Monday, December 1, 2025

BIN1 Localizes the L-Type Calcium Channel to Cardiac T-Tubules

Authors: Ting-Ting Hong, James W. Smyth, Danchen Gao, Kevin Y. Chu, Jacob M. Vogan, Tina S. Fong, Brian C. Jensen, Henry M. Colecraft, Robin M. Shaw

DOI: 10.1371/journal.pbio.1000312

Abstract Summary

Researchers discovered that BIN1, a scaffolding protein in heart cell membrane invaginations, anchors microtubules that transport calcium channels directly to T-tubules—structures critical for cardiac contraction. This finding reveals a key mechanism for how heart cells organize their calcium signaling machinery, with potential implications for understanding heart disease.

Why Brain? 🧠

BIN1 protein guides calcium channels to heart cell membranes via microtubule transport, revealing a key mechanism for proper cardiac electrical signaling and potential heart disease targets.


The image is AI-generated for illustrative purposes only. Courtesy of Midjourney.

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