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Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology
A proximity-dependent biotinylation map of a human cell
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Conflicts of Interest
Identified Weaknesses
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Paper Summary
Paperzilla title
Mapping the Neighborhood: Where Proteins Hang Out in Cells
Researchers created a detailed map of protein locations within a human cell using a proximity-based labeling technique. They identified over 4,000 proteins across 20 different cellular compartments and discovered new proteins important for mitochondrial health, showcasing the power of their new online resource, humancellmap.org.
Possible Conflicts of Interest
None identified
Identified Weaknesses
Long Biotinylation times
The methodology could also be applied in a dynamic fashion to observe what happens to the localization of proteins before and after a stimulus like a drug is added. However, the longer biotinylation times could obscure protein relocalization and compartmentalization changes after a stimulus is added.
Single Cell Type
The humancellmap is only based on a single cell type HEK293 cells and would need to be extended to other relevant cell lines in the future.
Limited Independent Validation
While the authors did validate some of their findings with immunofluorescence, larger-scale independent validation methods would help to gain greater confidence in their findings.
Rating Explanation
This research uses an innovative approach to map protein localization in living human cells, going beyond traditional methods. The large-scale dataset and online resource they created are valuable contributions to cell biology. While limited to a single cell type and potentially affected by long biotinylation times, the work is well-executed and provides a strong foundation for future studies.
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File Information
Original Title:
A proximity-dependent biotinylation map of a human cell
File Name:
document.pdf
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File Size:
6.36 MB
Uploaded:
July 14, 2025 at 05:08 PM
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