Amino Acid Exam Questions

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2002

This sketch shows the bonding topologies of amino acids in a polypeptide. Only bonds between non-hydrogen atoms are shown but single and double bonds are distinguished. This identification task is similar to inferring the sequence from a wireframe structural image.


Write the sequence of this polypeptide into your exam booklet in one-letter code. Where the sidechains are ambiguous, write all possible one letter codes for the residue in square brackets. Annotate residues that are > 80 % charged at physiological pH with a "+" or "-".
Example: AB+CD[EFG]HIJ[KL]M-N-OPQ
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