Inhibition of iodotyrosine deiodinase (IYD) enzyme activity produced by
chemicals in single-concentration screening (ToxCast Phase 1_v2, Phase 2, and
e1k chemical libraries plus the 10 chemicals in the replicated test set) at
target concentration of 200 μM, displayed as % of control with median
(black circle) and range (line) of three biological replicates. [A] All
chemicals, [B] Expanded plot of chemicals that produced ≥20% inhibition.
Chemicals are plotted by rank order based on median % inhibition in
single-concentration screening, with those producing the greatest inhibition to
the right. Chemicals further tested in concentration-response screening are
indicated with white asterisk (*). The top 25 ranked chemicals based on absolute
IC50 are shown in Table 3,
with tested concentrations and median % inhibition values for each chemical in
Supplementary Table
2.