Carbohydrates

ID #2098

Why is this a false statement: "Fructose-1,6-diphosphate is a fructose molecule with a phosphate group attached to the number 1 carbon, and a second phosphate group attached to the number 6 carbon." ?


One of the things I pointed out in lecture is the subtle but important difference between a diphosphate molecule and a bisphosphate molecule. If the molecule in the question truly has phosphates attached to different atoms in the fructose backbone, then it would most accurately be referred to as a bisphosphate species. If the two phosphates were attached to each other, it would be a diphosphate species, but then it wouldn't be 1,6 anymore.

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