Issue Date: February 2, 2009
NO DOUBT OTHERS have pointed out that your structure of hemicellulose in “Genes to Gasoline” is wrong (C&EN, Dec. 8, 2008, page 14). An oxygen is missing between the arabinose and the xylose it is attached to. When adding the oxygen it would look far better if the bond from the xylose pointed in a realistic direction. It should be parallel to the 4–5 bond of the xylose.
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