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Example sentences for: src-
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Overexpression of these NCoA factors enhances ligand-induced transactivation of several nuclear receptors [ 99 ] . A weak intrinsic HAT activity has been reported in SRC-1/NCoA-1 and pCIP/ACTR/AIB1, suggesting that chromatin remodeling may also be a function of these NCoA factors [ 99 100 ] ; although they do not appear to contain regions homologous to the HAT domains of CBP/p300 or p/CAF.
SRC-1 Steroid receptor coactivator 1
It has been reported that coactivators in combination can enhance transcriptional activity of SHRs compared to when they are delivered to cells individually [ 29 30 ] . Recently, Giraud et al [ 12 ] reported a direct interaction of Stat3 with SRC-1 and CBP/p300.
Moreover, Stat3 has also been directly associated with several coactivators, such as SRC-1 and CBP/p300 [ 9 12 ] . Recruitment of coactivators to nuclear receptors takes place via a common motif in the coactivators containing a core consensus sequence LXXLL (L, leucine; X, any aminoacid) [ 38 ] . Most of the coactivators contain more than one of these motifs, raising the question regarding specificity of these motifs to specific activating domains in the nuclear receptors.
The nuclear receptor (NR) family comprises 48 structurally related transcription factors, many of which require their cognate ligand for activity [ 1 2 3 ] . The NRs regulate transcription by binding to response elements in the promoters of target genes and acting as scaffolds for the assembly of large coactivator and corepressor complexes [ 4 ] . NR coactivators include the p160s (including GRIP1/TIF-2, SRC-1 and AIB1/ACTR/pCIP).
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