Definition

Noun: A non-essential amino acid, one of the 20 amino acids that are the building blocks of proteins in the human body. It is classified as a polar, uncharged amino acid. Its name is derived from asparagus, as it was first isolated from asparagus juice.

Usage

• Biochemistry/Physiology Context: Used to describe this specific amino acid in scientific discussions about protein structure, metabolism, or nutrition.
  • Example: Asparagine is encoded by the codons AAU and AAC in the genetic code.
  • Example: The body can synthesize asparagine, so it is not required in the diet.
• Food Science Context: Referenced when discussing the natural occurrence of amino acids in food sources.
  • Example: Asparagus is a well-known dietary source of asparagine.

Advanced Usage

• In Medical Research: Asparagine is studied in relation to certain metabolic disorders and cancer. For instance, some cancer cells appear to be dependent on external sources of asparagine, leading to research into therapies that limit its availability.
  • Example: The enzyme asparaginase, which breaks down asparagine, is used in the treatment of some leukemias.

Variants and Related Words

• Asparaginase (noun): An enzyme that catalyzes the hydrolysis of asparagine to aspartic acid and ammonia.
• Aspartic acid (noun): Another amino acid; asparagine can be synthesized from or converted into aspartic acid in the body.

Synonyms

• Asn (abbreviation): The standard three-letter abbreviation used in biochemistry.
• N (symbol): The standard one-letter symbol used to represent asparagine in protein sequences.

Notes on Different Meanings

The word "asparagine" has a single, specific scientific meaning as defined above. It does not have common idiomatic or figurative uses.

Noun

1. a crystalline amino acid found in proteins and in many plants (e.g., asparagus)