Papers of the month
2011
- November 2011
- Locke et al. demonstrate how the SigB-dependent general stress response is controlled by signals using stochastic pulse frequency modulation through a compact regulatory architecture.
- Relevant SubtiWiki pages: Michael Elowitz, SigB, General stress proteins (controlled by SigB)
Locke JC, Young JW, Fontes M, Hernández Jiménez MJ, Elowitz MB Stochastic pulse regulation in bacterial stress response. Science. 2011 334:366-369. PubMed:21815947
- October 2011
- Richards et al. identify the nudix hydrolase RppH as the pyrophosphohydrolase that triggers 5'-exonucleolytic degradation of mRNA by RNase J1 in B. subtilis.
- Relevant SubtiWiki pages: David Bechhofer, Ciaran Condon, RNA processing and degradation, nudix hydrolase, RppH, RNase J1
- September 2011
- A series of papers deals with RNA processing and degradation in B. subtilis. Three papers establish that RNase Y is the functional equivalent of RNase E from E. coli. Moreover, the role of RNase J1 in endonucleolytic cleavage of the trp leader mRNA is demonstrated.
- Relevant SubtiWiki pages: David Bechhofer, Rick Lewis, Ulrike Mäder, Harald Putzer, Jörg Stülke, RNases, RNA degradosome, RNase Y, RNase Y targets, RNase J1
Lehnik-Habrink M, Schaffer M, Mäder U, Diethmaier C, Herzberg C, Stülke J RNA processing in Bacillus subtilis: identification of targets of the essential RNase Y. Mol Microbiol. 2011 81(6): 1459-73. PubMed:21815947
- August 2011
- Chi et al. demonstrate that S-bacillithiolation of the repressor OhrR and of four enzymes of the methionine biosynthesis pathway protects the B. subtilis cell against hypochlorite stress.
- Relevant SubtiWiki pages: Haike Antelmann, Dörte Becher, Ulrike Mäder, resistance against oxidative and electrophile stress, Spx regulon, CtsR regulon, PerR regulon, OhrR, MetE, YxjG, PpaC, SerA, YphP
- July 2011
- Domínguez-Escobar et al. from Rut Carballido-Lopez' lab and Garner et al. report that movement of actin-like filaments is driven by the peptidoglycan elongation machinery. Both papers suggest that the MreB-like filaments serve to restrict the mobility of the peptidoglycan synthesizing machinery
- Relevant SubtiWiki pages: Rut Carballido-Lopez, David Rudner, MreB, MreBH, Mbl, MreC, MreD, PbpA, RodA, RodZ, penicillin-binding proteins, cell shape, cell wall synthesis, cell wall biosynthetic complex
- Domínguez-Escobar et al. from Rut Carballido-Lopez' lab and Garner et al. report that movement of actin-like filaments is driven by the peptidoglycan elongation machinery. Both papers suggest that the MreB-like filaments serve to restrict the mobility of the peptidoglycan synthesizing machinery
- A comment on these papers:
- June 2011
- Oppenheimer-Shaanan et al. from Sigal Ben-Yehuda's lab report that cyclic di-AMP acts as a secondary messenger that couples DNA integrity with progression of sporulation
- Relevant SubtiWiki pages: Sigal Ben-Yehuda, DisA, YybT, metabolism of signalling nucleotides, cell division
- Oppenheimer-Shaanan et al. from Sigal Ben-Yehuda's lab report that cyclic di-AMP acts as a secondary messenger that couples DNA integrity with progression of sporulation
- May 2011
- Miles et al. identified the enzyme for the key final step in the biosynthesis of queuosine, a hypermodified base found in the wobble positions of tRNA Asp, Asn, His, and Tyr from bacteria to man
- Relevant SubtiWiki pages: QueG, translation
- Miles et al. identified the enzyme for the key final step in the biosynthesis of queuosine, a hypermodified base found in the wobble positions of tRNA Asp, Asn, His, and Tyr from bacteria to man
Zachary D Miles, Reid M McCarty, Gabriella Molnar, Vahe Bandarian
Discovery of epoxyqueuosine (oQ) reductase reveals parallels between halorespiration and tRNA modification.
Proc Natl Acad Sci U S A: 2011, 108(18);7368-72
[PubMed:21502530]
[WorldCat.org]
[DOI]
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