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3.1.13.B1
ATP
ATP significantly enhances Rat1/Rai1-mediated RNAPII termination. The ATP-dependent effect seems to be unique to Rat1/Rai1. ATP addition does not stimulate the processivity of Rat1. Rather, it slightly reduces the exonuclease activity because 1 mM of ATP is sufficient to chelate the Mg2+ ion necessary for the nuclease activity of Rat1, suggesting that ATP affects Rat1-mediated termination in a somewhat different manner
751722
3.1.13.B1
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NTP misincorporation induces RNAPII pausing and enhances termination by Rat1/Rai1. When ATP misincorporates into RNA transcripts, the elongation of RNAPII is significantly blocked, presumably due to the disruption and/or rearrangement of the RNAPII active center, RNAPII with a disrupted active center might be more effectively terminated by Rat1/Rai1
751722
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