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1 RNAP (comprising alpha(2), beta, beta', and sigma subunits).
2 7) consensus sequence) by the RNA polymerase sigma subunit.
3 gp55, replace the host RNA polymerase (RNAP) sigma subunit.
4 beta and beta' subunits and the dissociable sigma subunit.
5 interaction between activating region 3 and sigma subunit.
6 eractions between cII and the RNA polymerase sigma subunit.
7 ubunit, and a distinct helical module in the sigma subunit.
8 h core promoter elements are mediated by the sigma subunit.
9 e achieved by modulating the activity of the sigma subunit.
10 ma28, presumably via an interaction with the sigma subunit.
11 meliloti alpha and E. coli beta, beta', and sigma subunits.
12 representative of an unrelated class of the sigma subunits.
13 altered by the association with alternative sigma subunits.
14 tiation activities by binding one of several sigma subunits.
16 Here we show that missense mutations of AP2 sigma subunit (AP2S1) affecting Arg15, which forms key c
19 mediate to the open complex, identifying the sigma subunit as a key player directing formation of the
20 igma factors may explain how RbpA stabilizes sigma subunit binding to the core RNA polymerase and the
22 only between core promoter elements and the sigma subunit, but also between a DNA element upstream o
23 clpX does not influence the concentration of sigma subunits, but is required for the stationary phase
26 quaticus RNAPs, likely through affecting the sigma subunit contacts with DNA nucleotides downstream o
28 Eubacterial RNA polymerase uses the sigma (sigma) subunit for recognition of and transcription init
29 to 15 nucleotides in length, release of the sigma subunit from the enzyme-promoter complex, and init
30 betabeta'omega) and the promoter specificity sigma subunit, has been determined at 4 angstrom resolut
31 similar to that previously reported for the sigma subunit in the bacterial RNA polymerase holoenzyme
32 ng that RbpA binds directly to the principal sigma subunit in these organisms, but not to more diverg
34 e beta subunit and conserved region 4 of the sigma subunit, is a potential target for regulation.
35 AP2, a heterotetramer of alpha, beta, mu and sigma subunits, links clathrin to vesicle membranes and
36 nary substitutions in various regions of the sigma subunit modulate different steps of the open promo
37 ncoding new homologs of the adaptor beta and sigma subunits named beta4 and sigma4, respectively.
44 uence-specific contacts to region 1.2 of the sigma subunit of Escherichia coli RNA polymerase (RNAP).
45 region (region 1.1) of sigma70, the primary sigma subunit of Escherichia coli RNA polymerase, is a n
50 -specific genome segment encoding a putative sigma subunit of RNA polymerase (lmo0423, herein referre
51 ion in bacteria is mediated primarily by the sigma subunit of RNA polymerase (RNAP), which makes sequ
54 question of whether AraC substitutes for the sigma subunit of RNA polymerase in recognition of the -3
60 us mutations in the AP4S1 gene, encoding the sigma subunit of the adaptor protein complex 4 (AP-4).
67 g the promoter by direct DNA interaction (as sigma subunits of bacterial RNA polymerases do) or indir
68 ified residues in the alpha, beta, beta' and sigma subunits of Escherichia coli RNA polymerase that a
70 astid transcription involves nuclear-encoded sigma subunits of plastid-encoded plastid RNA polymerase
73 ween the mobile modules of the beta' and the sigma subunits of the RNAP appears to be necessary for s
79 -pentapeptide, is inhibited by region 3.2 of sigma subunit, possibly preventing targeting of RNA to t
80 promoter recognition depends largely on the sigma subunit, promoter discrimination exhibited in spec
81 Universally conserved basic residues of the sigma subunit provide critical contacts with the DNA pho
83 zero-Angstrom crosslinking demonstrated that sigma subunit region 1.2 directly contacts the nontempla
84 large conformational change that places the sigma subunit region 4 into the correct position for int
87 al RNA polymerase holoenzymes containing the sigma subunit sigma(N) (sigma(54)) can form a stable clo
89 h sporulation, the principal vegetative cell sigma subunit (sigma(A)) persists in the cell but is rep
90 ation of compartment-specific RNA polymerase sigma subunits, sigma(E) in the mother cell and sigma(F)
93 oli genome encodes genes for seven different sigma subunit species while only having single genes for
94 anscription at promoters only if guided by a sigma subunit that directs the core enzyme to a subset o
97 s 1 to 314) and amino acids 94 to 507 of the sigma subunit, together comprising less than one-fifth o
98 transcription depends on the RNA polymerase sigma subunit, which brings catalytically proficient RNA
99 er recognition depends on the RNA polymerase sigma subunit, which combines with the catalytically pro
100 ters are recognized by RNA polymerase (RNAP) sigma subunit, which specifically interacts with the -10
101 during promoter recognition contacts of the sigma subunit with core RNA polymerase and promoter DNA
103 er, along with or instead of interactions of sigma subunit with the -35 element, for their activity.
105 lly at the level of the promoter-recognition sigma subunit, with the general lack of homology between
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