Major urinary protein 11 (Mup11)

Major urinary proteins (Mups) bind pheromones, and so induce them to allow slow release to the atmosphere from urine marks. May protect pheromones from oxidation.

May also act as pheromones themselves. Within this circumstance, they play a role in the regulation of social behaviors, such as aggression, mating, pup- suckling, territory establishment and dominance (Probable).