RT Journal
A1 Boros, Joanna
A1 Donaldson, Ian J.
A1 O'Donnell, Amanda
A1 Odrowaz, Zaneta A.
A1 Zeef, Leo
A1 Lupien, Mathieu
A1 Meyer, Clifford A.
A1 Liu, X. Shirley
A1 Brown, Myles
A1 Sharrocks, Andrew D.
T1 Elucidation of the ELK1 target gene network reveals a role in the coordinate regulation of core components of the gene regulation machinery
JF Genome Research 
JO Genome Research 
YR 2009 
FD November 01 
VO 19 
IS 11 
SP 1963 
OP 1973 
DO 10.1101/gr.093047.109 
UL http://genome.cshlp.org/content/19/11/1963.abstract 
AB Transcription factors play an important role in orchestrating the activation of specific networks of genes through targeting their proximal promoter and distal enhancer regions. However, it is unclear how the specificity of downstream responses is maintained by individual members of transcription-factor families and, in most cases, what their target repertoire is. We have used ChIP-chip analysis to identify the target genes of the ETS-domain transcription factor ELK1. Two distinct modes of ELK1 target gene selection are identified; the first involves redundant promoter binding with other ETS-domain family members; the second occurs through combinatorial binding with a second transcription factor SRF, which specifies a unique group of target genes. One of the most prominent groups of genes forming the ELK1 target network includes classes involved in core gene expression control, namely, components of the basal transcriptional machinery, the spliceosome and the ribosome. Amongst the set of genes encoding the basal transcription machinery components, are a functionally linked subset of GTFs and TAFs. Our study, therefore, reveals an unsuspected level of coordinate regulation of components of the core gene expression control machinery and also identifies two different modes of promoter targeting through binding with a second transcription factor or redundant binding with other ETS-domain family members.