Hauri HP, Sterchi EE, Bienz D, Fransen JA, Marxer A. Expression and intracellular transport of microvillus
membrane hydrolases inhuman intestinal epithelial cells.
Publishing online in Science, the researchers report that the molecule to which progesterone must bind is the enzyme alpha / beta
hydrolase domain containing protein 2 (ABHD2), found in the sperm cell's outer
membrane.