Humboldt State University ® Department of Chemistry

Richard A. Paselk

Chem 451

Biochemical Toxicology

Spring 2010

Lecture Notes:: 26 January

© R. Paselk 2008
 
     
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Membrane Structure

See Figs. 3.1 and 3.2, pg 36 in Timbrell)

structural diagrams of important membrane lipids

public domain image via Wikipedia Creative Commons

Let' now look at the proteins in membranes (mosaic part).

 

  • artists images of cell membrane structure incuding details

    public domain image via Wikipedia Creative Commons

    Proteins

    Proteins serve as the machinery and much of the structure in living organisms - they do most of the jobs. [overhead - one million times magnification, protein Plate 7] Functionally we can categorize proteins into three broadly defined groups based on their functions:
  • Structural proteins.
  • Recognition proteins.
  • Enzymes.
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    © RA Paselk 2001