histidino

his·ti·din·o (-His),

(his'ti-din-ō), The radical of histidine produced by removal of a hydrogen from a nitrogen atom; prefixed by Nα, Nτ, or Nπ.

his·ti·din·o

(-His) (his'ti-din-ō) The radical of histidine produced by removal of a hydrogen from a nitrogen atom.