Abstract
ABSTRACT Obg, an essential GTP binding protein of Bacillus subtilis , is necessary for stress activation of the ς B transcription factor. We investigated Obg's cellular associations by differential centrifugation of crude B. subtilis extracts, using an anti-Obg antibody as a probe to monitor Obg during the fractionation, and by fluorescent microscopy of a B. subtilis strain in which Obg was fused to green fluorescent protein. The results indicated that Obg is part of a large cytoplasmic complex. In subsequent analyses, Obg coeluted with ribosomal subunits during gel filtration of B. subtilis lysates on Sephacryl S-400 and specifically bound to ribosomal protein L13 in an affinity blot assay. Probing the gel filtration fractions with antibodies specific for ς B and its coexpressed regulators (Rsb proteins) revealed coincident elution of the upstream components of the ς B stress activation pathway (RsbR, -S, and -T) with Obg and the ribosomal subunits. The data implicate ribosome function as a possible mediator of the activity of Obg and the stress induction of ς B .
References
44
Referenced
92
-
Akbar S. Kang C. M. Gaidenko T. A. Price C. W. Modulator protein RsbR regulates environmental signaling in the general stress pathway of Bacillus subtilis.Mol. Microbiol.241997567578
(
10.1046/j.1365-2958.1997.3631732.x
) / Mol. Microbiol. / Modulator protein RsbR regulates environmental signaling in the general stress pathway of Bacillus subtilis by Akbar S. (1997) -
Alper S. Dufour A. Garsin D. A. Duncan L. Losick R. Role of adenosine nucleotides in the regulation of a stress-response transcription factor in Bacillus subtilis.J. Mol. Biol.2601996165177
(
10.1006/jmbi.1996.0390
) / J. Mol. Biol. / Role of adenosine nucleotides in the regulation of a stress-response transcription factor in Bacillus subtilis by Alper S. (1996) 10.1128/jb.174.3.749-757.1992
10.1128/jb.175.8.2347-2356.1993
-
Benson A. K. Haldenwang W. G. Bacillus subtilis ςB is regulated by a binding protein (RsbW) that blocks its association with core RNA polymerase.Proc. Natl. Acad. Sci. USA90199323302334
(
10.1073/pnas.90.6.2330
) / Proc. Natl. Acad. Sci. USA / Bacillus subtilis ςB is regulated by a binding protein (RsbW) that blocks its association with core RNA polymerase by Benson A. K. (1993) 10.1128/jb.175.24.7931-7937.1993
-
Burgess R. R. Purification of overproduced E. coli RNA polymerase ς factors by solubilizing inclusion bodies and refolding in sarkosyl.Methods Enzymol.2731996145149
(
10.1016/S0076-6879(96)73014-8
) / Methods Enzymol. / Purification of overproduced E. coli RNA polymerase ς factors by solubilizing inclusion bodies and refolding in sarkosyl by Burgess R. R. (1996) 10.1128/jb.176.7.1813-1820.1994
10.1128/jb.178.13.3701-9sigma.1996
-
Gaidenko T. A. Yang X. Lee Y. M. Price C. W. Threonine phosphorylation of modulator protein RsbR governs its ability to regulate a serine kinase in the stress signaling pathway of Bacillus subtilis.J. Mol. Biol.28819992939
(
10.1006/jmbi.1999.2665
) / J. Mol. Biol. / Threonine phosphorylation of modulator protein RsbR governs its ability to regulate a serine kinase in the stress signaling pathway of Bacillus subtilis by Gaidenko T. A. (1999) -
Hecker M. Schumann W. Voelker U. Heat-shock and general stress response in Bacillus subtilis.Mol. Microbiol.191996417428
(
10.1046/j.1365-2958.1996.396932.x
) / Mol. Microbiol. / Heat-shock and general stress response in Bacillus subtilis by Hecker M. (1996) 10.1128/jb.172.8.4178-4186.1990
10.1128/jb.179.15.4888-4893.1997
10.1128/jb.172.10.5575-5585.1990
10.1128/jb.178.13.3846-3853.1996
-
Kaziro Y. Itoh H. Kazasa T. Nakafuku M. Satoh T. Structure and function of signal-transducing GTP-binding proteins.Annu. Rev. Biochem.601991349400
(
10.1146/annurev.bi.60.070191.002025
) / Annu. Rev. Biochem. / Structure and function of signal-transducing GTP-binding proteins by Kaziro Y. (1991) 10.1128/jb.176.23.7155-7160.1994
10.1128/JB.181.18.5825-5832.1999
10.1128/jb.179.20.6426-6431.1997
-
March P. E. Membrane-associated GTPases in bacteria.Mol. Microbiol.6199212531257
(
10.1111/j.1365-2958.1992.tb00845.x
) / Mol. Microbiol. / Membrane-associated GTPases in bacteria by March P. E. (1992) -
Mogk A. Homuth G. Scholz C. Kim L. Schmid F. X. Schumann W. The GroE chaperonin machine is a major modulator of the CIRCE heat shock regulon of Bacillus subtilis.EMBO J.16199745794590
(
10.1093/emboj/16.15.4579
) / EMBO J. / The GroE chaperonin machine is a major modulator of the CIRCE heat shock regulon of Bacillus subtilis by Mogk A. (1997) 10.1128/JB.180.11.2895-2900.1998
-
Okamoto S. Ochi K. An essential GTP-binding protein functions as a regulator for differentiation in Streptomyces coelicolor.Mol. Microbiol.301998107119
(
10.1046/j.1365-2958.1998.01042.x
) / Mol. Microbiol. / An essential GTP-binding protein functions as a regulator for differentiation in Streptomyces coelicolor by Okamoto S. (1998) 10.1128/JB.181.18.5718-5724.1999
- Sambrook J. Fritsch E. F. Maniatis T. Molecular cloning: a laboratory manual 2nd ed. 1989 Cold Spring Harbor Laboratory Press Cold Spring Harbor N.Y
-
Sayed A. Matsuyama S. Inouye M. Era, an essential Escherichia coli small G-protein, binds to the 30S ribosomal subunit.Biochem. Biophys. Res. Commun.26419995154
(
10.1006/bbrc.1999.1471
) / Biochem. Biophys. Res. Commun. / Era, an essential Escherichia coli small G-protein, binds to the 30S ribosomal subunit by Sayed A. (1999) 10.1128/JB.181.15.4653-4660.1999
-
Scott J. M. Smirnova N. Haldenwang W. G. A Bacillus-specific factor is needed to trigger the stress-activated phosphatase/kinase cascade of ςB induction.Biochem. Biophys. Res. Commun.2571999106110
(
10.1006/bbrc.1999.0418
) / Biochem. Biophys. Res. Commun. / A Bacillus-specific factor is needed to trigger the stress-activated phosphatase/kinase cascade of ςB induction by Scott J. M. (1999) 10.1128/JB.180.14.3671-3680.1998
10.1128/jb.171.3.1362-1371.1989
-
Van Bogelen R. A. Neidhardt F. C. Ribosomes as sensors of heat and cold shock in Escherichia coli.Proc. Natl. Acad. Sci. USA87199055895593
(
10.1073/pnas.87.15.5589
) / Proc. Natl. Acad. Sci. USA / Ribosomes as sensors of heat and cold shock in Escherichia coli by Van Bogelen R. A. (1990) 10.1128/jb.177.11.3308-3311.1995
-
Vijay K. Brody M. S. Fredlund E. Price C. W. A PP2C phosphatase containing a PA5 domain is required to convey signals of energy stress to the ςB transcription factor of Bacillus subtilis.Mol. Microbiol.352000180188
(
10.1046/j.1365-2958.2000.01697.x
) / Mol. Microbiol. / A PP2C phosphatase containing a PA5 domain is required to convey signals of energy stress to the ςB transcription factor of Bacillus subtilis by Vijay K. (2000) -
Voelker U. Engelmann S. Maul B. Riethdorf S. Voelker A. Schmid R. Mach H. Hecker M. Analysis of the induction of general stress proteins of Bacillus subtilis.Microbiology1401994741752
(
10.1099/00221287-140-4-741
) / Microbiology / Analysis of the induction of general stress proteins of Bacillus subtilis by Voelker U. (1994) 10.1128/jb.177.1.114-122.1995
10.1128/jb.179.6.1980-1984.1997
-
Voelker U. Maul B. Hecker M. Expression of the ςB-dependent general stress regulon confers multiple stress resistance in Bacillus subtilis.J. Bacteriol.181199939423948
(
10.1128/JB.181.13.3942-3948.1999
) / J. Bacteriol. / Expression of the ςB-dependent general stress regulon confers multiple stress resistance in Bacillus subtilis by Voelker U. (1999) 10.1128/jb.178.18.5456-5463.1996
10.1128/jb.177.13.3771-3780.1995
10.1128/jb.176.23.7161-7168.1994
10.1128/jb.177.1.123-133.1995
-
Yang X. Kang C. M. Brody M. S. Price C. W. Opposing pairs of serine protein kinases and phosphatases transmit signals of environmental stress to activate a bacterial transcription factor.Genes Dev.10199622652275
(
10.1101/gad.10.18.2265
) / Genes Dev. / Opposing pairs of serine protein kinases and phosphatases transmit signals of environmental stress to activate a bacterial transcription factor by Yang X. (1996) 10.1128/jb.113.2.540-548.1973
-
Yura T. Nagai H. Mori H. Regulation of the heat-shock response in bacteria.Annu. Rev. Microbiol.471993321350
(
10.1146/annurev.mi.47.100193.001541
) / Annu. Rev. Microbiol. / Regulation of the heat-shock response in bacteria by Yura T. (1993)
Dates
Type | When |
---|---|
Created | 23 years, 1 month ago (July 27, 2002, 6 a.m.) |
Deposited | 4 years, 1 month ago (July 29, 2021, 1:52 p.m.) |
Indexed | 2 months ago (July 2, 2025, 2:31 p.m.) |
Issued | 25 years, 3 months ago (May 15, 2000) |
Published | 25 years, 3 months ago (May 15, 2000) |
Published Print | 25 years, 3 months ago (May 15, 2000) |
@article{Scott_2000, title={The Bacillus subtilis GTP Binding Protein Obg and Regulators of the ς B Stress Response Transcription Factor Cofractionate with Ribosomes}, volume={182}, ISSN={1098-5530}, url={http://dx.doi.org/10.1128/jb.182.10.2771-2777.2000}, DOI={10.1128/jb.182.10.2771-2777.2000}, number={10}, journal={Journal of Bacteriology}, publisher={American Society for Microbiology}, author={Scott, Janelle M. and Ju, Jingliang and Mitchell, Theresa and Haldenwang, W. G.}, year={2000}, month=may, pages={2771–2777} }