The protein encoded by this gene contains four kringledomains and a serine protease domain, similar to that found inhepatic growth factor. Despite the presence of the serine proteasedomain, the encoded protein may not have any proteolytic activity.The receptor for this protein is RON tyrosine kinase, which uponactivation stimulates ciliary motility of ciliated epithelial lungcells. This protein is secreted and cleaved to form an alpha chainand a beta chain bridged by disulfide bonds.

Titration of the MST1 antibody may be required due to differences in protocols and secondary/substrate sensitivity.

A portion of amino acids 454-483 from the human protein was used as the immunogen for this MST1 antibody.

Aliquot the MST1 antibody and store frozen at -20oC or colder.Avoid repeated freeze-thaw cycles.