My chemistry professor handed me this image and gave me no other instructions other than to "crack the code" The only hint she gave us was that "she considers herself a protein chemist". Solve the...

My chemistry professor handed me this image and gave me no other instructions other than to "crack the code" The only hint she gave us was that "she considers herself a protein chemist". Solve the code. 

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ashley227 | College Teacher | (Level 2) Adjunct Educator

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The code can be found in finding the sequence of amino acids. The amino acids can be identified based on the side groups bound to the alpha carbon. The alpha carbon is the one between the amine group with the nitrogen and the carboxylic acid group. From the left, the first amino acid in the sequence is cysteine (C). The side group of a cysteine is -CH2-SH. The next amino acid is histadine (H). The histadine also has a -CH2, but it is bound to a 5 constituent ring with 3 carbons and 2 nitrogens. The third amino acid in the sequence is glutamic acid (E). Glutamic acid has a -CH2-CH2-COOH side group. Finally, the fourth amino acid in the sequence is methionine (M). Methionine has a -CH2-CH2-S-CH3 side group. The single letter codes for these amino acids spells out C-H-E-M.  

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