title: Strictosidine
text: # Strictosidine
  
  Strictosidine is a natural chemical compound and is classified as a glucoalkaloid and a vinca alkaloid. It is formed by the Pictet–Spengler condensation reaction of tryptamine with secologanin, catalyzed by the enzyme strictosidine synthase. Thousands of strictosidine derivatives are sometimes referred to by the broad phrase of monoterpene indole alkaloids. Strictosidine is an intermediate in the biosynthesis of numerous pharmaceutically valuable metabolites including quinine, camptothecin, ajmalicine, serpentine, vinblastine, vincristine and mitragynine.
  
  Biosynthetic pathways help to define the subgroups of strictosidine derivatives.
  
  ## Distribution
  
  Strictosidine is found in the following plant families:
  
  * Apocynaceae
  
  Here especially in Rhazya stricta and Catharanthus roseus.
  
  * Loganiaceae
  * Rubiaceae
  * Icacinaceae
  * Nyssaceae
  * Alangiaceae
  
  Recent efforts in metabolic engineering have permitted the synthesis of strictosidine by yeast (Saccharomyces cerevisiae). This was accomplished by adding 21 genes and 3 gene deletions.
  
  ## Research
  
  The involvement of the glucoalkaloid strictosidine in the antimicrobial and antifeedant activity of Catharanthus roseus leaves was studied. Strictosidine and its deglucosylation product, specifically formed by the enzyme strictosidine glucosidase, were found to be active against several microorganisms.
  
  