Structure

Sequence:

PAPRLPQDPCGPDCAPPAPGLPRGPCGPDCAPAAPGLPRDPCGPDCAPAAPGLPPDPCGPDCAPPAPGLPRGPCGPDCAPAAPGLPPDPCGPDCAPPAPGLPQDPCGPDCAPPAPGLPRGPCGPDCAPPAPGLPQDPCGPDCAPPAPGLPPDPCGSNCAP