RRC ID 47256
Author Minoguchi S, Taniguchi Y, Kato H, Okazaki T, Strobl LJ, Zimber-Strobl U, Bornkamm GW, Honjo T.
Title RBP-L, a transcription factor related to RBP-Jkappa.
Journal Mol Cell Biol
Abstract RBP-Jkappa is a sequence-specific DNA binding protein which plays a central role in signalling downstream of the Notch receptor by physically interacting with its intracellular region. Although at least four Notch genes exist in mammals, it is unknown whether each Notch requires a specific downstream signalling molecule. Here we report isolation and characterization of a mouse RBP-Jkappa-related gene named RBP-L that is expressed almost exclusively in lung, in contrast to the ubiquitous expression of RBP-Jkappa. For simplicity, we propose to call RBP-Jkappa RBP-J. The RBP-L protein bound to a DNA sequence almost identical to that of RBP-J. Surprisingly, RBP-L did not interact with any of the known four mouse Notch proteins. Although we found that RBP-L and EBNA-2 cooperated in transcriptional activation, they did not show significantly strong protein-protein interaction that can be detected by several in vivo and in vitro assays. This is again in contrast to physical association of RBP-J with EBNA-2. Several models to explain functional interaction between RBP-L and EBNA-2 are discussed.
Volume 17(5)
Pages 2679-87
Published 1997-5-1
DOI 10.1128/MCB.17.5.2679
PMID 9111338
PMC PMC232118
MeSH Amino Acid Sequence Animals Base Sequence COS Cells Cloning, Molecular DNA / metabolism DNA-Binding Proteins / chemistry DNA-Binding Proteins / genetics* Epstein-Barr Virus Nuclear Antigens / metabolism Fungal Proteins / metabolism Gene Expression Regulation Immunoglobulin J Recombination Signal Sequence-Binding Protein Membrane Proteins / genetics Membrane Proteins / metabolism Mice Molecular Sequence Data Nuclear Proteins* Receptors, Notch Saccharomyces cerevisiae Proteins* Transcription Factors* Transcription, Genetic
IF 3.611
Times Cited 101
DNA material RBP-L (RDB01802) pGa981-6 (RDB06776).