10/09/2026
Discovery Report
Activating sperm
CatSper is a sperm-specific calcium channel essential for male fertility that is activated by changes in pH and temperature, but how these signals are integrated remains unclear. Billy Zhao, Ziao Fu, Polina Lishko and co-workers provide evidence that temperature-dependent histidine deprotonation within the CatSper1 N-terminus promotes coupling between neighboring complexes and activation.
Image credit: pbio.3003776
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