Protein Sequence:
The sequence of a protein is just the order of amino acids starting from the first nitrogen (amino terminus). If you are having trouble identifying the amino terminus, try this:

You may also find it useful to remove the hydrogens:

Note: In all of these structures all of the residues are labeled "GLY". You will have to compare sidechains structures to identify the amino acid.

Color Scheme:
 blue - nitrogen
 red - oxygen
 gray - carbon
 yellow - sulfur
 hydrogen - white

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