unliganded

English

Etymology

From un- +‎ ligand +‎ -ed.

Adjective

unliganded (not comparable)

1. (biochemistry) Having no ligand; especially (of a protein) deprived of any small molecule that it is sometimes associated with
   • 1966, Archives of Biochemistry and Biophysics:

     The direct hydrogen ion titration of unliganded hemoglobin was performed under a stream of purified argon; that of the carbon monoxide derivative was carried out in a closed system under an atmosphere of pure CO.