arginine

Thân thiện

A scientist examines a molecular model of arginine in the laboratory.

Definition

1. Noun:
   • A bitter-tasting amino acid found in proteins and necessary for nutrition: Arginine is one of the twenty common amino acids that are the building blocks of proteins in living organisms. It is classified as a semi-essential or conditionally essential amino acid.
   • Its absence from the diet leads to a reduced production of spermatozoa: Arginine plays a crucial role in various bodily functions, including the synthesis of nitric oxide, wound healing, and immune function. A deficiency can negatively impact reproductive health, specifically sperm production.

Usage Examples

• Noun:
  • Arginine is often included in dietary supplements for athletes.
  • The body can synthesize some arginine, but dietary sources are still important.
  • A lack of arginine in the diet has been linked to fertility issues.

Advanced Usage

• In Biochemistry: Arginine is frequently discussed in the context of its role in the urea cycle, a process that removes ammonia from the body.
  • The enzyme arginase converts arginine into ornithine and urea.
• In Medical Contexts: Arginine supplementation is sometimes studied for its potential cardiovascular benefits due to its role as a precursor to nitric oxide, a vasodilator.
  • Intravenous arginine may be administered in certain clinical settings.

Variants and Related Words

• L-arginine (n): The specific, naturally occurring form of arginine found in proteins and used by the body.
  • Most nutritional supplements contain L-arginine.
• Arginase (n): An enzyme that breaks down arginine.
  • Arginase activity is important for nitrogen metabolism.

Synonyms

• Amino acid: The general class of organic compounds to which arginine belongs. (Note: This is a broader category, not a direct synonym for the specific molecule.)
• 2-Amino-5-guanidinopentanoic acid: The systematic IUPAC name for arginine.

Related Phrases and Compounds

• Arginine vasopressin: A hormone whose name incorporates "arginine," indicating its chemical structure.
  • Arginine vasopressin helps regulate water retention in the kidneys.
• Arginine hydrochloride: A salt form of arginine sometimes used in supplements or pharmaceuticals.

Học thuật

Noun

1. a bitter tasting amino acid found in proteins and necessary for nutrition; its absence from the diet leads to a reduced production of spermatozoa