Anti-DR1 Antibody Picoband® Fluoro488 Conjugated

Protein Dr1 is a protein that in humans is encoded by the DR1 gene. This gene encodes a TBP- (TATA box-binding protein) associated phosphoprotein that represses both basal and activated levels of transcription. The encoded protein is phosphorylated in vivo and this phosphorylation affects its interaction with TBP. This protein contains a histone fold motif at the amino terminus, a TBP-binding domain, and a glutamine- and alanine-rich region. The binding of DR1 repressor complexes to TBP-promoter complexes may establish a mechanism in which an altered DNA conformation, together with the formation of higher order complexes, inhibits the assembly of the preinitiation complex and controls the rate of RNA polymerase II transcription.

Developmental Families, Domain Families, Epigenetics and Nuclear Signaling, Neuroscience, Sensory System, Transcription, Transcription Factors, Visual System

Transcription factor that binds and transactivates the sequence 5'-TAATC[CA]-3' which is found upstream of several photoreceptor-specific genes, including the opsin genes. Acts synergistically with other transcription factors, such as NRL, RORB and RAX, to regulate photoreceptor cell-specific gene transcription. Essential for the maintenance of mammalian photoreceptors. .

1. Goppelt, A., Stelzer, G., Lottspeich, F., Meisterernst, M. A mechanism for repression of class II gene transcription through specific binding of NC2 to TBP-promoter complexes via heterodimeric histone fold domains. EMBO J. 15: 3105-3116, 1996. 2. Inostroza, J. A., Mermeistein, F. H., Ha, I., Lane, W. S., Reinberg, D. Dr1, a TATA-binding protein-associated phosphoprotein and inhibitor of class II gene transcription. Cell 70: 477-489, 1992. 3. Kamada, K., Shu, F., Chen, H., Malik, S., Stelzer, G., Roeder, R. G., Meisterernst, M., Burley, S. K. Crystal structure of negative cofactor 2 recognizing the TBP-DNA transcription complex. Cell 106: 71-81, 2001.