2017
Solution structure of domain 1.1 of the sigma(A) factor from Bacillus subtilis is preformed for binding to the RNA polymerase core
ZACHRDLA, Milan, Petr PADRTA, Alzbeta RABATINOVA, Hana SANDEROVA, Ivan BARVIK et. al.Základní údaje
Originální název
Solution structure of domain 1.1 of the sigma(A) factor from Bacillus subtilis is preformed for binding to the RNA polymerase core
Autoři
ZACHRDLA, Milan (203 Česká republika, domácí), Petr PADRTA (203 Česká republika, domácí), Alzbeta RABATINOVA (203 Česká republika), Hana SANDEROVA (203 Česká republika), Ivan BARVIK (203 Česká republika), Libor KRASNY (203 Česká republika) a Lukáš ŽÍDEK (203 Česká republika, garant, domácí)
Vydání
Journal of Biological Chemistry, Bethesda, Amer. Soc. Biochem. Mol. Biol. 2017, 0021-9258
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10600 1.6 Biological sciences
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 4.011
Kód RIV
RIV/00216224:14740/17:00094887
Organizační jednotka
Středoevropský technologický institut
UT WoS
000405485600002
Klíčová slova anglicky
Bacillus; molecular modeling; nuclear magnetic resonance (NMR); protein structure; RNA polymerase; transcription initiation factor
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 28. 2. 2018 16:36, Mgr. Pavla Foltynová, Ph.D.
Anotace
V originále
Bacterial RNA polymerase (RNAP) requires sigma factors to recognize promoter sequences. Domain 1.1 of primary sigma factors (sigma 1.1) prevents their binding to promoter DNA in the absence of RNAP, and when in complex with RNAP, it occupies the DNA-binding channel of RNAP. Currently, two 3D structures of sigma 1.1 are available: from Escherichia coli in complex with RNAP and from T. maritima solved free in solution. However, these two structures significantly differ, and it is unclear whether this difference is due to an altered conformation upon RNAP binding or to differences in intrinsic properties between the proteins from these two distantly related species. Here, we report the solution structure of sigma 1.1 from the Gram-positive bacterium Bacillus subtilis. We found that B. subtilis sigma 1.1 is highly compact because of additional stabilization not present in sigma 1.1 from the other two species and that it is more similar to E. coli sigma 1.1. Moreover, modeling studies suggested that B. subtilis sigma 1.1 requires minimal conformational changes for accommodating RNAP in the DNA channel, whereas T. maritima sigma 1.1 must be rearranged to fit therein. Thus, the mesophilic species B. subtilis and E. coli share the same sigma 1.1 fold, whereas the fold of sigma 1.1 from the thermophile T. maritima is distinctly different. Finally, we describe an intriguing similarity between sigma 1.1 and , an RNAP-associated protein in B. subtilis, bearing implications for the so-far unknown binding site of on RNAP. In conclusion, our results shed light on the conformational changes of sigma 1.1 required for its accommodation within bacterial RNAP.
Návaznosti
GA13-16842S, projekt VaV |
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LM2015043, projekt VaV |
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LQ1601, projekt VaV |
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