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Cori Ester as the Ligand for Monovalent Cations
Krystyna Stępniak1, Tadeusz Lis2, Elżbieta Łastawiecka1
1Faculty of Chemistry, Maria Curie-Skłodowska University, 20-031 Lublin, Poland.
Molecules (Basel, Switzerland)
|May 11, 2024
Summary
Researchers explored glucose-1-phosphate complexes, discovering new ammonium and mixed cation forms. NMR studies confirmed the rigid structure of glucose-1-phosphate in various crystalline states.
Area of Science:
- Biochemistry
- Crystallography
- Structural Chemistry
Background:
- The Cori cycle involves glucose metabolism and the role of glucose-1-phosphate.
- The crystal structures of several glucose-1-phosphate salts were previously known.
Purpose of the Study:
- To synthesize and characterize new complexes of glucose-1-phosphate with various cations.
- To investigate the structural properties of these new complexes using X-ray diffraction and NMR spectroscopy.
Main Methods:
- Crystallization of glucose-1-phosphate with ammonium, potassium, and sodium ions.
- X-ray diffraction analysis of the resulting crystalline complexes.
- 1D and 2D Nuclear Magnetic Resonance (NMR) spectroscopy to study conformation in solution.
Main Results:
- New ammonium and mixed potassium-sodium/ammonium-sodium glucose-1-phosphate complexes were synthesized.
- The crystal structure of a novel ammonium-potassium complex, Glc-1PH(NH4)xK1-x (x = 0.67), was determined.
- NMR data indicated that the glucose-1-phosphate ligand maintains a rigid conformation in solution, similar to its solid-state structure.
Conclusions:
- The study expands the known structural diversity of glucose-1-phosphate complexes.
- The findings provide insights into cation coordination and ligand conformation in these biologically relevant molecules.
Keywords:
Cori esterNMR spectraammonium complexammonium sodium complexcrystal structurepotassium complexpotassium sodium complexsodium complexα-D-glucose-1-phosphateMore Related Videos
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