ovarian cysts/proline

1. The action of dilute H2O2 on a series of ovarian-cyst glycoproteins and glycopolypeptides was investigated. 2. Both native glycoproteins and the glycopolypeptides were carbohydrate-rich, of relatively low molecular weight and of simple structure. 3. At pH 5.6 and 37 degrees C, exposure to H2O2

1. Equilibrium density-gradient ultracentrifugation in caesium salts was used in two stages in the isolation and subfractionation of the glycoprotein component from a human ovarian-cyst fluid. The eight main subfractions thus obtained were the subject of detailed physicochemical characterization. 2.

Purified blood group-specific glycoproteins from ovarian cyst fluids were digested with pronase. The glycoproteins, which had dissimilar amino acid compositions, lost varying amounts of amino acids to leave pronase-resistant cores with very similar compositions. The resistant materials, which were