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Abstract
We have cloned from a cDNA library of human testis tissue the human homologue to the mouse nuclear orphan receptor NCNF (neuronal cell nuclear factor). The open reading frame encodes a protein of 480 ammo acids, the sequence of which (EMBL accession no. X99975) is 98.3% identical to the mouse homologue. Northern blot analysis of adult human tissues revealed a broad pattern of tissue expression. Similar to NCNF expression in mouse testis, two transcript forms of the single copy gene are expressed in human tissues. The two transcript forms which differ only in their 3′UTR, result in human from differential polyadenylation, in mouse from alternative splicing. Based on the high level of sequence identity of human and murine NCNF, it is likely that also the human nuclear receptor is involved in the control of neurogenesis and gametogenesis.