On Protein Folding

One paragraph in this story1 contains confusing terminology. The use of the term nitrogen-hydrogen bond for amide-hydrogen is a simplification too far. "Hydrogen bonds" in proteins exist between the backbone amide nitrogen and carbonyl groups. Carbon monoxide groups are not present in proteins; I suspect the author meant carbonyl.

N. Said
Department of Cellular Biology and Anatomy
Medical College of Georgia, Augusta

1. P. Hunter, "Protein folding," The Scientist, 17[17]:24-7, Sept. 8, 2003.

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