BIOL 1000 Lecture Notes - Lecture 16: Signal Transduction, Metabolic Pathway, Cytoskeleton

• School: University of Manitoba
• Department: Biological Sciences
• Course: BIOL 1000
• Professor: Kevin G.Scott

Document Summary

The steroid cholesterol helps stabilize the membrane at warm temperatures & helps it stay fluid at lower temperatures (in animal cell membranes) . Mosaic refers to diverse proteins that are embedded in the fluid framework . Also refers to varied function of the proteins. 6 major functions performed by cellular membrane proteins : help maintain cell shape & coordinate changes inside/outside cell through their attachment to the cytoskeleton & extracellular matrix (ecm, signal transduction other cells . Act as receptors for chemical messengers signaling molecules from. Binding of a signaling molecule triggers a change in the protein, relaying the message into the cell, activating molecules that perform specific functions = transduction: enzyme activity. May be grouped in a membrane to carry out steps of a metabolic pathway o 4. Membrane glycoproteins have attached carbohydrates that function as identification tags that are recognized by membrane proteins of other cells.