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In molecular biology, HOXB13 antisense RNA 1 (non-protein coding), also known as HOXB13-AS1, is a long non-coding RNA. It was formerly known as PRAC2 (prostate, rectum, and colon 2). It was identified in a human prostatecDNA library, and (in humans) is found in the prostate, rectum, distal colon, and testis. In humans, it is found on chromosome 17q21.
Olsson P, Motegi A, Bera TK, Lee B, Pastan I (2003). "PRAC2: a new gene expressed in human prostate and prostate cancer". Prostate. 56 (2): 123–130. doi:10.1002/pros.10185. PMID12746837.