Dehydroalanine

  • DHA
  • 2- Aminopropensäure
  • 2- Aminoacrylic

Template: Infobox chemical / molecular formula search available

Dehydroalanine (DHA ) is an amino acid with the systematic name 2- Aminopropensäure. It arises from the proteinogenic amino acid cysteine ​​with elimination of hydrogen sulfide ( H2S).

Dehydroalanine can react further in proteins with lysine to lysinoalanine (LAL ). This reaction, which proceeds at the thermal process, leading to a crosslinking of the protein structure by means of so-called "cross- links". Thus, the degradability of the protein is affected in the human body.

In the food quality assurance LAL serves as a heating indicator especially in milk. Is the amount of LAL in the sample is too high, the milk was revealed during the heat treatment ( sterilization, pasteurization, etc. ) is either exposed to high temperatures or treatment for long.

Two enzymes with this amino acid are known: phenylalanine ammonia-lyase (plants and fungi) and histidase ( living beings).

CAS registry number PubChem PROSITE
225446
de