2-Structure_and_Function_Jan10

Inner membrane 75 proteins 25 lipids transport

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Unformatted text preview: 1.htm The endoplasmic re,culum •  The endoplasmic re,culum (ER) is a system of membranous channels. The membrane is composed of a bilayer of phospholipid. •  Rough ER: studded with ribosomes, important for protein synthesis. •  Smooth ER: no ribosomes, involved in synthesis of lipid. 22 Rough ER •  The ER is also involved in protein modifica,on, for example glycosyla,on, and matura,on. 23 The Golgi body •  •  The Golgi body is a set of membrane compartments involved in further processing of proteins and their distribu,on. Proteins are packaged in vesicles and transported to where they are required. For example, lysosomes are intern...
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