“Kunitz-type Serine Protease Inhibitor in Freshwater Mussel Involved in Antibacterial Defense and Shell Formation”

https://pubmed.ncbi.nlm.nih.gov/38117374

A Kunitz-type serine protease inhibitor (HcKuSPI) in the freshwater mussel Hyriopsis cumingii is involved in antibacterial defense and participates in shell formation by neutralizing excess proteases and regulating crystal morphology.