BIOLOGY 2B03 Lecture Notes - Lecture 4: Plasmalogen, Peroxisome, Catalase
13 Oct 2018
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Document Summary
Characteristics of peroxisome: bound by a single bilipid membrane, oxidative and synthetic reactions, do not have a genome, reproduction by fission similar in bacterial cell, dense region that contain protein aggregates exclusively catalase. In animal cell responsible for cholesterol synthesis. In nerve cell synthesize plasmalogen for cell membrane: plasmalogen is a membrane component that increases the insulating capacity of the membrane. In liver cell site of oxidation of toxins, such as alcohol. In plant cell required for conversion of fatty acid into carbohydrate, a function that is particularly important in seeds: carbohydrate power seedling germination. Module 4: unfortunate by-product is hydrogen peroxide which is toxic to the cell catalase enzyme converts it to non-toxic oxgen and water molecule presence of catalase means that the peroxide is functioning. Catalase fluorescent microscopy image of catalase - able to look at alive cells. Each dot is a peroxisome filled with catalase.
