Abstract:
:Pseudomonas syringae pv. tomato DC3000, a plant pathogenic gram-negative bacterium, employs the type III secretion system (T3SS) to cause disease in tomato and Arabidopsis and to induce the hypersensitive response in nonhost plants. The expression of T3SS is regulated by the HrpL extracytoplasmic sigma factor. Expression of HrpL is controlled by transcriptional activators HrpR and HrpS and negative regulator HrpV. In this study, we analysed the organization of HrpRS and HrpV regulatory proteins and interplay between them. We identified one key residue I26 in HrpS required for repression by HrpV. Substitution of I26 in HrpS abolishes its interaction with HrpV and impairs interactions between HrpS and HrpR and the self-association of HrpS. We show that HrpS self-associates and can associate simultaneously with HrpR and HrpV. We now propose that HrpS has a central role in the assembly of the regulatory HrpRSV complex. Deletion analysis of HrpR and HrpS proteins showed that C-terminal parts of HrpR and HrpS confer determinants indispensable for their self-assembly.
journal_name
FEMS Microbiol Lettjournal_title
FEMS microbiology lettersauthors
Jovanovic M,Lawton E,Schumacher J,Buck Mdoi
10.1111/1574-6968.12476subject
Has Abstractpub_date
2014-07-01 00:00:00pages
201-11issue
2eissn
0378-1097issn
1574-6968journal_volume
356pub_type
信件abstract::A recombinant lipase, CWB-LipB, localized on the Bacillus subtilis cell surface and retaining lipase activity was unstable and not accumulated in a high yield. To improve the accumulation, we examined cell wall binding protease (wprA)- and/or sigma D (sigD)-deficient mutants, and also a NprE and AprA protease-deficien...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2000.tb09188.x
更新日期:2000-07-15 00:00:00
abstract::The TBF-1 is an 11.9-kDa fruiting body specific protein of the Ascomycetes hypogeous fungus Tuber borchii Vittad. found in aqueous extract and the hyphal cell wall. The tbf-1 gene codes a 12-amino acid N-terminal stretch not present in mature protein. This sequence does not match with any homologous signal sequences s...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2007.00748.x
更新日期:2007-07-01 00:00:00
abstract::A novel transposon mutagenesis system for the phytopathogenic bacteria Xanthomonas oryzae pv. oryzae (Xoo) and X. campestris pv. campestris (Xcc) was developed using a Tn5-based transposome. A highly efficient transformation up to 10(6) transformants per microg transposon DNA was obtained. Southern blot and thermal as...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1016/S0378-1097(03)00583-4
更新日期:2003-09-12 00:00:00
abstract::In this study we investigated the potential prebiotic effect of natural (NS) and blanched (BS) almond skins, the latter being a byproduct of the almond-processing industry. A full model of the gastrointestinal tract, including in vitro gastric and duodenal digestion, followed by colonic fermentation using mixed faecal...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2010.01898.x
更新日期:2010-03-01 00:00:00
abstract::Bacterial specific primers were used to amplify 23S rRNA genes from a representative strain from each of the 23 serogroups of the pathogenic Leptospira interrogans and 8 strains from 6 serogroups of the non-pathogenic Leptospira biflexa. Only regions of extreme variability, which had been identified on the basis of ho...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1997.tb10343.x
更新日期:1997-05-01 00:00:00
abstract::The growth of Escherichia coli is inhibited by an antibiotic compound, azaserine (O-diazoacetyl-L-serine). Previous studies revealed the biochemical properties of azaserine, which involves inhibition of various enzymatic reactions as well as introduction of DNA breakage. However, genetically, nothing has been elucidat...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1016/j.femsle.2004.06.017
更新日期:2004-08-01 00:00:00
abstract::Comparison of sequence data is necessary in older to investigate virus origins, identify features common to virulent strains, and characterize genomic organization within virus families. A virulent caliciviral disease of rabbits recently emerged in China. We have sequenced 1100 bases from the 3' ends of two independen...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1016/0378-1097(92)90486-8
更新日期:1992-05-15 00:00:00
abstract::The gene encoding the alpha-subunit of methanol dehydrogenase (mxaF) and its flanking region was isolated from a methylotrophic bacterium, Hyphomicrobium methylovorum GM2. The deduced amino acid sequence of MxaF showed 80, 80, 74 and 66% identity with those of Methylobacterium extorquens AM1, M. organophilum XX, Parac...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1997.tb12673.x
更新日期:1997-09-15 00:00:00
abstract::Acylated homoserine lactone (AHL)-based quorum sensing (QS) has been reported to be present only in Gram-negative microorganisms. Isolation of a novel Gram-positive microorganism from sea water, capable of producing AHL, is reported here. The isolate (GenBank: JF915892, designated as MPO) belonging to the Exiguobacter...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/1574-6968.12123
更新日期:2013-06-01 00:00:00
abstract::In previous work, only one culture (strain TA12) from a pristine site was reported to utilize the xenobiotic compound p-toluenesulfonate (TSA) as a sole source of carbon and energy for aerobic growth. 'Strain TA12' has now been recognized as a community of three bacteria: Achromobacter xylosoxidans TA12-A, Ensifer adh...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2010.02207.x
更新日期:2011-03-01 00:00:00
abstract::Horizontal gene transfer plays a significant role in bacterial evolution and has major clinical importance. Thus, it is vital to understand the mechanisms and kinetics of genetic transformations. Natural transformation is the driving mechanism for horizontal gene transfer in diverse genera of bacteria. Our study intro...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1093/femsle/fnw125
更新日期:2016-07-01 00:00:00
abstract::Mycobacterium leprae incorporated exogenously supplied pyrimidines as bases or nucleosides, but not as a nucleotide, into its nucleic acids. Notably, thymine was incorporated approximately 5 times more rapidly than thymidine by both suspensions of, or intracellular M. leprae. Thymine incorporation was significantly in...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1989.tb03295.x
更新日期:1989-01-15 00:00:00
abstract::Development of pili on cells of Arthrobacter photogonimos is induced by photo-oxidative conditions. The nucleotide sequence was determined of a light-inducible gene (lipA) that encodes the precursor of a light-inducible pilin (designated LIP), a polypeptide of 212 amino acids. The N-terminal leader peptide includes a ...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1998.tb13030.x
更新日期:1998-06-01 00:00:00
abstract::Three strains of Streptococcus uberis isolated from dairy cows with mastitis were co-cultured with a bovine mammary epithelial cell line (MAC-T) in Dulbecco's modified Eagle's medium without fetal bovine serum. Protein profiles from culture supernatants and bacterial pellets among different treatments were compared by...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1998.tb13896.x
更新日期:1998-09-15 00:00:00
abstract::Serum opacity factor (SOF) is produced by group A streptococci belonging to certain M types. SOF cleaves the apolipoprotein component of the high density lipoprotein fraction of serum rendering it insoluble which in turn leads to serum opacity. SfbII protein, a fibronectin binding surface protein cloned from group A s...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1999.tb08692.x
更新日期:1999-09-15 00:00:00
abstract::A novel alphaproteobacterium, designated KMU-156T, was isolated from seawater collected on the coast of Jeju Island, Republic of Korea, and its phylogenetic position was determined using a polyphasic taxonomic approach. Strain KMU-156T was Gram-stain-negative, strictly aerobic, apricot-colored, rod-shaped, non-motile ...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1093/femsle/fnz182
更新日期:2019-08-01 00:00:00
abstract::Eikenella corrodens 33EK(L), a clinical isolate, was assayed for its ability to utilise amino acids as substrates in the reduction of nitrate to nitrite. The metabolism of proline, glutamate, serine and glutamine was found to result in relatively high rates of nitrate reduction. The ability of cells to metabolise thes...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1996.tb08204.x
更新日期:1996-06-01 00:00:00
abstract::We have identified phosphatidylethanolamine as one of the major phospholipids of Clostridium perfringens by two dimensional thin layer chromatography of the intact lipids and of their deacylation products and by liquid chromatography followed by mass spectrometry of the intact neutral phospholipid fraction. The princi...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1016/j.femsle.2004.01.048
更新日期:2004-04-01 00:00:00
abstract::It is known that certain yeast strains, so called 'killers', can produce and excrete proteinaceous toxins that can induce death of other sensitive strains. We obtained a stable fungicidal factor (SKF) through concentration and stabilization of the excretion product of certain killer strains of Saccharomyces cerevisiae...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2006.00113.x
更新日期:2006-03-01 00:00:00
abstract::Xanthomonas campestris pv. campestris (Xcc) is the causal agent of black rot disease in cruciferous plants. The synthesis of known virulence factors in this organism, such as extracellular enzymes and biofilm, is strictly regulated in response to environmental stimuli. Two-component signal transduction systems sense e...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2010.01892.x
更新日期:2010-03-01 00:00:00
abstract::To elucidate the molecular mechanism by which the MexR repressor regulates expression of the MexAB-OprM efflux pump, we investigated MexR and the mexR-mexA intergenic DNA (mexOP) interaction, and transcription of the mexA-lacZ reporter gene containing different lengths of mexOP. Homogeneously purified MexR bound speci...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2001.tb10492.x
更新日期:2001-02-05 00:00:00
abstract::Among the etiological agents of Lyme disease, Borrelia burgdorferi sensu stricto strains carry a 16 kb plasmid, which did not hybridize to plasmids of B. garinii and B. afzelii strains. A 1271 bp DNA fragment of the 16 kb plasmid was cloned. It hybridized to several plasmids of this species (16, 27 and 55 kb). Sequenc...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1997.tb10364.x
更新日期:1997-05-01 00:00:00
abstract::Macrolide is inactivated with ATP plus crude extract of Escherichia coli producing macrolide 2'-phosphotransferase (MPH(2')), but not by living cells. Therefore, a convenient method for detection of MPH(2') using intact cells is needed. In this report, we determine that the modified lysozyme-DNase-RNase (LDR) method (...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1998.tb13227.x
更新日期:1998-10-15 00:00:00
abstract::A large cellulosomal gene cluster was identified in the recently sequenced genome of Clostridium acetobutylicum ATCC 824. Sequence analysis revealed that this cluster contains the genes for the scaffolding protein CipA, the processive endocellulase Cel48A, several endoglucanases of families 5 and 9, the mannanase Man5...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2002.tb11450.x
更新日期:2002-11-19 00:00:00
abstract::The sequence of 1383 nucleotides of the DNA encoding 16S rDNA was determined for strains of human intestinal spirochaetes, comprising an unnamed isolate and "Brachyspira aalborgi" NCTC 11492. A phylogenetic tree was inferred from aligned sequence comparisons between the intestinal spirochaetes, representatives of the ...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1994.tb06790.x
更新日期:1994-04-15 00:00:00
abstract::Coagulase-negative staphylococci (CoNS) are common bacterial colonizers of the human skin. They are often involved in nosocomial infections due to biofilm formation in indwelling medical devices. While biofilm formation has been extensively studied in Staphylococcus epidermidis, little is known regarding other CoNS sp...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1093/femsle/fnv175
更新日期:2015-10-01 00:00:00
abstract::Yeast Cia2p is a component of the cytosolic Fe/S protein assembly (CIA) machinery. Initial studies of the CIA machinery were performed in yeast, but the precise role of Cia2p in this eukaryote is still unknown. We report that CIA2 deficiency results in impaired oxidative stress response, as evidenced by increased sens...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1093/femsle/fnv013
更新日期:2015-03-01 00:00:00
abstract::In this study, a putative N-acetylmuramyl-l-alanine amidase gene (bb0666) was identified in the genome of the Lyme disease spirochete Borrelia burgdorferi. This protein shares c. 30% identity with its counterparts from other bacteria. Reverse transcriptase-PCR analysis showed that bb0666 along with two other genes (bb...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2008.01416.x
更新日期:2009-01-01 00:00:00
abstract::The asexual spore, or conidium, is critical in the life cycle of many fungi because it is the primary means for dispersion and serves as a 'safe house' for the fungal genome in adverse environmental conditions. This review discusses the physiological process of germination, conidial adhesion and initiation of protein ...
journal_title:FEMS microbiology letters
pub_type: 杂志文章,评审
doi:10.1111/j.1574-6968.2001.tb10667.x
更新日期:2001-05-30 00:00:00
abstract::A CO-reactive hemoprotein was purified from the mitochondrial membrane fraction of Tetrahymena pyriformis. It showed absorption peaks at 615 and 455 nm in the reduced form and an alpha peak at 565 nm in the pyridine ferrohemochrome spectrum. Although the spectral properties were apparently similar to those of 'cytochr...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1993.tb06423.x
更新日期:1993-08-15 00:00:00