Mapping the self-organization and spatial distribution of membrane proteins is key to understanding their function. Developing methods that can provide insight into correlations between membrane protein colocalization and interactions is challenging. We report here on a correlated stochastic optical reconstruction microscopy/homoFRET imaging approach for resolving the nanoscale distribution and oligomeric state of membrane proteins. Using live cell homoFRET imaging of carcinoembryonic antigen-related cellular adhesion molecule 1, a cell-surface receptor known to exist in a complex equilibrium between monomer and dimer/oligomer states, we revealed highly heterogeneous diffraction-limited structures on the surface of HeLa cells. Furthermore, correlated super-resolved stochastic optical reconstruction microscopy imaging showed that these structures comprised a complex mixture and spatial distribution of self-associated carcinoembryonic antigen-related cellular adhesion molecule 1 molecules. In conclusion, this correlated approach provides a compelling strategy for addressing challenging questions about the interplay between membrane protein concentration, distribution, interaction, clustering, and function.
Pubmed ID: 36063991 RIS Download
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A software tool primarily proposed for mapping SOLiD reads or Illumina reads to a reference genome. It was based on seeding techniques adapted to the statistical characteristics of the reads: the default seeds are for example designed (using the Iedera software) to comply with the properties of the SOLiD color encoding, or Illumina more classical encoding as well as the observed reading error distribution along the read.
View all literature mentionsSoftware tool for automated processing, analysis, and visualization of data acquired by single molecule localization microscopy methods such as PALM and STORM. ImageJ interactive and modular plugin for SMLM data analysis and super-resolution imaging.
View all literature mentionsCell line HeLa is a Cancer cell line with a species of origin Homo sapiens
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