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Novel Product Chemistry from Mechanistic Analysis of Ent-copalyl Diphosphate Synthases from Plant Hormone Biosynthesis

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Specialty Chemistry
Date 2014 May 28
PMID 24862907
Citations 35
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Abstract

An active-site water molecule coordinated by conserved histidine and asparagine residues seems to serve as the catalytic base in all ent-copalyl diphosphate synthases (CPSs). When these residues are substituted by alanine, the mutant CPSs produce stereochemically novel ent-8-hydroxy-CPP. Given the requisite presence of CPSs in all land plants for gibberellin phytohormone biosynthesis, such plasticity presumably underlies the observed extensive diversification of the resulting labdane-related diterpenoids.

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