Mass Photometry

doi:10.1146/annurev-biophys-061824-111652

Mass Photometry

2025-05-06

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DOI：10.1146/annurev-biophys-061824-111652

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Abstract

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Mass photometry (MP) is a technology for the mass measurement of biological macromolecules in solution. Its mass accuracy and resolution have transformed label-free optical detection into a quantitative measurement, enabling the identification of distinct species in a mixture and the characterization of their relative abundances. Its applicability to a variety of biomolecules, including polypeptides, nucleic acids, lipids, and sugars, coupled with the ability to quantify heterogeneity, interaction energies, and kinetics, has driven the rapid and widespread adoption of MP across the life sciences community. These applications have been largely orthogonal to those traditionally associated with microscopy, such as detection, imaging, and tracking, instead focusing on the constituents of biomolecular complexes and their change with time. Here, we present an overview of the origins of MP, its current applications, and future improvements that will further expand its scope.

Keywords:

mass photometry

protein-protein interactions

macromolecular

complexes

biomolecular mechanisms

membrane-associated dynamics

single molecule

Mass Photometry

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