the results are consistent with a model proposed by landick and yanofsky ( landick , r. , and yanofsky , c. ( 1987 ) j. mol . biol . 196 , 363-377 ) in which the nusa protein acting as a subunit of rna polymerase in the elongation complex contacts a structure near the 3 ' end of the nascent transcript and uses the binding energy to shift the equilibrium between elongation and paused conformational isomers of the transcription complex in favor of the paused isomer .
C0035681
rna polymerase
C0040649
transcription