This region, which overlaps the microRNA 4645 (MIR4645) gene on chromosome 6, can function as an enhancer in human Jurkat T cells. The spatially equivalent or corresponding region in mouse, which is not conserved at the sequence level, can also function as an enhancer in mouse EL4 T cells. The chromatin structure of this region represents a histone acetylation island in human T cells based on the diacetylation of histone H3 at lysines 9 and 14. [provided by RefSeq, Nov 2015]