Assertion: steroid's receptor | /r/HasProperty | bound by corepressor proteins
Facets:
value: constitutively
type: MANNER
Source sentences:
text: endogenous TR.80 With the exception of the ERBA1 oncogene product and some of the orphan receptors that function constitutively or are activated by growth factor-mediated phosphorylation, unliganded class II nuclear receptors are not transcriptionally active until liganded, because the class II nuclear receptors, including RAR, RXR, and TR, are constitutively bound by corepressor proteins that silence transcription until the appropriate ligand is bound.32,81,82