A DNA-nanoassembly-based approach to map membrane protein nanoenvironments

Elena Ambrosetti

doi:10.5878/jvvj-1688

A DNA-nanoassembly-based approach to map membrane protein nanoenvironments

https://doi.org/10.5878/jvvj-1688

Most proteins at the plasma membrane are not uniformly distributed but localize to dynamic domains of nanoscale dimensions. To investigate their functional relevance, there is a need for methods that enable comprehensive analysis of the compositions and spatial organizations of membrane protein nanodomains in cell populations. Here we describe the development of a non-microscopy based method for ensemble analysis of membrane protein nanodomains. The method, termed NANOscale DEciphEring of membrane Protein nanodomains (NanoDeep), is based on the use of DNA nanoassemblies to translate membrane protein organization information into a DNA sequencing readout. Using NanoDeep, we characterised the nanoenvironments of Her2, a membrane receptor of critical relevance in cancer. Importantly, we were able to modulate by design the inventory of proteins analysed by NanoDeep. NanoDeep has the potential to provide new insights into the roles of the composition and spatial organization of protein nanoenvironments in the regulation of membrane protein function. The methodology is described in the preprint article (see publications list). The methodology for this dataset is available in the preprint (see publication list) Software for data collection: Biacore T200 System Control software, NextSeq control software Software for data analysis: BIAevaluation v3.0, GraphPad Prism v8.2.1, Fiji ImageJ v1.0, Illumina Sequencing Analysis Viewer software, Python v3.8.0.

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Data files

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