Morphology of Membranes
Early electron micrographs suggested that all membranes have the same basic structure. In the late 1950s and early 1960s, J. D. Robertson proposed his unit membrane theory of membrane structure. He suggested that all membranes, whether from plants, animals or micro-organisms have a common structural pattern based on a bimolecular lipid layer with protein associated with the two faces; the pattern, in fact proposed by Danielli and Dayson (see chapter 6). Robertson’s theory was based on electron-microscope studies of myelin, though in later work he examined a wide variety of membranes and found that they all appeared to have the same structure as myelin.
KeywordsThylakoid Membrane Nuclear Envelope Outer Segment Synaptic Cleft Presynaptic Membrane
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