Definition

1. Noun:
   • A coenzyme form of nicotinamide adenine dinucleotide phosphate (NADP+): "triphosphopyridine" is a biochemical term referring to a specific molecular structure that functions as an essential coenzyme in numerous anabolic reactions, such as lipid and nucleic acid synthesis. It is the oxidized form of NADPH.
   • A pyridine ring with three phosphorus groups: This definition describes the core chemical structure, highlighting it as a derivative of pyridine containing three phosphate groups, which is central to its role in redox reactions.

Usage Examples

• Noun:
  • Triphosphopyridine is a crucial electron acceptor in biosynthetic pathways.
  • The enzyme requires triphosphopyridine as a cofactor to function properly.
  • NADP+, or triphosphopyridine nucleotide, is vital for photosynthesis.

Advanced Usage

• "Triphosphopyridine nucleotide": This is the full, precise name for the coenzyme, often abbreviated as NADP+.
  • The reduction of triphosphopyridine nucleotide to NADPH is a key step in the Calvin cycle.

Variants and Related Words

• NADP+ (noun): The standard abbreviation for triphosphopyridine nucleotide (oxidized form).
  • NADP+ is reduced to NADPH during the light-independent reactions.
• NADPH (noun): The reduced form of the coenzyme (nicotinamide adenine dinucleotide phosphate).
  • NADPH provides the reducing power for carbon fixation.

Synonyms

• NADP+: Nicotinamide adenine dinucleotide phosphate (oxidized form).
• Coenzyme II: An older, less common term for the same molecule.

Related Phrases

• Triphosphopyridine nucleotide reductase: An enzyme that catalyzes reactions involving this coenzyme.
  • The activity of triphosphopyridine nucleotide reductase was measured in the study.

Noun

1. a pyridine ring with three phosphorus groups