Skip to main content
. Author manuscript; available in PMC: 2010 Jun 5.
Published in final edited form as: J Mol Biol. 2009 Apr 10;389(2):306–314. doi: 10.1016/j.jmb.2009.04.013

Figure 1. Reaction catalyzed by URO-D.

Figure 1

The four acetate groups of uroporphyrinogen are decarboxylated to form methyl groups and four molecules of CO2. Decarboxylation begins with the D ring and proceeds clockwise to the A, B, and C rings.