Extracellular calcium functions as a molecular glue for transmembrane helices to activate the scramblase Xkr4.
Zhang P, Maruoka M, Suzuki R, Katani H, Dou Y, Packwood DM, Kosako H, Tanaka M, Suzuki J. Nat Commun. 2023 Sep 11; 14(1):5592. Epub 2023 Sep 11.