How Copper Transporter CTR1 Regulates Copper Uptake in Cells
Author Information
Author(s): Chen Tai-Yen, Wen Meng-Hsuan, Chen Huanhuan, Yan Guangjie, Zhang Yuteng, Chen Wenkai, Dokholyan Martin, Wang Jian, Dokholyan Nikolay
Primary Institution: University of Houston
Hypothesis
How does the de-oligomerization of CTR1 affect copper uptake and endocytosis?
Conclusion
Excess copper induces the de-oligomerization of CTR1, which halts copper uptake and prevents overload.
Supporting Evidence
- CTR1's structural changes are linked to its ability to regulate copper uptake.
- Excess copper leads to CTR1 de-oligomerization, which prevents further copper entry.
- The M150L mutation in CTR1 disrupts its ability to undergo endocytosis.
- CTR1's endocytosis is essential for maintaining copper homeostasis.
- CTR1's oligomeric state is crucial for its function in copper transport.
Takeaway
When there's too much copper, a protein called CTR1 changes shape to stop more copper from coming in, helping keep cells safe.
Methodology
The study used single-molecule localization microscopy and single-molecule neighbor density assays to investigate CTR1's behavior.
Limitations
All experiments were conducted in fixed samples, limiting the ability to observe real-time dynamics.
Digital Object Identifier (DOI)
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