A protein has a molecular mass of 270kDa. When subjected to gel electrophoresis in the presence of sodium dodecyl sulfate (SDS). the protein gives thee bunds with molecular musses of 150, 100, and 20kDa. When electrophoresis is carried out in the presence of SDS and -mercaptoethanol, three bands are again forned, this time with molecular masses of 75,50 and 20kDa. Identify the correct subunit composition of the protein. 3 whunits exd of malecular weigt 75,50 and 20kDa Which of the following statements is FALSE regarding hydroxyl functional group present in amino acids: It is involved in hydrogen bonding It can sometimes be ionizable (in tyrosine amino acid) It is site of post-translation modification, specifically phosphorylation It may contribute in the hydrophobic interactions