Assertion: productive elongation | /r/HasSubevent | the synthesis of mrnas
Facets:
Source sentences:
text: P-TEFb is a cyclin dependent kinase that can phosphorylate the DRB sensitivity inducing factor (DSIF) and negative elongation factor (NELF), as well as the carboxyl terminal domain of the large subunit of Pol II and this causes the transition into productive elongation leading to the synthesis of mRNAs.