User:Robert Dutnall/Sandbox 1 alpha helix
From Proteopedia
Biochemistry Tutorial #2 - Secondary Structure
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An alpha helix
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This is a 19 amino acid chain in alpha helical conformation. All the atoms are shown in this initial orientation (C = green; N = blue; O = red; S = yellow; H = white).
Identify the N- and C-termini?
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