T4 RNA Ligase
Supplier Page from Promega for T4 RNA Ligase
Unit Definition:One unit catalyzes the formation of 1nmol of [5´-32P]rA14–20 into a phosphatase-resistant form in 30 minutes at 37°C in a total volume of 30μl. The reaction conditions are: 50mM Tris-HCl (pH 7.8 at 25°C), 10mM MgCl2, 5mM DTT, 1mM ATP and 10μM [5´-32P]rA14–20.