> as lemmas

1967 Proc. National Acad. Sci. U.S.A. 58 2089 Significant concentrations of species i with unliganded [protein] subunits in the B conformation are found.

1989 B. Alberts et al. Molecular Biol. Cell (ed. 2) xii. 691 Some types of steroid hormone receptor are located primarily in the cytosol when they are inactive (unliganded).

2013 H. Sies in D. Praticò & P. Mecocci Stud. Alzheimer's Dis. i. 4 Mechanisms keeping in check the amounts of unliganded iron have again come into focus.