 13-hydroxycapsidiol, has been investigated with 13C-N M R techniques, using capsidiol biogenetically enriched with 13C from [l^-^CU] acetate. The results indicate that neither an allylic rearrangement nor the formation of an epoxide intervene in the process. 
  Reference    Z. Naturforsch. 33c, 149—150 (1978); eingegangen am 30. Dezember 1977 
  Published    1978 
  Keywords    Biosynthesis, Capsidiol, 13C-NMR, Phytoalexins, Sesquiterpenes 
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 TEI-XML for    default:Reihe_C/33/ZNC-1978-33c-0149_n.pdf 
 Identifier    ZNC-1978-33c-0149_n 
 Volume    33 
2Author    H. Wesch, R. Jonak, H. Nemetschek-Gansler, H. Riedl, Th NemetschekRequires cookie*
 Title    Der Einfluß von D-Penicillamin auf den Gehalt einiger Organe an Spurenelementen sowie auf die mechanischen Eigenschaften von Kollagen Trace Elements in Several Organs and Mechanical Properties of Collagen under the Influence of D-Penicillamin  
 Abstract    The content of trace elements in several organs of rats under the influence of D-penicillamine (D-PA) was investigated by the neutronactivation-analysis. It could be shown an diminution of Cu, and Co under D-PA-treatment, the content of Fe, Mn, Rb and Zn was not influenced. The investigat­ ed organs didn't show any submicroscopic alterations under D-PA. On isolated collagen fibrils of tail tendon was seen a significantly diminuition of E-moduls. In accordance with Siegel the principal effect of D-PA is thought to block the synthesis of functional groups from Schiff-base crosslink precursors but not to inhibit lysyloxidase by loss of Cu-ions of connective tissue. The thermostability of D-PA influenced fibrils is changed in stretched state only and will be due to the lack of crosslink Schiff-bases; where as the shrinking point of not stretched fibrils shows only aging dependent changes. 
  Reference    Z. Naturforsch. 33c, 346 (1978); eingegangen am 17. März 1978 
  Published    1978 
  Keywords    D-Penicillamin, Trace Elements, Electron Microscopy, Biosynthesis, Cross-Links, Mechanical Properties of Collagen 
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 TEI-XML for    default:Reihe_C/33/ZNC-1978-33c-0346.pdf 
 Identifier    ZNC-1978-33c-0346 
 Volume    33