Preiss–Handler pathway

Target entity: Preiss–Handler pathway
Context triple: [NAD+, isBiosynthesizedVia, Preiss–Handler pathway]

• A. Leloir pathway of galactose metabolism
  The Leloir pathway of galactose metabolism is the primary biochemical route by which cells convert galactose into glucose-1-phosphate for entry into central energy and biosynthetic pathways.
• B. Calvin cycle
  The Calvin cycle is the series of biochemical reactions in photosynthetic organisms that use carbon dioxide and energy-rich molecules (ATP and NADPH) to synthesize organic sugars.
• C. Warburg effect
  The Warburg effect is a phenomenon in which cancer cells preferentially produce energy through high-rate glycolysis followed by lactic acid fermentation, even in the presence of sufficient oxygen.
• D. Sharpless aminohydroxylation
  Sharpless aminohydroxylation is a stereoselective chemical reaction that converts alkenes into vicinal amino alcohols using a chiral catalyst, widely used in asymmetric synthesis.
• E. DAGL enzyme
  The DAGL enzyme is a key biosynthetic enzyme in the endocannabinoid system that produces the signaling lipid 2-arachidonoylglycerol (2-AG) from diacylglycerol.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Preiss–Handler pathway
Target entity description: The Preiss–Handler pathway is a metabolic route in which cells convert nicotinic acid (niacin) into NAD+, a vital coenzyme involved in redox reactions and energy metabolism.

• A. Leloir pathway of galactose metabolism
  The Leloir pathway of galactose metabolism is the primary biochemical route by which cells convert galactose into glucose-1-phosphate for entry into central energy and biosynthetic pathways.
• B. Calvin cycle
  The Calvin cycle is the series of biochemical reactions in photosynthetic organisms that use carbon dioxide and energy-rich molecules (ATP and NADPH) to synthesize organic sugars.
• C. Warburg effect
  The Warburg effect is a phenomenon in which cancer cells preferentially produce energy through high-rate glycolysis followed by lactic acid fermentation, even in the presence of sufficient oxygen.
• D. Sharpless aminohydroxylation
  Sharpless aminohydroxylation is a stereoselective chemical reaction that converts alkenes into vicinal amino alcohols using a chiral catalyst, widely used in asymmetric synthesis.
• E. DAGL enzyme
  The DAGL enzyme is a key biosynthetic enzyme in the endocannabinoid system that produces the signaling lipid 2-arachidonoylglycerol (2-AG) from diacylglycerol.
• F. None of above. chosen