More current with less calcium: Computational models help solve longstanding ion channel evolution mystery
In the early 1980s, scientists observed an anomaly. Embedded within cell membranes, they identified ion channels with extraordinarily high conductance. These so-called "BK" (Big K, or Big Potassium) channels had roughly 10 times the unitary conductance (i.e., conductance per indi
The discovery of BK channels in the 1980s presented a puzzle that has taken decades to unravel. These ion channels, found in cell membranes, exhibited unusually high conductance, allowing potassium ions to flow through at an incredible rate. The mystery surrounding their evolution has been a subject of interest in the scientific community, with researchers seeking to understand how these channels developed and diversified over time.
Recent advances in computational modeling have helped shed light on this longstanding mystery. By analyzing the structure and function of BK channels, researchers have been able to reconstruct their evolutionary history. It appears that modern BK channels have lower calcium sensitivity compared to their ancient counterparts. This finding has significant implications for our understanding of cellular physiology and the regulation of ion channels.
As researchers continue to explore the evolution of ion channels, it's essential to watch for further insights into the relationships between channel structure, function, and evolution. Specifically, the development of more sophisticated computational models and the integration of experimental and computational approaches will likely provide a deeper understanding of the complex mechanisms governing ion channel function. The intersection of computational biology, structural biology, and electrophysiology will be an exciting area to follow in the coming years.
Originally reported by phys.org. LearningWire adds analysis for science & discovery readers.