New AMP-forming acid:CoA ligases from Streptomyces lividans, some of which are posttranslationally regulated by reversible lysine acetylation.

abstract：:The crystal structures of two active forms of dissimilatory sulphite reductase (Dsr) from Desulfovibrio gigas, Dsr-I and Dsr-II, are compared at 1.76 and 2.05 Å resolution respectively. The dimeric α2β2γ2 structure of Dsr-I contains eight [4Fe-4S] clusters, two saddle-shaped sirohaems and two flat sirohydrochlorins. I...

journal_title：Molecular microbiology

authors： Hsieh YC,Liu MY,Wang VC,Chiang YL,Liu EH,Wu WG,Chan SI,Chen CJ

更新日期：2010-12-01 00:00:00

abstract：:The Bacillus thuringiensis insecticidal crystal protein CryIIA has both high mosquito activity and gypsy moth activity; in contrast CryIIB, which is 87% homologous, displays no mosquito activity and has a three-fold lower gypsy moth activity. The regions responsible for specificity against gypsy moth (Lymantria dispar...

journal_title：Molecular microbiology

authors： Liang Y,Dean DH

更新日期：1994-08-01 00:00:00

abstract：:The chaperone/usher (CU) pathway is a conserved bacterial secretion system that assembles adhesive fibres termed pili or fimbriae. Pilus biogenesis by the CU pathway requires a periplasmic chaperone and an outer membrane (OM) assembly platform termed the usher. The usher catalyses formation of subunit-subunit interact...

journal_title：Molecular microbiology

authors： Henderson NS,Ng TW,Talukder I,Thanassi DG

更新日期：2011-02-01 00:00:00

abstract：:The serine-threonine kinase TOR, the Target of Rapamycin, is an important regulator of nutrient, energy and stress signaling in eukaryotes. Sch9, a Ser/Thr kinase of AGC family (the cAMP-dependent PKA, cGMP- dependent protein kinase G and phospholipid-dependent protein kinase C family), is a substrate of TOR. Here, we...

journal_title：Molecular microbiology

authors： Alves de Castro P,Dos Reis TF,Dolan SK,Oliveira Manfiolli A,Brown NA,Jones GW,Doyle S,Riaño-Pachón DM,Squina FM,Caldana C,Singh A,Del Poeta M,Hagiwara D,Silva-Rocha R,Goldman GH

更新日期：2016-11-01 00:00:00

abstract：:A 4.0 kb EcoRI fragment of Bacillus subtilis conferring thiostrepton resistance was cloned and characterized. By nucleotide sequencing of the relevant region, six open reading frames were established, which corresponded to a part of spo0H, a ribosomal protein gene (rpmG), an unidentified open reading frame (orfE), a t...

journal_title：Molecular microbiology

authors： Jeong SM,Yoshikawa H,Takahashi H

更新日期：1993-10-01 00:00:00

abstract：:Conjugative transfer of toxin and antibiotic resistance plasmids in Clostridium perfringens is mediated by the tcp conjugation locus. Surprisingly, neither a relaxase gene nor an origin of transfer (oriT) has been identified on these plasmids, which are typified by the 47 kb tetracycline resistance plasmid pCW3. The t...

journal_title：Molecular microbiology

authors： Wisniewski JA,Traore DA,Bannam TL,Lyras D,Whisstock JC,Rood JI

更新日期：2016-03-01 00:00:00

abstract：:Small regulatory RNAs (sRNAs) are well known to command bacterial protein synthesis by modulating the translation and decay of target mRNAs. Most sRNAs are specifically regulated by a cognate transcription factor under certain growth or stress conditions. Investigations of the conserved Hfq-dependent MicM sRNA in Esch...

journal_title：Molecular microbiology

authors： Vogel J

更新日期：2009-09-01 00:00:00

abstract：:Clp ATPases, which include the ubiquitous HSP100 family, are classified according to their structural features and sequence similarities. During the course of the Bacillus subtilis genome sequencing project, we identified a gene encoding a new member of the HSP100 family. We designated this protein ClpE, as it is the ...

journal_title：Molecular microbiology

authors： Derré I,Rapoport G,Devine K,Rose M,Msadek T

更新日期：1999-05-01 00:00:00

abstract：:Multimer formation reduces plasmid copy number and is an established cause of segregational instability. Nevertheless, it is difficult to rationalize observations that low levels of dimers can cause severe instability, if we assume they are distributed evenly in cell populations. We report here that dimer distribution...

journal_title：Molecular microbiology

authors： Summers DK,Beton CW,Withers HL

更新日期：1993-06-01 00:00:00

abstract：:Like other bacterial species, Mycobacterium tuberculosis has multiple sigma (sigma) factors encoded in its genome. In previously published work, we and others have shown that mutations in some of these transcriptional activators render M. tuberculosis sensitive to various environmental stresses and, in some cases, cau...

journal_title：Molecular microbiology

authors： Manganelli R,Voskuil MI,Schoolnik GK,Dubnau E,Gomez M,Smith I

更新日期：2002-07-01 00:00:00

abstract：:The flow of information from the outside to the inside of bacterial cells is largely directed by protein kinases. In addition to histidine/aspartate phosphorelays of two-component response regulators, recent work in Mycobacterium tuberculosis (Mtb) reinforces the idea that phosphorylation on serine (Ser), threonine (T...

journal_title：Molecular microbiology

authors： Sherman DR,Grundner C

更新日期：2014-10-01 00:00:00

abstract：:Apicoplast, the plastid-like organelle of apicomplexan parasites, has generated interest as a putative drug target. Although transcripts for genes encoded by the 35 kb circular plastid DNA have been detected, the actual presence of their protein products has only been postulated. We provide evidence for translation of...

journal_title：Molecular microbiology

authors： Chaubey S,Kumar A,Singh D,Habib S

更新日期：2005-04-01 00:00:00

abstract：:Initiation of translation involves recognition of the start codon by the initiator tRNA in the 30S subunit. To investigate the role of ribosomal RNA (rRNA) in this process, we isolated a number of 16S rRNA mutations that increase translation from the non-canonical start codon AUC. These mutations cluster to distinct r...

journal_title：Molecular microbiology

authors： Qin D,Fredrick K

更新日期：2009-03-01 00:00:00

abstract：:The S box transcription termination control system regulates expression of genes involved in methionine metabolism. Expression of the S box regulon, comprised of 11 transcriptional units in Bacillus subtilis, is induced in response to starvation for methionine. We previously demonstrated that S-adenosylmethionine (SAM...

journal_title：Molecular microbiology

authors： McDaniel BA,Grundy FJ,Henkin TM

更新日期：2005-08-01 00:00:00

abstract：:In Escherichia coli, the SeqA protein is known as a negative regulator of chromosome replication. This protein is also suggested to have a role in chromosome organization. SeqA preferentially binds to hemi-methylated DNA and is by immunofluorescence microscopy seen as foci situated at the replication factories. Loss o...

journal_title：Molecular microbiology

authors： Klungsøyr HK,Skarstad K

更新日期：2004-10-01 00:00:00

abstract：:The Escherichia coli Sm-like host factor I (Hfq) is thought to play direct and indirect roles in post-transcriptional regulation by targeting small regulatory RNAs and mRNAs. In this study, we have used proteomics to identify new mRNA targets of Hfq. We have identified 11 candidate proteins, synthesis of which was dif...

journal_title：Molecular microbiology

authors： Vecerek B,Moll I,Afonyushkin T,Kaberdin V,Bläsi U

更新日期：2003-11-01 00:00:00

abstract：:We identified interactions between the conserved bacterial replication initiator and transcription factor DnaA and the nucleoid-associated protein Rok of Bacillus subtilis. DnaA binds directly to clusters of DnaA boxes at the origin of replication and elsewhere, including the promoters of several DnaA-regulated genes....

journal_title：Molecular microbiology

authors： Seid CA,Smith JL,Grossman AD

更新日期：2017-03-01 00:00:00

abstract：:Originally annotated as the initiator of fatty acid synthesis (FAS), β-ketoacyl-acyl carrier protein synthase III (KAS III) is a unique component of the bacterial FAS system. Novel variants of KAS III have been identified that promote the de novo use of additional extracellular fatty acids by FAS. These KAS III varian...

journal_title：Molecular microbiology

authors： Lee WC,Jeong MC,Lee Y,Kwak C,Lee JY,Kim Y

更新日期：2018-06-01 00:00:00

abstract：:A family of nine Salmonella typhimurium type III secretion effectors with a conserved amino-terminus have been defined. Three family members (SifA, SifB and SseJ) have previously been demonstrated to localize to the Salmonella-containing vacuole and to Salmonella-induced filaments. In contrast, we demonstrate that two...

journal_title：Molecular microbiology

authors： Miao EA,Brittnacher M,Haraga A,Jeng RL,Welch MD,Miller SI

更新日期：2003-04-01 00:00:00

abstract：:Pseudomonas aeruginosa chronically colonizing the lungs of cystic fibrosis (CF) patients undergoes fast evolution leading to clonal divergence. More than half of the genotypes of P. aeruginosa clone C isolates exclusively from CF lung infection exhibit large chromosomal inversions (LCIs). To analyse the impact of LCIs...

journal_title：Molecular microbiology

authors： Kresse AU,Dinesh SD,Larbig K,Römling U

更新日期：2003-01-01 00:00:00

abstract：:Mycobacterium smegmatis mc2 155 has three genes (MSMEG_6383, furA1; MSMEG_3460, furA2; MSMEG_6253, furA3) encoding FurA (ferric-uptake regulator A) paralogs. Three FurA paralogs in M. smegmatis are functionally redundant and negatively regulate expression of a subset of genes involved in peroxide detoxification such a...

journal_title：Molecular microbiology

authors： Lee HN,Ji CJ,Lee HH,Park J,Seo YS,Lee JW,Oh JI

更新日期：2018-06-01 00:00:00

abstract：:Escherichia coli RnlA-RnlB is a newly identified toxin-antitoxin (TA) system that plays a role in bacteriophage resistance. RnlA functions as a toxin with mRNA endoribonuclease activity and the cognate antitoxin RnlB inhibits RnlA toxicity in E. coli cells. Interestingly, T4 phage encodes the antitoxin Dmd, which acts...

journal_title：Molecular microbiology

authors： Wei Y,Gao ZQ,Otsuka Y,Naka K,Yonesaki T,Zhang H,Dong YH

更新日期：2013-12-01 00:00:00

abstract：:To investigate the determining factors in the selection of the transcription start points (tsp) by RNA polymerase of Escherichia coli, we systematically deleted or substituted single base pairs (bps) at 25 putative critical positions in the two extended -10 promoters, P1 and P2, of the gal operon. These changes extend...

journal_title：Molecular microbiology

authors： Lewis DE,Adhya S

更新日期：2004-11-01 00:00:00

abstract：:Previous studies have shown that in Saccharomyces cerevisiae the mitochondrial and cytoplasmic forms of alanyl-tRNA synthetase are encoded by a single nuclear gene, ALA1, through alternative use of in-frame successive ACG triplets and a downstream AUG triplet. Here we show that despite the obvious participation of the...

journal_title：Molecular microbiology

authors： Huang HY,Tang HL,Chao HY,Yeh LS,Wang CC

更新日期：2006-04-01 00:00:00

abstract：:Mycobacterial genomes contain large sets of loci encoding membrane proteins that belong to a family of multidrug resistance pumps designated Resistance-Nodulation-Cell Division (RND) permeases. Mycobacterial membrane protein Large (MmpL) transporters represent a subclass of RND transporters known to participate in the...

journal_title：Molecular microbiology

authors： Viljoen A,Dubois V,Girard-Misguich F,Blaise M,Herrmann JL,Kremer L

更新日期：2017-06-01 00:00:00

abstract：:The cer-Xer dimer resolution system of plasmid ColE1 is highly selective, acting only at sites on the same molecule and in direct repeat. Recombination requires the XerCD recombinase and accessory proteins ArgR and PepA. The Escherichia coli chromosome dimer resolution site dif and the type II hybrid site use the same...

journal_title：Molecular microbiology

authors： Guhathakurta A,Viney I,Summers D

更新日期：1996-05-01 00:00:00

abstract：:The two-component regulatory system PhoPQ has been shown to regulate the expression of virulence factors in a number of bacterial species. For one such virulence factor, lipopolysaccharide (LPS), the PhoPQ system has been shown to regulate structural modifications in Salmonella enterica var Typhimurium. In Yersinia pe...

journal_title：Molecular microbiology

authors： Hitchen PG,Prior JL,Oyston PC,Panico M,Wren BW,Titball RW,Morris HR,Dell A

更新日期：2002-06-01 00:00:00

abstract：:The molecular chaperone Hsp90 is a regulatory component of some key signalling proteins in the cytosol of eukaryotic cells. For some of these functions, its interaction with co-chaperones is required. Limited proteolysis defined stable folded units of Hsp90. Both an N-terminal (N210) and a C-terminal (262C) fragment i...

journal_title：Molecular microbiology

authors： Scheibel T,Weikl T,Rimerman R,Smith D,Lindquist S,Buchner J

更新日期：1999-11-01 00:00:00

abstract：:A series of plasmids carrying an IRL-kan-IRR transposable cassette, in which IRL and IRR are the left- and right-terminal sequences of IS91, have been constructed. These cassettes could be complemented for transposition with similar efficiency when IS91 transposase was provided either in cis or in trans. A total of 87...

journal_title：Molecular microbiology

authors： Bernales I,Mendiola MV,de la Cruz F

更新日期：1999-07-01 00:00:00

abstract：:Cells require a sensory system and a motility structure to achieve directed movement. Bacteria and archaea possess rotating filamentous motility structures that work in concert with the sensory chemotaxis system. This allows microorganisms to move along chemical gradients. The central response regulator protein CheY c...

journal_title：Molecular microbiology

authors： Li Z,Rodriguez-Franco M,Albers SV,Quax TEF

更新日期：2020-09-01 00:00:00