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Either of two isomers that are diphosphates of glyceric acid. 1,3-diphosphoglyceric acid is an important intermediate in glycolysis and other metabolic pathways. 2,3-diphosphoglyceric acid affects the binding of oxygen to hemoglobin in red blood cells.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.