Structural proteins are proteins that build up our tissues or body. actin, myosin, clotting factors are some of the structural proteins. They give up a shape and rigidity to our cells or tissues and ultimately to our body (muscle).
Most of the structural components of an organism is made from proteins. Connective tissues like collagen and adhesion structures are made of proteins, usually more than one per unit, to connect and hold an organism together and provide structure.