Question

1. The picture below shows a four-stranded b-sheet, with the strands labeled "A" through D. (Note that the R-groups have been removed.) Carbons are black; nitrogens are blue; and oxygens are red. A. In the box next to Strand "B, draw an arrow showing the N-to-C direction of the polypeptide chain B. What pair(s) of neighboring strands are anti-parallel? C. What pair(s) of neighboring strands are parallel? D. How many residues are in Strand "B"? A B C D

The picture below shows a four-stranded b-sheet, with the strands labeled “A” through “D”. (Note that the R-groups
have been removed.) Carbons are black; nitrogens are blue; and oxygens are red.
A. In the box next to Strand “B”, draw an arrow showing the N-to-C direction of the polypeptide chain.
B. What pair(s) of neighboring strands are anti-parallel?
C. What pair(s) of neighboring strands are parallel?
D. How many residues are in Strand “B”?

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