\pˈiː ˈɛks d͡ʒˈiːnz], \pˈiː ˈɛks dʒˈiːnz], \p_ˈiː_ ˈɛ_k_s dʒ_ˈiː_n_z]\
Definitions of PX GENES
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DNA sequences that form the coding region for at least three proteins which regulate the expression of HUMAN T-LYMPHOTROPIC VIRUS 1 and HUMAN T-LYMPHOTROPIC VIRUS 2. The proteins are p21 (x), p27 (rex), and p40 (tax). The tax (trans-activator x) and rex (regulator x) genes are part of pX but are in overlapping reading frames. X was the original designation for the sequences or region (at that time of unknown function) in the long open reading frame (lor) which is now called pX.
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