title: Differential binding and transcriptional behaviour of two highly related orphan receptors, ROR alpha(4) and ROR beta(1).
abstract: Nuclear receptors are ligand-inducible transcription factors that can be classified into two major groups according to their DNA-binding properties. Members of the first group bind to DNA as dimers, either homo- or heterodimers; members of the second group are also able to bind as monomers. While the first group has been extensively studied biochemically, very little is known about nuclear receptors that bind and act as monomers. In this study, we compared the binding and transcriptional behaviour of ROR alpha (NR1F1) and ROR beta (NR1F2), two representatives of the subgroup of monomer-binding receptors. We show that although they are highly related in their amino acid structures, they display remarkably different binding behaviours. Furthermore, we provide evidence that ROR beta can efficiently activate transcription in vitro as a monomer.
authors: Department of Molecular Biology, University of Nijmegen, Toernooiveld 1, 6525 ED Nijmegen, The Netherlands.
authors: K
authors: K
authors: Gawlas
authors: H G
authors: HG
authors: Stunnenberg
mesh_terms: D001665:Binding Sites; D004926:Escherichia coli / Q000235:genetics; D015870:Gene Expression; D057094:Nuclear Receptor Subfamily 1, Group F, Member 1; D057095:Nuclear Receptor Subfamily 1, Group F, Member 2; D020794:Receptor Protein-Tyrosine Kinases; D057050:Receptor Tyrosine Kinase-like Orphan Receptors; D011956:Receptors, Cell Surface / Q000235:genetics* / Q000378:metabolism; D018160:Receptors, Cytoplasmic and Nuclear; D015534:Trans-Activators; D014158:Transcription, Genetic; D014616:Vaccinia virus / Q000235:genetics
chemical_list: D057094:Nuclear Receptor Subfamily 1, Group F, Member 1; D057095:Nuclear Receptor Subfamily 1, Group F, Member 2; C539738:RORA protein, human; C539740:RORB protein, human; D011956:Receptors, Cell Surface; D018160:Receptors, Cytoplasmic and Nuclear; D015534:Trans-Activators; C078716:ROR1 protein, human; D020794:Receptor Protein-Tyrosine Kinases; D057050:Receptor Tyrosine Kinase-like Orphan Receptors