- Heterodimerization of thyroid hormone (TH) receptor with H-2RIIBP (RXR beta) enhances DNA binding and TH-dependent transcriptional activation. Hallenbeck, P.L., Marks, M.S., Lippoldt, R.E., Ozato, K., Nikodem, V.M. Proc. Natl. Acad. Sci. U.S.A. (1992)