BI110 Lecture Notes - Lecture 45: Plasmodesma, Plant Cell, Archaea
Document Summary
Describe the intercellular junctions in animal cells. Describe the structure and function of the extracellular matrix. Describe the role of the plasmodesmata in plant cell communication. Composed of collagen, proteoglycans and associated proteins that link cells and extracellular matric to one another both structurally and functionally. Primary component of the extracellular matrix of most animal cells is a glycoprotein called collagen. Collagen constitutes almost 40% of the total amount of protein in the human body. Another component of the extracellular matrix is a family of glycoproteins called fibronectins: fibronectins associate with collagen, proteoglycans and other extracellular matrix components, they also associate with proteins called. In this way, fibronectins help cells attach and move through the extracellular matric. On the inner side of the plasma membrane, integrins interact with other proteins connected to microfilaments of the cytoskeleton: integrins are able to transmit messages between the microfilaments and the extracellular matrix integrins.
