MED14-independent group 3 enhancer GRCh37_chr14:100534710-100535909
RGD ID:
38668077
Description:
This genomic sequence was predicted to be a transcriptional regulatory region based on chromatin state analysis from the ENCODE (ENCyclopedia Of DNA Elements) project. It was validated as an active enhancer by the STARR-seq (self-transcribing active regulatory region sequencing) massively parallel reporter assay (MPRA) in HCT116 colorectal carcinoma cells, where it was defined as a group 3 enhancer that depends on the BRD2, BRD4, P300/CBP and CDK7 cofactors, but it has limited or no dependence on the MED14 core Mediator complex subunit. A subregion was also validated as a functional enhancer by Sharpr-MPRA (Systematic high-resolution activation and repression profiling with reporter tiling using massively parallel reporter assays) in K562 erythroleukemia cells (group: K562 Activating DNase matched - State 5:Enh, candidate strong enhancer, open chromatin). The same subregion also displayed weak activation by Sharpr-MPRA in HepG2 liver carcinoma cells (group: HepG2 Activating non-DNase unmatched - State 10:DNaseD, primarily Duke DNase, candidate regulatory elements in more likely repressive locations). This locus also includes two accessible chromatin subregions that were validated as enhancers based on their ability to activate an origin of replication minimal core promoter by the ATAC-STARR-seq (assay for transposase-accessible chromatin with self-transcribing active regulatory region sequencing) MPRA in GM12878 lymphoblastoid cells. [provided by RefSeq, May 2023]