This locus represents a conserved genomic element that can function as an enhancer. The major subregion can activate a Hsp68 promoter coupled to a LacZ reporter gene in embryonic heart of transgenic mice. This locus also includes an accessible chromatin subregion that was validated as an enhancer based on its 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) massively parallel reporter assay (MPRA) in GM12878 lymphoblastoid cells. [provided by RefSeq, May 2023]