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2016 ; 7
(4
): 133-40
Nephropedia Template TP
gab.com Text
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Super elongation complex contains a TFIIF-related subcomplex
#MMPMID27223670
Knutson BA
; Smith ML
; Walker-Kopp N
; Xu X
Transcription
2016[Aug]; 7
(4
): 133-40
PMID27223670
show ga
Super elongation complex (SEC) belongs to a family of RNA polymerase II (Pol II)
elongation factors that has similar properties as TFIIF, a general transcription
factor that increases the transcription elongation rate by reducing pausing.
Although SEC has TFIIF-like functional properties, it apparently lacks sequence
and structural homology. Using HHpred, we find that SEC contains an
evolutionarily related TFIIF-like subcomplex. We show that the SEC subunit ELL
interacts with the Pol II Rbp2 subunit, as expected for a TFIIF-like factor.
These findings suggest a new model for how SEC functions as a Pol II elongation
factor and how it suppresses Pol II pausing.