A failed transcription-factor gene is as common a cause of cancer as a failed kinase gene.
Difference in the distribution of transcription factors between tomato nrFLcDNA and Arabidopsis implies that the nrFLcDNA set failed to contain transcription factors whose expression level is low or cell type-specific.
Additionally, we demonstrated here that, LPA which activates MAL-SRF dependent transcription failed to regulate CYLD in MEFs, suggesting that CYLD induction through p38MAPK and SRF utilizes a distinct mechanism.
One shortcoming of this work was that we were unable to construct an adequate AI-MAPK; overexpression of Fus3p, Kss1p, and Fus3pI161L all failed to activate transcription above the basal level.
Of note, none of these regulators were restricted to glial cells, and their overexpression, in most areas, failed to stimulate transcription of JCV in non-glial cells, suggesting that the JCV promoter in general is under a negative regulation in non-permissive cells.
Consistent with this, we note that one of the zinc finger arrays (ZFP2) used to make the kdr ZFNs failed to activate transcription in the B2H system (Table 1) and therefore would not have been identified as a positive clone if the kdr site had been targeted using the OPEN method.
Moreover, substitution of Vit by an AP-1 site failed to activate transcription in each case.
Secondly, knockdown of clathrin or the variant surface glycoprotein failed to perturb transcription.
However, repositioning and repression of prnB/prnD failed, when the transcription factor CreA was mutated or unable to bind.
In contrast, all subdivisions of PF11_0442_5 failed to activate transcription, so the section was kept whole for further testing.
Such transcriptional regulation was dependent on the DNA binding function of LHX1 because the LHX1N230S mutant failed to activate transcription from Vip:luc reporter.
