Abstract:
:Mannitol is the major compatible solute, next to glutamate, synthesized by the opportunistic human pathogen Acinetobacter baumannii under low water activities. The key enzyme for mannitol biosynthesis, MtlD, was identified. MtlD is highly similar to the bifunctional mannitol-1-phosphate dehydrogenase/phosphatase from Acinetobacter baylyi. After deletion of the mtlD gene from A. baumannii ATCC 19606T cells no longer accumulated mannitol and growth was completely impaired at high salt. Addition of glycine betaine restored growth, demonstrating that mannitol is an important compatible solute in the human pathogen. MtlD was heterologously produced and purified. Enzyme activity was strictly salt dependent. Highest stimulation was reached at 600 mmol/L NaCl. Addition of different sodium as well as potassium salts restored activity, with highest stimulations up to 41 U/mg protein by sodium glutamate. In contrast, an increase in osmolarity by addition of sugars did not restore activity. Regulation of mannitol synthesis was also assayed at the transcriptional level. Reporter gene assays revealed that expression of mtlD is strongly dependent on high osmolarity, not discriminating between different salts or sugars. The presence of glycine betaine or its precursor choline repressed promoter activation. These data indicate a dual regulation of mannitol production in A. baumannii, at the transcriptional and the enzymatic level, depending on high osmolarity.
journal_name
Microbiologyopenjournal_title
MicrobiologyOpenauthors
Zeidler S,Hubloher J,König P,Ngu ND,Scholz A,Averhoff B,Müller Vdoi
10.1002/mbo3.614subject
Has Abstractpub_date
2018-12-01 00:00:00pages
e00614issue
6issn
2045-8827journal_volume
7pub_type
杂志文章相关文献
MicrobiologyOpen文献大全abstract::RodZ is important for maintaining the rod shape of Escherichia coli. Loss of RodZ causes conversion of the rod shape to a round shape and a growth rate slower than that of wild-type cells. Suppressor mutations that simultaneously restore both the growth rates and the rod shape were isolated. Most of the suppressor mut...
journal_title:MicrobiologyOpen
pub_type: 杂志文章
doi:10.1002/mbo3.116
更新日期:2013-10-01 00:00:00
abstract::Urinary tract infections (UTIs) are among the most common bacterial infections in humans. Although a number of bacteria can cause UTIs, most cases are due to infection by uropathogenic Escherichia coli (UPEC). UPEC are a genetically heterogeneous group that exhibit several virulence factors associated with colonizatio...
journal_title:MicrobiologyOpen
pub_type: 杂志文章
doi:10.1002/mbo3.756
更新日期:2019-06-01 00:00:00
abstract::Basic cosmetics was used by volunteers belonging to high (HHG) and low (LHG) hydration groups for 4 weeks, and bacterial communities and biophysical parameters in facial skin were analyzed. Hydration level increases and transepidermal water loss and roughness decreases were observed in both groups after cosmetic use. ...
journal_title:MicrobiologyOpen
pub_type: 杂志文章
doi:10.1002/mbo3.557
更新日期:2018-04-01 00:00:00
abstract::Root canal irrigation is an important adjunct to control microbial infection. The aim of this study was to investigate the effect of 2.5% (wt/vol) sodium hypochlorite (NaOCl) agitation on the removal, killing, and degradation of Enterococcus faecalis biofilm. A total of 45 root canal models were manufactured using 3D ...
journal_title:MicrobiologyOpen
pub_type: 杂志文章
doi:10.1002/mbo3.455
更新日期:2017-08-01 00:00:00
abstract::The small hive beetle (SHB) is an opportunistic parasite that feeds on bee larvae, honey, and pollen. While SHBs can also feed on fruit and other plant products, like its plant-feeding relatives, SHBs prefer to feed on hive resources and only reproduce inside bee colonies. As parasites, SHBs are inevitably exposed to ...
journal_title:MicrobiologyOpen
pub_type: 杂志文章
doi:10.1002/mbo3.899
更新日期:2019-10-01 00:00:00
abstract::Vibrio coralliilyticus is an important coral pathogen demonstrated to cause disease outbreaks worldwide. This study investigated the feasibility of applying bacteriophage therapy to treat the coral pathogen V. coralliilyticus. A specific bacteriophage for V. coralliilyticus strain P1 (LMG23696), referred to here as ba...
journal_title:MicrobiologyOpen
pub_type: 杂志文章
doi:10.1002/mbo3.52
更新日期:2013-02-01 00:00:00
abstract::The intraspecies genomic diversity of the single-strand RNA (+) virus species hepatitis A virus (Hepatovirus), hepatitis C virus (Hepacivirus), and hepatitis E virus (Orthohepevirus) was compared. These viral species all can cause liver inflammation (hepatitis), but share no gene similarity. The codon usage of human h...
journal_title:MicrobiologyOpen
pub_type: 杂志文章
doi:10.1002/mbo3.973
更新日期:2020-02-01 00:00:00
abstract::Extracts from white birch have been reported to possess antimicrobial properties, but no study has linked the chemical composition of bark extract with antimicrobial activity. This study aimed to identify white birch (Betula papyrifera Marshall) bark extracts with antimicrobial activity and elucidate its composition. ...
journal_title:MicrobiologyOpen
pub_type: 杂志文章
doi:10.1002/mbo3.944
更新日期:2020-01-01 00:00:00
abstract::Despite the relevance of landscape, regarding the spatial patterning of microbial communities and the relative influence of environmental parameters versus human activities, few investigations have been conducted at this scale. Here, we used a systematic grid to characterize the distribution of soil microbial communit...
journal_title:MicrobiologyOpen
pub_type: 杂志文章
doi:10.1002/mbo3.255
更新日期:2015-06-01 00:00:00
abstract::FtsZ - a prokaryotic tubulin homolog - is one of the central components of bacterial division machinery. At the early stage of cytokinesis FtsZ forms the so-called Z-ring at mid-cell that guides septum formation. Many approaches were used to resolve the structure of the Z-ring, however, researchers are still far from ...
journal_title:MicrobiologyOpen
pub_type: 杂志文章
doi:10.1002/mbo3.336
更新日期:2016-06-01 00:00:00
abstract::Pseudomonas aeruginosa is a good environmental microorganism capable of degrading decabromodiphenyl ether (BDE-209). This paper studied the effect of Cu2+ and humic acid (HA) extracted from e-waste contaminated soils on biodegradation of BDE-209 by P. aeruginosa. The adsorption isotherms of Cu2+ on HA, the crude enzym...
journal_title:MicrobiologyOpen
pub_type: 杂志文章
doi:10.1002/mbo3.439
更新日期:2017-06-01 00:00:00
abstract::This study compared the sensitivity of spores from virulent and attenuated Bacillus anthracis strains in suspension to inactivation by various chemical disinfectants. Spore suspensions from two virulent strains (A0256 and A0372) and two attenuated strains (Sterne and A0141) of B. anthracis were tested against two alde...
journal_title:MicrobiologyOpen
pub_type: 杂志文章
doi:10.1002/mbo3.45
更新日期:2012-12-01 00:00:00
abstract::Dinitrogen fixation, the biological reduction in N2 gas to ammonia contributes to the supply of new nitrogen in the surface ocean. To understand the diversity and abundance of potentially diazotrophic (N2 fixing) microorganisms associated with marine zooplankton, especially copepods, the nifH gene was studied using zo...
journal_title:MicrobiologyOpen
pub_type: 杂志文章
doi:10.1002/mbo3.385
更新日期:2016-12-01 00:00:00
abstract::Microbial biofilms are communities of surface-adhered cells enclosed in a matrix of extracellular polymeric substances. Bacterial cells in biofilm are 10~1,000-fold more resistant to antimicrobials than the planktonic cells. Burgeoning antibiotic resistance in Pseudomonas aeruginosa biofilm has necessitated the develo...
journal_title:MicrobiologyOpen
pub_type: 杂志文章
doi:10.1002/mbo3.545
更新日期:2018-02-01 00:00:00
abstract::Proteins are the most diverse structures on bacterial surfaces; hence, they are candidates for species- and strain-specific interactions of bacteria with the host, environment, and other microorganisms. Genomics has decoded thousands of bacterial surface and secreted proteins, yet the function of most cannot be predic...
journal_title:MicrobiologyOpen
pub_type: 杂志文章
doi:10.1002/mbo3.53
更新日期:2013-02-01 00:00:00
abstract::Microorganisms require a motility structure to move towards optimal growth conditions. The motility structure from archaea, the archaellum, is fundamentally different from its bacterial counterpart, the flagellum, and is assembled in a similar fashion as type IV pili. The archaellum filament consists of thousands of c...
journal_title:MicrobiologyOpen
pub_type: 杂志文章
doi:10.1002/mbo3.718
更新日期:2019-05-01 00:00:00
abstract::Brazil is the biggest producer of sweet oranges and the main exporter of concentrated orange juice in the world. Among the diseases that affect citriculture, Asiatic citrus canker, caused by the bacterial pathogen Xanthomonas citri, represents one of the most significant threats. The current Brazilian legislation regu...
journal_title:MicrobiologyOpen
pub_type: 杂志文章
doi:10.1002/mbo3.1104
更新日期:2020-09-01 00:00:00
abstract::As part of the culturomics project aiming at describing the human microbiota, we report in this study the description of the new bacterial genus Raoultibacter gen. nov. that includes two new species, that is, R. massiliensis sp. nov. and R. timonensis sp. nov. The R. massiliensis type strain Marseille-P2849T was isola...
journal_title:MicrobiologyOpen
pub_type: 杂志文章
doi:10.1002/mbo3.758
更新日期:2019-06-01 00:00:00
abstract::In cyanobacteria, genes conferring mercury resistance are not organized as mer-operon, unlike in other bacterial phyla. Synechocystis contains only a putative MerR regulator, Slr0701, and a mercury reductase, MerA, located aside from each other in the genome. The slr0701-mutant showed reduction in photosynthetic activ...
journal_title:MicrobiologyOpen
pub_type: 杂志文章
doi:10.1002/mbo3.838
更新日期:2019-09-01 00:00:00
abstract::Bacterial community structures were evaluated in oil samples using culture-independent pyrosequencing, including oil mousses collected on sea surface and salt marshes during the Deepwater Horizon oil spill, and oil deposited in sediments adjacent to the wellhead 1 year after the spill. Phylogenetic analysis suggested ...
journal_title:MicrobiologyOpen
pub_type: 杂志文章
doi:10.1002/mbo3.89
更新日期:2013-06-01 00:00:00
abstract::[NiFe]-hydrogenases catalyze the reversible conversion of molecular hydrogen into protons end electrons. This reaction takes place at a NiFe(CN)2 (CO) cofactor located in the large subunit of the bipartite hydrogenase module. The corresponding apo-protein carries usually a C-terminal extension that is cleaved off by a...
journal_title:MicrobiologyOpen
pub_type: 杂志文章
doi:10.1002/mbo3.1029
更新日期:2020-06-01 00:00:00
abstract::Metal- and pesticide-tolerant biocontrol agents are preferred in integrated pest management, as such strains can be applied in combination with different pesticides. The Bacillus velezensis strain SZMC 6161J proved to be sensitive to copper, nickel, zinc, and cadmium, while manganese elevated its growth. At concentrat...
journal_title:MicrobiologyOpen
pub_type: 杂志文章
doi:10.1002/mbo3.660
更新日期:2019-03-01 00:00:00
abstract::Protein lysine acetylation, a dynamic and reversible posttranslational modification, plays a crucial role in several cellular processes, including cell cycle regulation, metabolism, enzymatic activities, and protein interactions. Brenneria nigrifluens is a pathogen of walnut trees with shallow bark canker and can caus...
journal_title:MicrobiologyOpen
pub_type: 杂志文章
doi:10.1002/mbo3.952
更新日期:2020-01-01 00:00:00
abstract::The effect of elevated atmospheric CO2 concentration [CO2 ] on the diversity and composition of the prokaryotic community inhabiting the rhizosphere of winter barley (Hordeum vulgare L.) was investigated in a field experiment, using open-top chambers. Rhizosphere samples were collected at anthesis (flowering stage) fr...
journal_title:MicrobiologyOpen
pub_type: 杂志文章
doi:10.1002/mbo3.462
更新日期:2017-08-01 00:00:00
abstract::Copper resistance system in the cyanobacterium Synechocystis sp. PCC 6803 comprises two operons, copMRS and copBAC, which are expressed in response to copper in the media. copBAC codes for a heavy-metal efflux-resistance nodulation and division (HME-RND) system, while copMRS codes for a protein of unknown function, Co...
journal_title:MicrobiologyOpen
pub_type: 杂志文章
doi:10.1002/mbo3.231
更新日期:2015-02-01 00:00:00
abstract::The dynamics of swimming microorganisms is strongly affected by solid-liquid and air-liquid interfaces. In this paper, we characterize the motion of both single bacteria and microcolonies at an air-liquid interface. Both of them follow circular trajectories. Single bacteria preferentially show a counter-clockwise moti...
journal_title:MicrobiologyOpen
pub_type: 杂志文章
doi:10.1002/mbo3.532
更新日期:2018-02-01 00:00:00
abstract::In Escherichia coli, coordinated activation and deactivation of DnaA allows for proper timing of the initiation of chromosomal synthesis at the origin of replication (oriC) and assures initiation occurs once per cell cycle. In vitro, acidic phospholipids reactivate DnaA, and in vivo depletion of acidic phospholipids, ...
journal_title:MicrobiologyOpen
pub_type: 杂志文章
doi:10.1002/mbo3.46
更新日期:2012-12-01 00:00:00
abstract::The objective of this study was to phylogenetically analyze microorganisms from the domains Bacteria and Archaea in hypersaline sediment from Death Valley National Park. Using domain-specific primers, a region of the 16S rRNA gene was amplified using polymerase chain reaction (PCR), and the product was subsequently us...
journal_title:MicrobiologyOpen
pub_type: 杂志文章
doi:10.1002/mbo3.20
更新日期:2012-06-01 00:00:00
abstract::Type II toxin-antitoxin (TA) modules are thought to mediate stress-responses by temporarily suppressing protein synthesis while cells redirect transcription to adapt to environmental change. Here, we show that YoeB, a ribosome-dependent mRNase toxin, is activated in Escherichia coli cells grown at elevated temperature...
journal_title:MicrobiologyOpen
pub_type: 杂志文章
doi:10.1002/mbo3.272
更新日期:2015-08-01 00:00:00
abstract::Trying to widen the discussion on the risks associated with dental waste, this study proposed to investigate and genetically compare yeast isolates recovered from dental solid waste and waste workers. Three samples were collected from workers' hands, nasal mucosa, and professional clothing (days 0, 30, and 180), and t...
journal_title:MicrobiologyOpen
pub_type: 杂志文章
doi:10.1002/mbo3.554
更新日期:2018-04-01 00:00:00