BIO206H5 Lecture Notes - Lecture 19: Endomembrane System, Peroxisome, Chloroplast
Document Summary
Proteins that are largely synthesized in the cytosol need to be sorted and targeted to their nal destination so that a mitochondria and peroxisomes can acquire the protein compliments that make them functional organelles. Many cells secrete material to the external environment, so there needs ot be a secretory routine for proteins. Allwos for antagonistic reactions to occur simultaneously with its opposing reaction. For examle,, in protein synthesis, synthesis and degradation are kept separate by compartmentalizing degrading structures. So this notion that the proteins need to be segregated in order for them to carry out heir speci c functions is an important idea. Thisis one of the evolutionary advantages that comes from begin a eu cell- you can segregarate and compartmentalize reactions from each other. If you look at electromicrographs of eu cells, there"s few membrane structures. But example on slide has many different membranes, serves to compartmentalizes.
