Protease inhibitor required for egg fertilization. Required to prevent premature zona pellucida hardening before fertilization, probably by inhibiting the protease activity of ASTL, a protease that mediates the cleavage of ZP2 and triggers zona pellucida hardening.
Belongs to the fetuin family.
Liver, lung and tongue.
Fetuin-B, Fetuin-like protein IRL685, Fetub
Proteins
Metabolism
42713Da
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