pol II transcription complex containing 3 Nucleotide long transcript pol II transcription complex NTP Addition of the third nucleotide on the nascent transcript Authored: Timmers, H. T. M., 2003-09-11 07:42:30 EC Number: 2.7.7.6 Edited: Joshi-Tope, G, 0000-00-00 00:00:00 Formation of the second phosphodiester bond creates a 3-nt product. This short transcript is still loosely associated with the RNA polymerase II initiation complex and can dissociate to yield abortive products, which are not further extended. The transcription complex still requires continued ATP-hydrolysis by TFIIH and remains sensitive to single-stranded oligo-nucleotide inhibition.<p>The open region (“transcription bubble”) expands concomitant with the site of RNA-extension. In this case this region spans positions -9 to +3. Pubmed11784853 Pubmed9405375 Reactome Database ID Release 4375850 Reactome, http://www.reactome.org ReactomeREACT_40