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Uptodate Reference Title
Enzymatic formation of porphobilinogen
Enzymatic formation of porphobilinogen
This schematic diagram shows the enzymatic formation of one molecule of the monopyrrole porphobilinogen (PBG, in black) from two molecules of 5-aminolevulinic acid (ALA, in blue), under the catalytic direction of the enzyme ALA dehydratase (ALAD). Bond lengths are not to scale.