What is the molecular weight (mw) of β-Lactoglobulin (β-lg)?

36.8 kDa

β-Lactoglobulin, β-lg, a major protein that accounts for approximately 10-15% of total milk proteins and 58% of whey protein, exists at the normal pH of bovine milk as a dimer with a molecular weight of 36,800 daltons, which is equivalent of 36,800 g/mol.