ELSD HPLC Method for Analysis of 3-Phosphoglyceric acid (3PG) and 2-Phosphoglyceric acid (2PG) on Newcrom B Column

High Performance Liquid Chromatography (HPLC) Method for Analysis of 3-Phosphoglyceric acid (3PG), 2-Phosphoglyceric acid (2PG) on Newcrom B by SIELC Technologies

Separation type: Liquid Chromatography Mixed-mode SIELC Technologies


 High Performance Liquid Chromatography (HPLC) Method for Analysis of 3-Phosphoglyceric acid (3PG), 2-Phosphoglyceric acid (2PG)

3-Phosphoglyceric acid (3PG) and 2-Phosphoglyceric acid (2PG) are both intermediates in the glycolytic pathway and the Calvin cycle.

1. 3-Phosphoglyceric Acid (3PG)

  • Chemical Structure:
  • 3PG has a three-carbon backbone with a phosphate group attached to the third carbon.
  • Molecular formula: C₃H₇O₇P
  • Role in Metabolism:
  • Glycolysis: 3PG is formed from the conversion of fructose 1,6-bisphosphate and is further processed to generate ATP.
  • Calvin Cycle: In photosynthesis, 3PG is produced from ribulose bisphosphate (RuBP) and carbon dioxide, catalyzed by the enzyme ribulose bisphosphate carboxylase/oxygenase (RuBisCO). It is the first stable product of carbon fixation.

2. 2-Phosphoglyceric Acid (2PG)

  • Chemical Structure:
  • 2PG has a three-carbon backbone with a phosphate group attached to the second carbon.
  • Molecular formula: C₃H₇O₇P
  • Role in Metabolism:
  • Glycolysis: 2PG is formed from 3-phosphoglycerate via the enzyme phosphoglycerate mutase. It then undergoes dehydration to form phosphoenolpyruvate (PEP).
  • Calvin Cycle: 2PG can also arise from the isomerization of 3PG, but it is not a primary product in the Calvin cycle.

Summary of Differences

  • Position of Phosphate Group:
  • 3PG: Phosphate group at the third carbon.
  • 2PG: Phosphate group at the second carbon.
  • Metabolic Pathways:
  • Both serve as intermediates in glycolysis and the Calvin cycle, but 3PG is more directly associated with the initial steps of carbon fixation in photosynthesis.

Importance

These compounds are crucial for energy metabolism and biosynthesis in various organisms, including plants, animals, and microorganisms. Understanding their roles helps elucidate metabolic pathways like glycolysis and the Calvin cycle, essential for energy production and carbon fixation.

3-Phosphoglyceric acid (3PG), 2-Phosphoglyceric acid (2PG) can be retained, separated and analyzed using a Newcrom B mixed-mode stationary phase column. The analysis employs an isocratic method with a simple mobile phase comprising water, acetonitrile (MeCN), and formic acid as a buffer. This method allows for detection using ELSD.

ColumnNewcrom B, 4.6 x 150 mm, 5 µm, 100 A
Mobile PhaseMeCN – 50%
BufferFormic Acid – 5%
Flow Rate1.0 ml/min
DetectionELSD, the nebulizer and evaporator temperatures 50°C,
with a gas flow rate of 1.6 Standard Liters per Minute (SLM)
Sample: 1 mg/ml in MeCN/H2O-50/50%
Sample1 mg/mL
DiluentMeCN/H2O- 50/50%

Class of Compounds
Analyzing Compounds3-Phosphoglyceric acid (3PG), 2-Phosphoglyceric acid (2PG)

Application Column

Newcrom B

Column Diameter: 4.6 mm
Column Length: 150 mm
Particle Size: 5 µm
Pore Size: 100 A

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Application Analytes:
2-Phosphoglyceric acid (2PG)
3-Phosphoglyceric acid (3PG)

Application Detection:
ELSD Detection
SIELC Technologies usually develops more than one method for each compound. Therefore, this particular method may not be the best available method from our portfolio for your specific application. Before you decide to implement this method in your research, please send us an email to research@sielc.com so we can ensure you get optimal results for your compound/s of interest.