The enzyme, characterized from hop (Humulus lupulus), catalyses two successive prenylations of a 2-acyl-4-prenylphloroglucinol during the synthesis of bitter acids. Forms a complex with EC 2.5.1.136, 2-acylphloroglucinol 4-prenyltransferase, which catalyses the initial prenylation of the substrates. Requires Mg2+.
The expected taxonomic range for this enzyme is: Humulus lupulus
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PATHWAY SOURCE
PATHWAYS
MetaCyc
adlupulone and adhumulone biosynthesis, colupulone and cohumulone biosynthesis, hyperforin and adhyperforin biosynthesis, lupulone and humulone biosynthesis
The enzyme, characterized from hop (Humulus lupulus), catalyses two successive prenylations of a 2-acyl-4-prenylphloroglucinol during the synthesis of bitter acids. Forms a complex with EC 2.5.1.136, 2-acylphloroglucinol 4-prenyltransferase, which catalyses the initial prenylation of the substrates. Requires Mg2+.
prenyltransferase PT2 catalyzes the last two prenylation steps in the beta-bitter acid pathway. Coexpression of codon-optimized prenyltransferases PT1L and PT2 in yeast leads to the production of bitter acids. PT1L/PT2 forms and functions as a complex in membranes. PT1L catalyzes the first prenylation step, and PT2 catalyzes the two subsequent prenylation steps
mutation of the Asp in Asp-rich motifs in PT1L to Ala and coexpression with wild-type prenyltransferase, the mutant strain does not produce any prenylated products. A truncated variant lacking 83 amino acid from the start codon, displays much higher activity than wild-type
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