The Chl a Carboxylic Biosynthetic Routes: Reactions Between Mg-Protoporphyrin IX and Protochlorophyllide a

  • Constantin A. Rebeiz
Chapter

Abstract

Mg-protoporphyrin (Mg-Proto) (Fig. 7.1) is the immediate precursor of Mg-proto monomethyl ester (Mpe). The proposed role of Mg-Proto as an intermediate in the Chl biosynthetic pathway was based on the detection of Mg-Proto in X-ray Chlorella mutants inhibited in their capacity to form Chl (Granick 1948). It was conjectured that since the mutants had lost the ability to form Chl but accumulated Mg-Proto, the latter was a logical precursor of Chl. On the basis of absorbance spectroscopic determinations the accumulated Mg-Proto was assigned by Granick a divinyl (DV) Chemical structure (Fig. 7.1, I), with vinyl groups at positions 2 and 4 of the tetrapyrrole macrocycle.

Keywords

Plant Species Chemical Derivatization Biosynthetic Route Cucumber Cotyledon Ping Pong 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  • Constantin A. Rebeiz
    • 1
  1. 1.Rebeiz Foundation for Basic ResearchChampaignUSA

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