Purity ~90% (SDS-PAGE). Gel-forming glycoprotein of gastric and respiratoy tract epithelia that protects the mucosa from infection and chical damage by binding to inhaled microrganisms and particles that are subsequently removed by the mucocilary system. Source: Recombinant protein corresponding to aa2452-2721 from mouse Muc5ac, fused to His-Tag at N-terminal, expressed in E. coli. Molecular Weight: ~33.7kD AA