tokens: The purified recombinant protein was assayed for its enzyme activity by monitoring transfer of [ 3H ] methyl groups from the substrate DNA to the MGMT protein ; the activity was found to be stable at 90 degrees C for at least 30 min .
folded_tokens: the purify recombinant protein be assay for its enzyme activity by monitor transfer of [ 3h ] methyl group from the substrate dna to the mgmt protein ; the activity be find to be stable at 90 degree c for at least 30 min .