Soluble adenylyl cyclase in nonmammalian sperm is directly controlled by pH, not by HCO 3 − or Ca 2+ - Olivia Kendall; Oanh Tu Hoang; Joshua L. Wort; Hussein Hamzeh; Heinz G. Körschen; René Pascal; Kai Korsching; Meritxell Wu-Lu; Wolfgang Bönigk; Christian Kambach; Luis Alvarez; Reinhard Seifert; et al. (Proceedings of the National Academy of Sciences, 2026)