Definition

1. Noun:
   • An amino acid occurring in proteins: Glutamic acid is one of the twenty standard amino acids that are the building blocks of proteins in living organisms.
   • Important in the nitrogen metabolism of plants: It plays a crucial role in how plants process and utilize nitrogen.
   • Used in monosodium glutamate to enhance the flavor of meats: Its sodium salt form, monosodium glutamate (MSG), is a common flavor enhancer, particularly in savory dishes.

Usage Examples

• Noun:
  • Glutamic acid is a non-essential amino acid, meaning the human body can produce it.
  • The study focused on the role of glutamic acid in plant physiology.
  • The ingredient list includes glutamic acid as a natural flavor enhancer.

Advanced Usage

• In Biochemistry: Often discussed in the context of neurotransmitters, as it functions as an excitatory neurotransmitter in the human brain.
  • The release of glutamic acid at the synapse is critical for signal transmission.
• In Food Science: Referred to when discussing "umami," the fifth basic taste, which is associated with glutamic acid and its salts.
  • The savory taste of tomatoes is partly due to the presence of glutamic acid.

Variants and Related Words

• Glutamate (n): The anionic form of glutamic acid, especially common in biological and food contexts.
  • Sodium glutamate is widely used as a food additive.
• Monosodium Glutamate (MSG) (n): The sodium salt of glutamic acid, specifically used as a flavor enhancer.
  • Some recipes call for a pinch of monosodium glutamate.

Synonyms

• L-Glutamic Acid: The specific, naturally occurring form (isomer) of the amino acid.
• Glu (abbreviation): The standard three-letter abbreviation used in molecular biology and biochemistry.

Related Phrases and Compounds

• Glutamic acid decarboxylase: An enzyme that converts glutamic acid into another neurotransmitter, gamma-aminobutyric acid (GABA).
• Glutamic acid residue: Refers to a single unit of glutamic acid within a protein chain.

Noun

1. an amino acid occurring in proteins; important in the nitrogen metabolism of plants; used in monosodium glutamate to enhance the flavor of meats