Solution for JSmol Exercise 5:
	Hold down the right mouse button with pointer over the image for the following JMol popup menu selections:
1.	Style/Structures/Backbone  Show me
	This step exposes the polypeptide backbone and hides the "clutter" from the sidechain atoms.
2.	Set Picking/Label  Show me
	After clicking on the left end of the polypeptide, "[Tyr1].CA" appears over the alpha carbon of a tyrosine at position 1, which there corresponds to the N-terminal residue.
3.	Style/Labels/Position Label on Atom/Lower Left  Show me
	The default label position is centered on the atom "picked" and the default label color is the atom color, both of which make the labels difficult to read.  Thus, it is useful to reposition the label for easier reading.  (The label font size and color can also be altered with specific commands that will be introduced later.)
4.	Label the C-terminal end by "picking."  Show me
	After clicking on the right end of the polypeptide, "[Lys38].CA" appears over the alpha carbon of a lysine at position 38, which corresponds to the C-terminal residue since it is the last shown.  By deduction, the polypeptide is 38 residues in length.
5.	Popup label an atom by hovering over it.  Show me
	Note that a similar label on yellow background - "[Lys38].CA #299" - appears when you hover the mouse pointer over any atom, as illustrated in the static image; #299 corresponds to the 299th atom listed in the PDB file for this structure.
Note there are other easier ways to find this information using a "Command box" which will be introduced later.