Mucin 5AC (MUC5AC) is encoded by the gene mapped to human chromosome 11p15.5 and is predominantly expressed in the gastric and tracheobronchial mucosae. The MUC5AC protein contains two types of deduced peptide domains such as eight amino acid tandemly repeated (TR) domains and cysteine-rich domains.

MUC5AC (XP_495860, 351 a.a. ~ 450 a.a) partial recombinant protein with GST tag. MW of the GST tag alone is 26 KDa.

Sequence
NQSTCAVYHRSLIIQQQGCSSSEPVRLAYCRGNCGDSSSMYSLEGNTVEHRCQCCQELRTSLRNVTLHCTDGSSRAFSYTEVEECGCMGRRCPAPGDTQH

Increased expression of Mucin 5AC (MUC5AC) leads to epithelial cancer progression, including colon cancer. Therefore, MUC5AC is considered to be a potential target in the treatment of colon cancer. MUC5AC containing the carbohydrate blood-group antigen, Lewis B (LeB) functions as a key receptor for Helicobacter pylori. O-glycoprotein encoded by the gene plays a vital role in mucus formation and epithelium protection. Decreased level of MUC5AC expression in ocular surface might lead to the tear instability in patients with SjÖgren syndrome.

Solution in phosphate buffered saline, pH 7.4

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