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Chemistry LibreTexts

CT0-P. The Cell: Proteins

CT0-P. The Cell: Proteins (contributed by Henry Jakubowski)

Figure:  A Eukaryotic Cell

Mitochondrion Link Ribosome CellImageMap

http://torresbioclan.pbworks.com/w/page/22377234/Spikefish%20About%20Cells

Used with permission from Liliana Torres .  Also at http://www.animalport.com/animal-cells.html

Proteins are polymers of bifunctional alpha-amino acids each containing a different R group at the alpha carbon.  Encoded by the DNA genome, proteins are involved in all cellular activities including recognition, catalysis, movement, and signalling. 

The following site will show you the "life" history of proteins in cells.