UM01-S4 was purified from cultured mycelium of C. sinensis fungus UM01.
The backbone of UM01-S4 mainly contained mannan units.
UM01-S4 adapted sphere-like conformation in NaCl solution.
UM01-S4 exhibited strong immuno-modulatory activity.
MAPK and NF-κB signal transduction were the potential mechanism of UM01-S4.