Structure of secretory protein IV from rat seminal

The complete amino acid sequence of rat SVS-IV protein, consisting of 90 residues, has been determined. The sequence of rat SVS-IV protein is the first seminal vesicle secretory protein determined and it does not show any homology with other known protein sequences. The secondary structure of SVS-IV protein as analyzed by methods of Fasman and Chou indicates that this protein contains 53%α-helix, 36%ß-turn and 11% random coil.