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Rabbit Anti-DR1 protein antibody
DR1, also known as NC2∫ (negative cofactor 2 subunit ∫), is a TFIID (TATA box-binding protein)-associated protein. DR1 localizes to the nucleus and contains an N-terminal histone fold motif, a TFIID-binding domain and an alanine and glutamine rich region. Via its histone fold motif, DR1 forms a heterodimer with NC2å (DRAP1) to comprise the conserved eukaryotic complex, NC2 (negative cofactor 2). The NC2 complex can both positively and negatively regulate transcription by RNA Pol II. More specifically, NC2 acts as a repressor of TATA-dependent transcription and acts as an activator for DPE-dependent transcription. NC2 represses RNA Pol II transcription by binding to TFIID and inhibiting association of the transcription factors TFIIA and TFIIB. NC2 activity is regulated by phosphorylation. Both subunits, NC2å and DR1, are phosphorylated in vivo.
Function:
The association of the DR1/DRAP1 heterodimer with TBP results in a functional repression of both activated and basal transcription of class II genes. This interaction precludes the formation of a transcription-competent complex by inhibiting the association of TFIIA and/or TFIIB with TBP. Can bind to DNA on its own. Component of the ATAC complex, a complex with histone acetyltransferase activity on histones H3 and H4.
Subunit:
Heterodimer with DRAP1. DR1 exists in solution as a homotetramer that dissociates during interaction with TBP and then, after complexing with TBP, reassociates at a slow rate, to reconstitute the tetramer. Interacts with NFIL3. Component of the ADA2A-containing complex (ATAC), composed of CSRP2BP, KAT2A, TADA2L, TADA3L, ZZ3, MBIP, WDR5, YEATS2, CCDC101 and DR1.
Subcellular Location:
Nucleus.
Post-translational modifications:
Phosphorylation regulates its interaction with TBP. Not phosphorylated when bound to DRAP1.
Similarity:
Belongs to the NC2 beta/DR1 family.
Contains 1 histone-fold domain.
SWISS:
Q01658
Gene ID:
1810
Database links:
Entrez Gene: 1810 Human
Entrez Gene: 13486 Mouse
Entrez Gene: 289881 Rat
Omim: 601482 Human
SwissProt: Q01658 Human
SwissProt: Q91WV0 Mouse
SwissProt: Q5XI68 Rat
Unigene: 348418 Human
Unigene: 303534 Mouse
Unigene: 6666 Rat
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