Abstract:
:One solution to the global crisis of antibiotic resistance is the discovery of novel antimicrobial compounds for clinical application. Marine organisms are an attractive and, as yet, relatively untapped resource of new natural products. Cell extracts from the marine diatom, Phaeodactylum tricornutum, have antibacterial activity and the fatty acid, eicosapentaenoic acid (EPA), has been identified as one compound responsible for this activity. During the isolation of EPA, it became apparent that the extracts contained further antibacterial compounds. The present study was undertaken to isolate these additional antibacterial factors using silica column chromatography and reverse-phase high-performance liquid chromatography. Two antibacterial fractions, each containing a pure compound, were isolated and their chemical structures were investigated by mass spectrometry and nuclear magnetic resonance spectroscopy. The antibacterial compounds were identified as the monounsaturated fatty acid (9Z)-hexadecenoic acid (palmitoleic acid; C16:1 n-7) and the relatively unusual polyunsaturated fatty acid (6Z, 9Z, 12Z)-hexadecatrienoic acid (HTA; C16:3 n-4). Both are active against Gram-positive bacteria with HTA further inhibitory to the growth of the Gram-negative marine pathogen, Listonella anguillarum. Palmitoleic acid is active at micro-molar concentrations, kills bacteria rapidly, and is highly active against multidrug-resistant Staphylococcus aureus. These free fatty acids warrant further investigation as a new potential therapy for drug-resistant infections.
journal_name
Appl Microbiol Biotechnoljournal_title
Applied microbiology and biotechnologyauthors
Desbois AP,Lebl T,Yan L,Smith VJdoi
10.1007/s00253-008-1714-9subject
Has Abstractpub_date
2008-12-01 00:00:00pages
755-64issue
4eissn
0175-7598issn
1432-0614journal_volume
81pub_type
杂志文章abstract::Enterobacter sp. strain FL was newly isolated from activated sludge and exhibited significant capability of auto-aggregation as well as aerobic denitrification. The removal efficiencies of NO3--N, total nitrogen (TN), and TOC by strain FL in batch culture reached 94.6, 63.9, and 72.5% in 24 h, respectively. The produc...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-017-8720-8
更新日期:2018-02-01 00:00:00
abstract::The production of human gamma interferon as intracellular inclusion bodies in Escherichia coli, which simplified the purification process, is described. An expression plasmid carrying lipoprotein and the tryptophane promoters in tandem was used. Preparation of highly pure interferon was achieved using high resolution ...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/BF00176659
更新日期:1990-07-01 00:00:00
abstract::Deoxynucleoside-5'-monophosphates (5'-dNMPs) are the basic components of DNA and are widely used in medicine and as chemical and biochemical reagents. A large amount of effort has been expended to obtain 5'-dNMPs of high quality and at a low cost. However, these procedures are inefficient and inconvenient. In this stu...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-013-5173-6
更新日期:2013-11-01 00:00:00
abstract::Reduction and biodegradation mechanisms of naphthylaminesulfonic azo dye amaranth using a newly isolated Shewanella decolorationis strain S12 were investigated. Under anaerobic conditions, amaranth was reduced by strain S12, and a stoichiometric amount of two reduction products RP-1 and RP-2 were generated. UV/visible...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-007-0838-7
更新日期:2007-06-01 00:00:00
abstract::The adhesion properties of 14 Streptococcus salivarius strains to mucus (HT29-MTX) and non-mucus secreting (Caco-2/TC7) human intestinal epithelial cells were investigated. Ability to adhere to these two eukaryotic cell lines greatly differs between strains. The presence of mucus played a major factor in adhesion, lik...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-018-8794-y
更新日期:2018-03-01 00:00:00
abstract::Xylose is, after glucose, the dominant sugar in agricultural wastes. In anaerobic environments, carbohydrates are converted into volatile fatty acids and alcohols. These can be used as building blocks in biotechnological or chemical processes, e.g., to produce bioplastics. In this study, xylose fermentation by mixed m...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-008-1749-y
更新日期:2009-02-01 00:00:00
abstract::Pyruvate carboxylase is an important anaplerotic enzyme replenishing oxaloacetate consumed for biosynthesis during growth, or lysine and glutamic acid production in industrial fermentations. We used regions of homology from pyruvate carboxylase sequences of 12 different species (corresponding to the ATP- and pyruvate-...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s002530051302
更新日期:1998-09-01 00:00:00
abstract::Phytases are important industrial enzymes able to catalyze the release of up to six phosphates from phytate in a stepwise hydrolysis reaction. Phytases are almost exclusively used as a feed supplement. However, phytases are also used in human nutrition, food processing, non-food industrial products, and emerging appli...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章,评审
doi:10.1007/s00253-019-09962-1
更新日期:2019-08-01 00:00:00
abstract::Sulfate (SO42-) is an often-utilized and well-understood inorganic sulfur source in microorganism culture. Recently, another inorganic sulfur source, thiosulfate (S2O32-), was proposed to be more advantageous in microbial growth and biotechnological applications. Although its assimilation pathway is known to depend on...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-017-8420-4
更新日期:2017-09-01 00:00:00
abstract::Ribonuclease production using immobilized cells (IC) of Aspergillus clavatus has been studied under batch, repeated-batch and continuous fermentation conditions in a bubble-column bioreactor and compared with production by free cells. Immobilization was achieved by the method of cryostructurization in polyvinyl alcoho...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/BF00174199
更新日期:1992-04-01 00:00:00
abstract::Enantioselective oxidation of racemic phenyl-1,2-ethanediol into (R)-(-)-mandelic acid by a newly isolated Brevibacterium lutescens CCZU12-1 was demonstrated. It was found that optically active (R)-(-)-mandelic acid (e.e.p > 99.9 %) is produced leaving the other enantiomer (S)-(+)-phenyl-1,2-ethanediol intact. Using f...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-013-4989-4
更新日期:2013-08-01 00:00:00
abstract::Mycelial adhesion affects cell growth and the production of water-soluble extracellular yellow pigment (EYP) in submerged fermentation with Monascus ruber CGMCC 10910. Two nitrates, NaNO3 and KNO3, were used as nitrogen sources for mitigating mycelial adhesion and improving the production of EYP in this study. The res...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-020-10944-x
更新日期:2020-11-01 00:00:00
abstract::The stereoselective kinetic biotransformation of thioridazine, a phenothiazine neuroleptic drug, by endophytic fungi was investigated. In general, the sulfur of lateral chain (position 2) or the sulfur of phenothiazinic ring (position 5) were oxidated yielding the major human metabolites thioridazine-2-sulfoxide and t...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-007-1171-x
更新日期:2007-12-01 00:00:00
abstract::Due to their high secretion capacity, Gram-positive bacteria from the genus Bacillus are important expression hosts for the high-yield production of enzymes in industrial biotechnology; however, to date, strains from only few Bacillus species are used for enzyme production at industrial scale. Herein, we introduce Pae...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-018-9369-7
更新日期:2018-12-01 00:00:00
abstract::Phenylpropanoids as abundant, lignin-derived compounds represent sustainable feedstocks for biotechnological production processes. We found that the biotechnologically important soil bacterium Corynebacterium glutamicum is able to grow on phenylpropanoids such as p-coumaric acid, ferulic acid, caffeic acid, and 3-(4-h...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-015-7165-1
更新日期:2016-02-01 00:00:00
abstract::The phylum Basidiomycota includes filamentous fungi and yeast species with different ecological and genomic characteristics. Transposable elements (TEs) are abundant components of most eukaryotic genomes, and their transition from being genomic parasites to key drivers of genomic architecture, functionality, and evolu...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章,评审
doi:10.1007/s00253-017-8097-8
更新日期:2017-02-01 00:00:00
abstract::To clarify the effect of type of foods on the intestinal environment, Far East Asian- (FEA; rich in rice starch, soy protein and soy oil) and Far East Asian marine- (FEAM; rich in rice starch, fish meal, fish oil and brown alga) modelled diets and sucrose, casein and beef tallow-rich (SCB) diet were prepared. After th...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-014-5535-8
更新日期:2014-05-01 00:00:00
abstract::Whey, the main by-product of the cheese industry, is considered as an important pollutant due to its high chemical and biological oxygen demand. Whey, often considered as waste, has high nutritional value and can be used to obtain value-added products, although some of them need expensive enzymatic synthesis. An econo...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章,评审
doi:10.1007/s00253-015-6766-z
更新日期:2015-08-01 00:00:00
abstract::Variable domains of heavy chains of camelid heavy-chain antibodies (VHHs) are known as nanobodies. Nanobodies are approximately 15 kDa in size with high affinity to their antigens. They can be easily manipulated and produced in microorganisms. In this study, an alpaca was immunized with purified green fluorescence pro...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-020-10535-w
更新日期:2020-06-01 00:00:00
abstract::We collected several biofilm samples from Japanese rivers and established a reproducible multi-species biofilm model that can be analyzed in laboratories. Bacterial abundance at the generic level was highly similar between the planktonic and biofilm communities, whereas comparative metatranscriptomic analysis revealed...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-016-7532-6
更新日期:2016-08-01 00:00:00
abstract::Mine water is an example of an extreme environment that contains a large number of diverse and specific bacteria. It is imperative to gain an understanding of these bacterial communities in order to develop effective strategies for the bioremediation of polluted aquatic systems. In this study, the high-throughput sequ...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-014-6213-6
更新日期:2015-04-01 00:00:00
abstract::Vanillin can be produced on a commercial scale by depolymerising renewable lignin. One product of microbial metabolism of vanillin by common soil microbes, such as Acinetobacter baylyi, is a tricarboxylic acid with a butadiene backbone known as 3-carboxy muconate (3CM). Three enzymes, 4-hydroxy benzaldehyde dehydrogen...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-010-3078-1
更新日期:2011-04-01 00:00:00
abstract::Chimeric virus-like particles (VLPs) were developed as a candidate for allergen-specific immunotherapy. In this study, hepatitis B core antigen (HBcAg) that genetically fused to Chenopodium album polcalcin (Che a 3)-derived peptide was expressed in E. coli BL21, purified, and VLP formation was evaluated using native a...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-020-11012-0
更新日期:2021-01-01 00:00:00
abstract::Glycosyltransferases (GTs)-mediated glycodiversification studies have drawn significant attention recently, with the goal of generating bioactive compounds with improved pharmacological properties by diversifying the appended sugars. The key to achieving glycodiversification is to identify natural and/or engineered fl...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-017-8256-y
更新日期:2017-07-01 00:00:00
abstract::Garlic oil can disrupt the quorum sensing (QS) pathways of the opportunistic pathogen Pseudomonas aeruginosa; however, the underlying mechanisms for this effect are unclear. Diallyl disulfide (DADS) is one of the most abundant sulfur-containing compounds in garlic oil. This study investigated the effects of DADS on th...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-018-9175-2
更新日期:2018-09-01 00:00:00
abstract::Carotenoids such as beta-carotene, lycopene, and antheraxanthin have plenty of scientific and commercial value. The comprehensive investigation of carotenoids drives people to improve and develop all kinds of analytical techniques to approach or even achieve "versatile" analysis. The metabolic engineering efforts in p...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章,评审
doi:10.1007/s00253-009-2069-6
更新日期:2009-07-01 00:00:00
abstract::In this study, we used the non-carotenogenic yeast Pichia pastoris X33 as a receptor for β-carotene-encoding genes, in order to obtain new recombinant strains capable of producing different carotenoidic compounds. We designed and constructed two plasmids, pGAPZA-EBI* and pGAPZA-EBI*L*, containing the genes encoding ly...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-011-3764-7
更新日期:2012-03-01 00:00:00
abstract::Quorum sensing gives rise to biofilm formation on the membrane surface, which in turn causes a loss of water permeability in membrane bioreactors (MBRs) for wastewater treatment. Enzymatic quorum quenching was reported to successfully inhibit the formation of biofilm in MBRs through the decomposition of signal molecul...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-012-4272-0
更新日期:2013-05-01 00:00:00
abstract::The environmental pollutant 4-sec-butylphenol (4-sec-BP) which possesses estrogenic properties was transformed by the aerobic Gram-positive bacteria Mycobacterium neoaurum and Nocardia cyriacigeorgica into three main products (P1-P3) which were isolated and structurally characterized in detail. Two of them were produc...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-013-5127-z
更新日期:2013-09-01 00:00:00
abstract::Artificial cold adaptation of a mesophilic protease, subtilisin BPN' was attempted by means of random mutagenesis of its entire gene coupled with screening of cleared-zone-forming colonies on skim-milk plates at a low temperature. Out of sixty clones screened at 10 degrees C, one mutant enzyme (termed M-15) was found ...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s002530050886
更新日期:1997-01-01 00:00:00