These proteins are called trans-membrane or integral proteins These proteins  are called trans-membrane or integral proteins. 

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Presentation transcript:

These proteins are called trans-membrane or integral proteins These proteins  are called trans-membrane or integral proteins.  Many proteins have a quaternary structure and are made of several polypeptide chains

Some of the proteins rest on one side or the other of the membrane Some of the proteins rest on one side or the other of the membrane.  These are called peripheral proteins or monotopic proteins

Other parts of the membrane include molecules of cholesterol with adds to the structural integrity of the membrane.  Glycolipids form when a carbohydrate attaches to a lipid (fat) molecule. 

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