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Posts by Mari de Sautu

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Grant writing today with close supervision 😅

1 month ago 1 0 0 0
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How to Make Friends as an Adult

"Even in professional contexts, where there are power dynamics to contend with, it helps to “develop a sensitivity for who sees you as a human,” says Sehgal"

Interesting reading for saturday morning. And friends makes us live longer, science showed. Used to be easier
www.nytimes.com/article/how-...

1 month ago 1 0 0 0

I’m deeply grateful to everyone involved in this work, and especially to my great friend and supervisor @irenemangialavori.bsky.social for her guidance and support throughout this project. (4/4)

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In some lipid environments, inhibition is strong; in others, it is reduced or even reversed.

These findings highlight how membrane composition can fine-tune the regulation of a critical calcium pump and the importance of protein–lipid interactions in controlling membrane protein function. (3/4)

1 month ago 0 0 1 0

We explored how the lipid environment surrounding PMCA modulates its inhibition by aluminum. Using biophysical approaches including small-angle X-ray scattering, fluorescence probes, and activity assays, we found that aluminum’s impact on PMCA is highly dependent on membrane context. (2/4)

1 month ago 0 0 1 0
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I’m excited to share another publication from my PhD:
authors.elsevier.com/a/1meGTWFfh2...

The plasma membrane Ca²⁺-ATPase (PMCA) is a key enzyme responsible for maintaining intracellular calcium homeostasis by actively extruding Ca²⁺ from the cell. (1/4)

1 month ago 1 0 1 0

Dissociated VP7 monomers form a single, large, cooperative pore, seen both in cells and in liposomes. An amphipathic VP7 helix is sufficient for perforation, enabling rapid DLP release and immediate viral transcription in the cytosol (3/3).

2 months ago 2 1 0 0
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We show that entry is a two-step membrane insertion process. VP4 spikes switch from upright (attachment) to reversed (insertion of foot domain). This triggers Ca²⁺ leakage from vesicle, Ca2+ signaling and ultimately VP7 dissociation (2/3)

2 months ago 4 2 1 0
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Check out our new preprint! We uncover the full molecular mechanism of rotavirus membrane penetration and cytosolic escape using cryo-ET, live-cell imaging, and single-molecule assays. (1/3)

🔗 biorxiv.org/content/10.6...

2 months ago 72 18 2 1