Related Experiment Video
Updated: Mar 8, 2026

A Micropatterning Assay for Measuring Cell Chirality
Published on: March 11, 2022
Biomimetic Chirality Sensing with Pyridoxal-5'-phosphate
Samantha L Pilicer1, Pegah R Bakhshi1, Keith W Bentley1
1Department of Chemistry, Georgetown University , Washington, D.C. 20057, United States.
This study introduces a new biomimetic assay using pyridoxal-5'-phosphate (PLP) for analyzing amino acids, alcohols, and amines. The method simultaneously determines absolute configuration, enantiomeric composition, and concentration with high sensitivity.
Area of Science:
- Analytical Chemistry
- Biomimetic Chemistry
- Chiral Analysis
Background:
- Accurate determination of enantiomeric composition and absolute configuration is crucial in various scientific fields.
- Existing methods for analyzing chiral compounds can be complex and time-consuming.
Purpose of the Study:
- To develop a novel, rapid, and simultaneous assay for determining the absolute configuration, enantiomeric composition, and concentration of unprotected amino acids, amino alcohols, and amines.
- To utilize a biomimetic indicator displacement assay for enhanced chiral sensing.
Main Methods:
- A biomimetic indicator displacement assay employing pyridoxal-5 omino-phosphate (PLP) as a key reagent.
- Fast imine metathesis between a PLP aryl imine probe and target analytes.
- Circular dichroism (CD) and fluorescence spectroscopy for sensing and analysis.
- Off-on fluorescence response for concentration determination.
Main Results:
- The assay successfully captures target compounds via imine metathesis, enabling CD analysis for enantiomeric excess (ee) determination.
- Characteristic Cotton effects observed upon substrate binding provide insights into absolute configuration.
- A nonenantioselective, composition-independent off-on fluorescence response allows for accurate total analyte concentration measurement.
- The method demonstrates simultaneous determination of absolute configuration, enantiomeric composition, and concentration.
Conclusions:
- The developed PLP-based biomimetic assay offers a powerful tool for the simultaneous chiral analysis of amino acids, amino alcohols, and amines.
- This assay provides a sensitive and efficient method for determining absolute configuration, enantiomeric composition, and concentration.
- The approach holds significant potential for applications in pharmaceutical analysis, biochemistry, and quality control.
More Related Videos
Related Concept Videos
Chirality in Nature
Prochirality
Chirality at Nitrogen, Phosphorus, and Sulfur
A consequence of chirality is the need for enantiomeric resolution. While this is theoretically possible for all...
Chirality
Chiral objects exhibit a sense of handedness when they interact with another chiral object. For example, our left foot can only fit in the left shoe and not in the right shoe. Achiral objects — objects that have...
Molecules with Multiple Chiral Centers
¹H NMR Chemical Shift Equivalence: Enantiotopic and Diastereotopic Protons
In chiral compounds such as 2-butanol, replacing the methylene hydrogens at C3 produces a pair of...

