Which of the following is structural extracellular matrix proteins?

The correct identification of structural extracellular matrix proteins is essential in understanding tissue engineering, as these proteins play crucial roles in maintaining the integrity and function of tissues. Laminin and fibronectin are both key structural proteins found within the extracellular matrix.

Laminin is a glycoprotein that is an integral part of the basal lamina, a layer of the extracellular matrix that provides support and anchorage for cells. It facilitates cell adhesion, differentiation, and migration, which are vital for tissue development and repair.

Fibronectin also serves as a structural component of the extracellular matrix. It is involved in various processes such as wound healing, blood coagulation, and cell adhesion. Fibronectin connects cells to the extracellular matrix and helps transmit signals that regulate cell behavior.

Therefore, choosing "None of the above" disregards the fact that both laminin and fibronectin are indeed structural extracellular matrix proteins. The inclusion of these two proteins reinforces their importance in tissue engineering applications, where they are often utilized as scaffolding materials or incorporated into biomaterials to enhance cellular interactions and promote tissue regeneration.