oxalacetate

Thân thiện

A scientist adds oxalacetate to a test tube in a laboratory.

Definition

Noun: 1. A salt or ester of oxalacetic acid: Oxalacetate is a chemical compound that is either the salt form (where the acidic hydrogen of oxalacetic acid is replaced by a metal or other cation) or the ester form (where the acidic hydrogen is replaced by an organic group) of oxalacetic acid. It is a key intermediate in several fundamental metabolic pathways in living organisms.

Usage Examples

• Noun:
  • Oxalacetate is a crucial substrate in the citric acid cycle.
  • The enzyme catalyzes the conversion of malate to oxalacetate.
  • Researchers measured the cellular concentration of oxalacetate.

Advanced Usage

• Biochemical Context: In biochemistry, "oxalacetate" almost exclusively refers to the anionic form (OAA) of oxalacetic acid that participates in cellular metabolism. It is a four-carbon molecule central to the citric acid cycle (Krebs cycle), gluconeogenesis, and amino acid synthesis.
  • The availability of oxalacetate can regulate the rate of the citric acid cycle.

Variants and Related Words

• Oxaloacetate (n): This is the more common modern spelling and is used interchangeably with "oxalacetate." Both refer to the same compound.
  • Oxaloacetate is formed from pyruvate by the enzyme pyruvate carboxylase.
• Oxalacetic Acid (n): The parent dicarboxylic acid from which oxalacetate is derived.
• OAA (n): A common initialism for Oxaloacetate/Oxalacetate.

Synonyms

• Oxaloacetate (n): The synonymous spelling.

Related Concepts (Not Synonyms)

• Metabolite (n): A substance involved in metabolism. Oxalacetate is a key metabolite.
• Intermediate (n): A chemical compound formed in one step of a pathway and consumed in the next. Oxalacetate is a critical metabolic intermediate.
• Krebs Cycle Intermediate (n): A substance that is part of the citric acid cycle.

Học thuật

Noun

1. a salt or ester of oxalacetic acid

Từ đồng nghĩa

• oxaloacetate