alcapton
Noun: 1. A chemical compound: Alcapton is an archaic term for a specific organic acid, now more commonly known as homogentisic acid. It is formed in the human body as an intermediate product during the metabolic breakdown of the amino acids tyrosine and phenylalanine.
The term alcapton is primarily used in historical or specialized biochemical contexts to refer to this metabolic intermediate. * The presence of alcapton in urine, causing it to darken upon exposure to air, is a characteristic sign of the metabolic disorder alcaptonuria (now called alkaptonuria).
- Biochemical Pathway: In biochemistry, alcapton (homogentisic acid) is a key intermediate in the catabolic pathway of aromatic amino acids. Its accumulation due to a deficient enzyme leads to the condition alkaptonuria.
- Alkaptonuria (n): The modern spelling for the inherited metabolic disorder historically associated with alcapton, characterized by the accumulation of homogentisic acid.
- Homogentisic acid (n): The contemporary and more precise chemical name for the compound historically termed .
- Alcaptonuric (adj): An archaic adjective describing something related to or affected by alcaptonuria.
- Homogentisic acid (modern equivalent term)
The word alcapton is an obsolete scientific term. Its meaning is highly specific and is essentially synonymous with homogentisic acid. All modern scientific and medical literature uses the term homogentisic acid or discusses the disorder alkaptonuria. The shift in spelling from alcaptonuria to alkaptonuria reflects standardized chemical nomenclature.
- an acid formed as an intermediate product of the metabolism of tyrosine and phenylalanine