PMID- 9092522 OWN - NLM STAT- MEDLINE DCOM- 19970515 LR - 20210209 IS - 0021-9258 (Print) IS - 0021-9258 (Linking) VI - 272 IP - 15 DP - 1997 Apr 11 TI - Plasticity of tetramer formation by retinoid X receptors. An alternative paradigm for DNA recognition. PG - 9860-7 AB - Retinoid X receptors (RXRs) are transcription factors that traditionally have been thought to bind DNA as protein dimers. Recently, however, it has been recognized that RXRs can also bind to DNA as protein tetramers. Receptor tetramers form cooperatively on response elements containing suitably reiterated half-sites, and play an important role in determining the specificity of DNA recognition by different nuclear receptors. We report here that RXR tetramers exhibit significant functional plasticity, and form on response elements possessing diverse half-site orientations and spacings. This ability of RXRs to form tetramers and related oligomers appears to contribute to the synergistic transcriptional activation observed when multiple, spatially separated response elements are introduced into a single promoter. Oligomerization may therefore be a common paradigm for DNA recognition and combinatorial regulation by several different classes of transcription factors. FAU - Lin, B C AU - Lin BC AD - Section of Microbiology, Division of Biological Sciences, University of California, Davis, California 95616, USA. FAU - Wong, C W AU - Wong CW FAU - Chen, H W AU - Chen HW FAU - Privalsky, M L AU - Privalsky ML LA - eng GR - GM 08343-07/GM/NIGMS NIH HHS/United States GR - R37 CA-53394/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - J Biol Chem JT - The Journal of biological chemistry JID - 2985121R RN - 0 (DNA-Binding Proteins) RN - 0 (Nuclear Proteins) RN - 0 (Receptors, Retinoic Acid) RN - 0 (Retinoid X Receptors) RN - 0 (Transcription Factors) SB - IM MH - Animals MH - Base Sequence MH - DNA-Binding Proteins/chemistry/*metabolism MH - Genes, Reporter MH - Mice MH - Models, Molecular MH - Molecular Sequence Data MH - Nuclear Proteins/chemistry/*metabolism MH - Protein Conformation MH - Receptors, Retinoic Acid/chemistry/*metabolism MH - Retinoid X Receptors MH - Transcription Factors/chemistry/*metabolism EDAT- 1997/04/11 00:00 MHDA- 1997/04/11 00:01 CRDT- 1997/04/11 00:00 PHST- 1997/04/11 00:00 [pubmed] PHST- 1997/04/11 00:01 [medline] PHST- 1997/04/11 00:00 [entrez] AID - S0021-9258(18)40826-5 [pii] AID - 10.1074/jbc.272.15.9860 [doi] PST - ppublish SO - J Biol Chem. 1997 Apr 11;272(15):9860-7. doi: 10.1074/jbc.272.15.9860.