Anti-MUC5AC / Mucin-5AC, clone 45M1

1 mg/ml in sterile PBS, BSA free, sodium azide free. This antibody recognizes the peptide core of gastric mucin M1 (>1,000kDa), now identified as Mucin-5AC or MUC5AC. The MUC5AC epitope is destroyed by beta-mercaptoethanol and proteases but not by periodate treatment. Antibody to MUC5AC reacts with the gastric epithelium of normal human gastrointestinal tract as well as with the precancerous and cancerous colon but not with normal adult colon. It also reacts with fetal colonic mucosa. Resurgence of gastric mucin reactivity during colonic carcinogenesis is due to re-expression of the peptide core of gastric (or fetal colonic) mucins. Protein function: Gel-forming glycoprotein of gastric and respiratoy tract epithelia that protects the mucosa from infection and chemical damage by binding to inhaled microrganisms and particles that are subsequently removed by the mucocilary system. [The UniProt Consortium]