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Meaning of histidine

his•ti•dine

Pronunciation: (his'ti-dēn", -din), [key]
— n. Biochem.
  1. an essential amino acid, CHNCHCH(NH)COOH, that is a constituent of proteins and is important as the iron-binding site in hemoglobin.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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