BIOL 155 Lecture Notes - Lecture 2: Glycoprotein, Osmosis, Hydrolysis
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Ubc biol 155 lecture 2 notes subcellular organization and function. It binds with the phospholipid head and stabilizes the outer portion of the membrane: proteins. Proteins are incorporated into the membrane in the following ways: extrinsic or peripheral proteins are attached to either the external or internal surface of the membrane, intrinsic or integral proteins project through both surfaces (span the bilayer). All these proteins act as one or more of the following: transport proteins. Attachment sites for cytoskeleton receptors (e. g. for hormones or neurotransmitters) *the structure of the plasma membrane is not static, as the lipid molecules are held together by weak bonds or simple hydrophobic interactions and, therefore, they can and do move around. They move laterally almost continually and can even flip flop from internal to external surfaces although this does not occur very often. It is this fluidity that gives the fluid mosaic model part of its name.
