Animals 2 Humans 2 Hv1 proton channel 2 Ion Channel Gating 2 Ion Channels 2 Male 2 Mice 2 Molecular Dynamics Simulation 2 Protons 2 Sperm Motility 2 Water 2 animal 2 channel gating 2 chemistry 2 gating mechanism 2 human 2 ion channel 2 male metabolism 2 molecular dynamics 2 molecular dynamics simulations 2 mouse 2 proton 2 spermatozoon motility 2 water 2 water-wire 2