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ASH1L
ASH1L (also called huASH1, ASH1, ASH1L1, ASH1-like, or KMT2H) is a histone-lysine N-methyltransferase enzyme encoded by the ASH1L gene located at chromosomal band 1q22. ASH1L is the human homolog of Drosophila Ash1 (absent, small, or homeotic-like). == Gene == Ash1 was discovered as a gene causing an imaginal disc mutant phenotype in Drosophila. Ash1 is a member of the trithorax-group (trxG) of proteins, a group of transcriptional activators that are involved in regulating Hox gene expression and body segment identity. Drosophila Ash1 interacts with trithorax to regulate ultrabithorax expression. The human ASH1L gene spans 227.5 kb on chromosome 1, band q22. This region is rearranged in a variety of human cancers such as leukemia, non-Hodgkin’s lymphoma, and some solid tumors. The gene is expressed in multiple tissues, with highest levels in brain, kidney, and heart, as a 10.5-kb mRNA transcript.
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