delta (delta)-aminolevulinic acid
del·ta (δ)-a·mi·no·lev·u·lin·ic ac·id(ALA) (del'tă ă-mē'nō-lev-yū-lin'ik as'id)
An acid formed by δ-aminolevulinate synthase from glycine and succinyl-coenzyme A; a precursor of porphobilinogen, hence an important intermediate in the biosynthesis of hematin. ALA levels are elevated in cases of lead poisoning.
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