Rewrite: The assay (PUBCHEM_BIOASSAY) uses fluorescence polarization to identify small molecule antagonists of Siah-1 and a peptide ligand. It confirms the class of assay, has a single protein target, and is categorized as binding with Homo sapiens as the assay organism. Related assays include AID1826, AID2127, and AID2141. Does the molecule work for this assay?