Abstract:
:Pseudomonas seleniipraecipitans grows in the presence of high levels of selenite and selenate and reduces both oxyanions to elemental selenium (Se(0)), a property that may make P. seleniipraecipitans useful as an inoculant for biobarriers designed to remove selenite or selenate from ground or surface waters. An earlier study showed that P. seleniipraecipitans nitrate reductase reduced selenate to Se(0), but failed to identify the protein(s) involved in selenite reduction. This study used ammonium sulfate precipitation, hydrophobic interaction chromatography, and native PAGE to isolate two electrophoretic gel regions, identified as bands A and B that showed selenite-reductase-activity. Proteomics was used to identify the proteins present in those regions. Glutathione reductase (GR) was detected in the A-band; based on this information, Saccharomyces cerevisiae GR, obtained from a commercial source, was evaluated and found to have selenite-reductase-activity, confirming that GR can reduce selenite to Se(0). Proteomics was also used to detect the proteins present in the B-band and thioredoxin reductase (ThxR) was detected as a B-band protein; based on this information, E. coli ThxR, obtained from a commercial source, was evaluated and found to have selenite-reductase-activity, confirming that ThxR can reduce selenite to elemental selenium. Thus, evidence presented in this study shows that S. cerevisiae GR and E. coli ThxR can reduce SeO3 (2-) to Se(0) and strongly suggests that P. seleniipraecipitans GR and ThxR can also reduce SeO3 (2-) to Se(0).
journal_name
Curr Microbioljournal_title
Current microbiologyauthors
Hunter WJdoi
10.1007/s00284-014-0555-2subject
Has Abstractpub_date
2014-07-01 00:00:00pages
69-74issue
1eissn
0343-8651issn
1432-0991journal_volume
69pub_type
杂志文章abstract::The newly identified 2019 novel coronavirus (SARS-CoV-2) has become a public health concern globally posing a significant threat to human health and economy and creating an unprecedented crisis in all spheres of the global life. Emergence of new genotypes of SARS-CoV during the last few years has pointed out the limit...
journal_title:Current microbiology
pub_type: 杂志文章,评审
doi:10.1007/s00284-020-02310-x
更新日期:2021-01-03 00:00:00
abstract::Coral mucus-degrading bacteria were isolated by an enrichment culture procedure. The isolates were able to grow as pure cultures on 10% sterilized mucus in seawater, yielding 10(8) CFU/ml. The isolates, mostly Vibrio strains, were classified by classical and molecular methods. When carbon, nitrogen, and phosphorus com...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-008-9100-5
更新日期:2008-05-01 00:00:00
abstract::Fifty-one Bifidobacterium strains were isolated from the feces of healthy adults (30-40 years old) and seniors (older than 70 years of age). B. adolescentis, B. breve, B. infantis, and B. longum were isolated from the healthy adults and B. adolescentis and B. longum from elderly subjects. The tested bacteria bound, in...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s002840010315
更新日期:2001-11-01 00:00:00
abstract::Lactic and butyric acid production by bacterial flocs in a continuous culture obeyed different physiological constraints. The butyric acid rate of production was constant and independent of the growth rate [0.012 +/- 0.001 gBUT/(L.h)], whereas lactic fermentation occurred only beyond a critical growth rate (0.25 +/- 0...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-003-4169-3
更新日期:2004-03-01 00:00:00
abstract::Hepatitis B virus (HBV) infection remains a major health concern with more than 350 million carriers in the world. It is associated with acute and chronic liver diseases including hepatocellular carcinoma (HCC). The early detection of severe liver diseases related to HBV is crucial for the effective treatment. This wo...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-010-9608-3
更新日期:2010-10-01 00:00:00
abstract::An in vitro study was conducted to examine the metabolism of histidine (His) by mixed rumen bacteria (B), mixed rumen protozoa (P), and a combination of the two (BP). Rumen microorganisms were collected from fistulated goats fed with lucerne cubes (Medicago sativa) and a concentrate mixture twice a day. Microbial susp...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s002840010170
更新日期:2001-01-01 00:00:00
abstract::The 5' untranslated region and the orf1 sequence from the cry2Aa1 operon from Bacillus thuringiensis subsp. kurstaki NRD-12 were sequenced and compared to that from strain HD-1. The start codon described in HD-1 does not yield in NRD-12 a protein of the expected size of 20 kDa, but a 10-amino acid peptide. A second, h...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/pl00006828
更新日期:1999-07-01 00:00:00
abstract::Wolbachia are strictly intracellular maternally inherited alpha-proteobacteria, largely widespread among arthropods and filariids (i.e., filarial nematodes). Wolbachia capacities to infect new host species have been greatly evidenced and the transfer of Wolbachia between arthropods and filariids has probably occurred ...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-006-0578-4
更新日期:2007-09-01 00:00:00
abstract::A 11.2-kb fragment containing the ectABC genes of the biosynthetic pathway of ectoine from the Gram-positive, moderately halophilic bacterium Halobacillus dabanensis D-8(T) was obtained by inverse polymerase chain reaction. Subsequently, the entire ectABC cluster was cloned and analyzed. It revealed that the intergeni...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-005-0396-0
更新日期:2006-09-01 00:00:00
abstract::The abundance and diversity of chemotactic heterotrophic bacteria associated with Arctic cyanobacteria was determined. The viable numbers ranged between 10(4) and 10(6) cell g(-1) cyanobacterial biomass. A total of 112 morphotypes, representing 22 phylotypes based on their 16S rRNA sequence similarity were isolated fr...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-012-0243-z
更新日期:2013-01-01 00:00:00
abstract::Streptomyces coelicolor is the soil-dwelling bacterium with a complex life cycle and a strong ability to produce plenty of secondary metabolites which are strictly regulated by a variety of regulators. Amino acid alignment shows that the deduced protein of SCO2140 belongs to the family of Leucine-responsive regulatory...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-016-1050-8
更新日期:2016-08-01 00:00:00
abstract::Erwinia amylovora causes fire blight of apple, pear, and other members of the Rosaceae family. The enzyme LuxS catalyzes the last step in the production of autoinducer-2 (AI-2), a molecule implicated with quorum sensing in many bacterial species. It is now well recognized that LuxS also plays a central role in sulfur ...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-008-9256-z
更新日期:2009-01-01 00:00:00
abstract::The alphaproteobacterial strain JLT2003(T) was isolated from surface seawater off the coast of Guishan island, Taiwan. The strain was Gram negative, ovoid or coccoid, non-motile and formed pink colonies on marine agar 2216 (MA; DIFCO) medium. The dominant fatty acids were C(18:1)ω7c, cyclo C(19:0)ω8c, and C(16:0). The...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-012-0081-z
更新日期:2012-04-01 00:00:00
abstract::The outer membrane protein of Photobacterium damsela (OMP-PD) and the gene encoding for this porin protein were isolated and characterized. The deduced amino acid sequence of the OMP-PD monomer has 338 amino acids and a calculated molecular weight of 36,951 Da. This sequence includes a 22-amino acid signal peptide at ...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-003-4111-8
更新日期:2004-03-01 00:00:00
abstract::Lactic-acid-producing bacteria (LABs) are known to have immunomodulating activity. In the current study, various LABs were tested for their immunity-enhancing activity, especially the phagocytic activity of leukocytes. Viable but not heat-killed cells of Weissella kimchii strain PL9001, Lactobacillus fermentum strain ...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-004-4377-5
更新日期:2005-01-01 00:00:00
abstract::An isolate of Lactococcus lactis from fermented milk was found to produce a bacteriocin peptide. The isolate could grow in a medium with an initial pH of 11.0, in which it produced the bacteriocin extracellularly at the highest level. The level of the bacteriocin in the medium increased in parallel to the bacterial gr...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-005-4545-2
更新日期:2005-09-01 00:00:00
abstract::The limitation of phosphate concentrations in effluents is of international concern because of the risk of eutrophication.Acinetobacter spp. have often been isolated from activated sludge plants exhibiting enhanced phosphate removal. The ability to remove phosphate from mixed liquor byAcinetobacter isolates and refere...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/BF01576016
更新日期:1993-09-01 00:00:00
abstract::The Bacillus subtilis pur operon repressor (PurR) has a PRPP (5-phosphoribosyl 1-pyrophosphate) binding motif at residues 199-211. Two PurR PRPP binding region mutations (D203A and D204A) were constructed, and the effects on binding of repressor to the pur operon control site in vitro and on regulation of pur operon e...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s002840010091
更新日期:2000-07-01 00:00:00
abstract::Using a previously created Mycobacterium avium genomic library with GFP-promoter trap in Mycobacterium smegmatis, we screened for genes that are upregulated upon infection of A. castellanii. Clones exhibiting a 2.5-fold or greater increase in GFP expression, out of a total of 10,000 clones, were selected for further e...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-005-0218-4
更新日期:2006-02-01 00:00:00
abstract::Bacillus sp. TYF-LIM-B05, which is isolated from spoilage vinegar, is resistant to high temperature, high concentrated alcohol, acid, and salt, and can produce ethanol from mono-, di-, polysaccharide, and complex biomass as the sole carbon source. Thus, this strain is a potential candidate for consolidated bioprocessi...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-019-01833-2
更新日期:2020-03-01 00:00:00
abstract::This study genetically screened endophytic and epiphytic bacteria associated with ethnomedicinal plants for the presence of the non-ribosomal peptide synthetase (NRPS) gene and identified horizontal gene transfer (HGT) of the NRPS gene between the bacterial species. NRPSs are large multimodular enzymes that synthesize...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-015-0910-y
更新日期:2016-01-01 00:00:00
abstract::All major insecticidal genes of Bacillus thuringiensis var. israelensis (Bti) are controlled by the sporulation-specific sigma factor Sigma E (sigE), while sigE is negatively regulated by Sigma K (sigK). Therefore, knocking out sigK plays an important role in regulating the expression of insecticidal genes in Bti. A s...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-020-02150-9
更新日期:2020-11-01 00:00:00
abstract::This article outlines a comprehensive analysis of the microbial diversity of aerosols produced during screening in a green waste composting plant using both culture and molecular techniques. Bacteria, thermophilic actinomycetes and fungi were quantified in the aerosols. The structure of the microbial community was exa...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-009-9438-3
更新日期:2009-09-01 00:00:00
abstract::The laccase gene lacD, cloned from a novel laccase-producing basidiomycete Trametes sp. 420, contained 2,052 base pairs (bp) interrupted by 8 introns. lacD displayed a relatively high homology with laccase genes from other white rot fungi, whereas the homology between lacD and laccase genes from plants, insects, or ba...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-006-0068-8
更新日期:2007-04-01 00:00:00
abstract::We undertook the issue of the distribution of intracellular bacteria among Oribatida (Acari). Six genera of bacteria were detected by PCR and Sanger DNA sequencing: Wolbachia, Cardinium, Rickettsia, Spiroplasma, Arsenophonus, and Hamiltonella. Our research, for the first time, revealed the presence of Cardinium in Mic...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-019-01717-5
更新日期:2019-09-01 00:00:00
abstract::Oxylipin metabolism represents one of the important hormonal and defensive mechanisms employed by plants, algae, or animals. It begins mostly with the reaction of lipoxygenases (LOXs), which catalyze the oxygenation of polyunsaturated fatty acids to form the corresponding hydroperoxides. At present, little information...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-006-0512-9
更新日期:2007-04-01 00:00:00
abstract::A Gram-stain-negative, non-motile and coccoid, ovoid or rod-shaped bacterial strain, OITF-57T, which was isolated from a tidal flat sediment in South Korea, was characterized taxonomically. Strain OITF-57T grew optimally at 25 °C, at pH 7.0-8.0 and in the presence of 2.0% (w/v) NaCl. Strain OITF-57T exhibited the high...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-018-1553-6
更新日期:2018-11-01 00:00:00
abstract::Two strains of a novel basidiomycetous yeast species were isolated from the gut of wood-boring larvae collected in the Baotianman Nature Reserve, the central China. Sequence analysis of the D1/D2 domains of the large subunit (LSU) rRNA gene and internal transcribed spacer (ITS) regions showed that these yeasts belong ...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-012-0203-7
更新日期:2012-11-01 00:00:00
abstract::We studied the usefulness of flow cytometry for detection of penicillin resistance in E. faecalis and S. aureus by direct binding of commercially available fluorescent penicillin, Bocillin FL, to cells obtained from culture. There were significantly lower percentages of fluorescent cells and median and mean fluorescen...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-008-9179-8
更新日期:2008-08-01 00:00:00
abstract::Candida galli strain PGO6 isolated from oil-contaminated water is the first isolated yeast strain which is capable to form vanillin and vanillic acid during isoeugenol biotransformation. The products were confirmed by thin-layer chromatography (TLC), changes in the UV absorption pattern and high-performance liquid chr...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-010-9815-y
更新日期:2011-03-01 00:00:00