Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Demethoxycarbonyl reaction of Pheid a to PyroPheid a catalyzed by PPD. The reaction is composed of two steps: enzymatic conversion of Pheid a to a precursor, C-132-carboxylPyroPheid a, followed by spontaneous conversion of the precursor to PyroPheid a. The site of the enzymatic reaction is indicated by a black arrow.
