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Biomolecular discrimination analyses by surface plasmon resonance.

Subash C B Gopinath1, Penmetcha K R Kumar

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Summary

This study demonstrates effective biomolecular discrimination of closely related species using specific sensor chips. Human and rabbit IgG, along with human clotting factors, were successfully differentiated.

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Area of Science:

  • Biochemistry
  • Immunology
  • Analytical Chemistry

Background:

  • Biomolecular discrimination is crucial for differentiating closely related species.
  • Various sensing systems have been explored for enhanced biomolecule detection.
  • Immunoglobulin G (IgG) and clotting factors are key biomolecules in biological systems.

Purpose of the Study:

  • To investigate the discrimination capabilities of carboxymethylated dextran coated sensor chips.
  • To differentiate between human and rabbit IgG using the developed sensing system.
  • To analyze the discrimination of human clotting factors.

Main Methods:

  • Utilized Biacore technology for real-time biomolecular interaction analysis.
  • Employed carboxymethylated dextran coated sensor chips as the sensing surface.
  • Performed assays with purified human and rabbit IgG and human clotting factors.

Main Results:

  • The sensor chips exhibited distinct binding responses for human and rabbit IgG.
  • Successful discrimination between the two IgG species was achieved.
  • The system demonstrated the ability to differentiate various human clotting factors.

Conclusions:

  • Carboxymethylated dextran coated sensor chips are effective for biomolecular discrimination.
  • This method offers a reliable approach for distinguishing closely related species like human and rabbit IgG.
  • The sensing system shows potential for analyzing complex biological samples containing clotting factors.