... feature of various cancers including cancer of the co-lon [33]. The amino acid analysis of the purified mucin gave high amounts of ‘mucin-like amino acids, serine, threonine and proline. Serine ... profiles (Fig. 3a and b) [26, 27] and whilst reduction was not quite complete, digestion resulted in most of the mucin eluting in the included volume of the column, suggesting the findings of ... are shown in Table 2 with the signa-ture amino acids for mucins, namely, serine, threonine and proline comprising 48.3% of the total amino acids in the sample. The threonine levels in this particular...