canavanine

Thân thiện

A scientist examines a sample of canavanine in the laboratory.

Definition

Noun: * An amino acid found in the jack bean: Canavanine is a non-proteinogenic amino acid, meaning it is not used by the body to build proteins in the same way as standard amino acids. It is structurally similar to the amino acid arginine and is primarily known as a natural toxin produced by certain plants, like the jack bean, as a defense mechanism against insects and microorganisms.

Usage Examples

• Noun:
  • The plant's resistance to pests is attributed to the presence of canavanine in its seeds.
  • Researchers are studying the toxic effects of canavanine on insect metabolism.
  • Canavanine can be mistakenly incorporated into proteins in place of arginine, causing them to malfunction.

Advanced Usage

• Biochemical Antagonist: In biochemistry, canavanine is described as an antimetabolite or analog of arginine. It competes with arginine during protein synthesis, leading to the production of non-functional proteins.
  • The study demonstrated how canavanine acts as a potent arginine antagonist in cell cultures.

Variants and Related Words

• Canavaninosuccinate (n): A biochemical compound involved in the metabolic pathway for the breakdown of canavanine in some organisms.
• L-Canavanine (n): The specific, naturally occurring form (stereoisomer) of the canavanine molecule.

Synonyms

• Arginine analog: A substance that mimics the structure of arginine.
• Non-proteinogenic amino acid: An amino acid not incorporated into standard proteins.

Notes on Different Meanings

• Canavanine has one primary meaning as a specific biochemical compound. It does not have common idiomatic or figurative uses. Its significance is almost entirely within the fields of biochemistry, plant physiology, and toxicology.

Học thuật

Noun

1. an amino acid found in the jack bean