Two novel duck antibacterial peptides, avian beta-defensins 9 and 10, with antimicrobial activity.

abstract：:In this study, a method of heat adaptation was implemented in an attempt to increase the upper thermal threshold of two Streptococcus thermophilus found in South Korea and identified the alterations in membrane fatty acid composition to adaptive response to heat. In order to develop heat tolerant lactic acid bacteria,...

journal_title：Journal of microbiology and biotechnology

authors： Min B,Kim K,Li V,Cho S,Kim H

更新日期：2020-05-28 00:00:00

abstract：:Outbreaks of staphylococcal food poisoning (SFP) causing serious human diseases and economic losses have been reported globally. Furthermore, the spread of Staphylococcus aureus with increased resistance to multiple antimicrobial agents has become a major concern in the food industries and medicine. Here, we isolated ...

journal_title：Journal of microbiology and biotechnology

authors： Yu JH,Lim JA,Chang HJ,Park JH

更新日期：2019-12-28 00:00:00

abstract：:The symbiotic nature of the relationship between algae and marine bacteria is well-studied among the complex microbial interactions. The mutual profit between algae and bacteria occurs via nutrient and vitamin exchange. It is necessary to analyze the genome sequence of a bacterium to predict its symbiotic relationship...

journal_title：Journal of microbiology and biotechnology

authors： Cho SH,Lee E,Ko SR,Jin S,Song Y,Ahn CY,Oh HM,Cho BK,Cho S

更新日期：2020-04-28 00:00:00

abstract：:Optimal conditions for a high cell density fermentation were investigated in a recombinant Escherichia coli producing salmosin, a platelet aggregation inhibitor. The optimized carbon and nitrogen sources were glycerol 10 g/l, yeast extract 30 g/l, and bacto-tryptone 10 g/l, yielding the dry cell weight (DCW) of 10.61 ...

journal_title：Journal of microbiology and biotechnology

authors： Seo MJ,Choi HJ,Chung KH,Pyun YR

更新日期：2011-10-01 00:00:00

abstract：:Ralstonia solanacearum causes bacterial wilt in a wide variety of host plant species and produces a melanin-like blackish-brown pigment in stationary phase when grown in minimal medium supplemented with tyrosine. To study melanin production regulation in R. solanacearum, five mutants exhibiting overproduction of melan...

journal_title：Journal of microbiology and biotechnology

authors： Ahmad S,Lee SY,Khan R,Kong HG,Son GJ,Roy N,Choi K,Lee SW

更新日期：2017-09-28 00:00:00

abstract：:In order to establish an axenic (bacteria-free) culture of Microcystis aeruginosa NIER 10039 isolated from a Korean reservoir, the culture was subjected to sequential treatment, including ultrasonication, washing, and addition of antibiotics. Three broad-spectrum antibiotics, namely, kanamycin, ampicillin, and imipene...

journal_title：Journal of microbiology and biotechnology

authors： Han AW,Oh KH,Jheong WH,Cho YC

更新日期：2010-07-01 00:00:00

abstract：:The abundance, biomass, size distribution, and taxonomic composition of bacterial and protistan (heterotrophic and autotrophic nanoflagellates and ciliates) communities were investigated in six lakes of Masurian Lake District (north-eastern Poland) differing in trophic state. Samples were taken from the trophogenic wa...

journal_title：Journal of microbiology and biotechnology

authors： Ryszard CJ,Tomasz A,Kalinowska K,Skowronska A

更新日期：2009-09-01 00:00:00

abstract：:Heat-resistant microbial hosts are required for bioprocess development using high cell density cultivations at the industrial scale. We report that the thermotolerance of Escherichia coli can be enhanced by overexpressing ybeD, which was known to encode a hypothetical protein of unknown function. In the wild-type E. c...

journal_title：Journal of microbiology and biotechnology

authors： Kim S,Kim Y,Yoon SH

更新日期：2019-03-28 00:00:00

abstract：:Bioethanol production from lignocellulose is considered as a sustainable biofuel supply. However, the low cellulose hydrolysis efficiency limits the cellulosic ethanol production. The cellulase is strongly inhibited by the major end product cellobiose, which can be relieved by the addition of β-glucosidase. In this st...

journal_title：Journal of microbiology and biotechnology

authors： Tang H,Hou J,Shen Y,Xu L,Yang H,Fang X,Bao X

更新日期：2013-11-28 00:00:00

abstract：:Helicobacter pylori increased the gamma-glutamyltranspeptidase (GGT) production under low-pH (maximal at pH 4) and appropriate pCO2 conditions, while the production of GGT mRNA correlated with increased total enzyme activity. At pH 4, the bacterium augmented enzyme production in the presence of glutamine (~10 mM) in t...

journal_title：Journal of microbiology and biotechnology

authors： Ki MR,Yun NR,Hwang SY

更新日期：2013-04-01 00:00:00

abstract：:Poly-gamma-glutamic acid (γ-PGA) is a natural polymer that is synthesized by Bacillus species and has been reported to have antitumor activity. The aim of this study was to investigate the effect of γ-PGA on the treatment of vaginal intraepithelial neoplasia (VAIN). A retrospective observational study on γ-PGA therapy...

journal_title：Journal of microbiology and biotechnology

authors： Koo YJ,Min KJ,Hong JH,Lee JK

更新日期：2015-07-01 00:00:00

abstract：:Rhodococcus sp. JDC-11, capable of utilizing di-n-butyl phthalate (DBP) as the sole source of carbon and energy, was isolated from sewage sludge and confirmed mainly based on 16S rRNA gene sequence analysis. The optimum pH, temperature, and agitation rate for DBP degradation by Rhodococcus sp. JDC-11 was 8.0, 30 degre...

journal_title：Journal of microbiology and biotechnology

authors： Jin DC,Liang RX,Dai QY,Zhang RY,Wu XL,Chao WL

更新日期：2010-10-01 00:00:00

abstract：:Cryptomonads are unicellular, biflagellate algae. Generally, cryptomonad cells cannot be preserved well because of their fragile nature, and an improved methodology should be developed to identify cryptomonads from natural habitats. In this study, we tried using several cytological fixatives, including glutaraldehyde,...

journal_title：Journal of microbiology and biotechnology

authors： Xia S,Cheng Y,Zhu H,Liu G,Hu Z

更新日期：2013-03-01 00:00:00

abstract：:Pseudomonas putida JM 37 metabolized glyoxylate at a specific rate of 55 g/g dry biomass/day. In order to investigate their role, three genes encoding enzymes that potentially convert glyoxylate were disrupted, namely tartronate semialdehyde synthase (gcl), malate synthase (glcB) and isocitrate lyase (aceA). Strains w...

journal_title：Journal of microbiology and biotechnology

authors： Li XZ,Klebensberger J,Rosche B

更新日期：2010-06-01 00:00:00

abstract：:Infections by herpes simplex viruses have an immense impact on humans, ranging from selflimiting, benign illness to serious, life-threatening diseases. While nucleoside analog drugs are available, resistance has been increasing and currently no vaccine exists. Ginsenosides derived from Panax ginseng have been document...

journal_title：Journal of microbiology and biotechnology

authors： Wright S,Altman E

更新日期：2020-01-28 00:00:00

abstract：:The hepatitis C virus (HCV) RNA genome is replicated by an RNA replicase complex (RC) consisting of cellular proteins and viral nonstructural (NS) proteins, including NS5B, an RNAdependent RNA polymerase (RdRp) and key enzyme for viral RNA genome replication. The HCV RC is known to be associated with an intracellular ...

journal_title：Journal of microbiology and biotechnology

authors： Kim JH,Rhee JK,Ahn DG,Kim KP,Oh JW

更新日期：2014-12-28 00:00:00

abstract：:Several species of Gram-positive bacteria have cell wall peptidoglycan (syn. murein) in which not all of the sugar moieties are N-acetylated. This has recently been shown to be a secondary effect, caused by the action of a peptidoglycan N-acetylglucosamine deacetylase. We have found that the opportunistic pathogen Lis...

journal_title：Journal of microbiology and biotechnology

authors： Popowska M,Kusio M,Szymanska P,Markiewicz Z

更新日期：2009-09-01 00:00:00

abstract：:Nitrospira is a dominant member of nitrite-oxidizing bacteria (NOB) in nitrifying bioreactors as well as in natural habitats. In this study, Nitrospira NOB were investigated in the two nitrifying reactors operated with high and low dissolved oxygen (DO) concentrations for a period of 300 days. Phylogenetic and termina...

journal_title：Journal of microbiology and biotechnology

authors： Park HD,Noguera DR

更新日期：2008-08-01 00:00:00

abstract：:Pseudomonas aeruginosa is an opportunistic human pathogen that produces and secretes exopolysaccharides (EPS), in which cells are embedded to form a highly organized community structure called biofilm. Here, we characterized the role of cyclic diguanylate (c-di-GMP) and EPS (PEL) overproduction in the wspF mutant phen...

journal_title：Journal of microbiology and biotechnology

authors： Chung IY,Choi KB,Heo YJ,Cho YH

更新日期：2008-07-01 00:00:00

abstract：:The fungal strain EML-DML3PNa1 isolated from leaf of white dogwood (Cornus alba L.) showed strong nematicidal activity with juvenile mortality of 87.6% at a concentration of 20% fermentation broth filtrate at 3 days after treatment. The active fungal strain was identified as Aspergillus oryzae, which belongs to sectio...

journal_title：Journal of microbiology and biotechnology

authors： Kim TY,Jang JY,Jeon SJ,Lee HW,Bae CH,Yeo JH,Lee HB,Kim IS,Park HW,Kim JC

更新日期：2016-08-28 00:00:00

abstract：:Cellulase and xylanase are main hydrolysis enzymes for the degradation of cellulosic and hemicellulosic biomass, respectively. In this study, our aim was to develop and test the efficacy of a rapid, high-throughput method to screen hydrolytic-enzyme-producing microbes. To accomplish this, we modified the 3,5-dinitrosa...

journal_title：Journal of microbiology and biotechnology

authors： Kim JJ,Kwon YK,Kim JH,Heo SJ,Lee Y,Lee SJ,Shim WB,Jung WK,Hyun JH,Kwon KK,Kang DH,Oh C

更新日期：2014-11-28 00:00:00

abstract：:We isolated and functionally characterized the α- and β- subunits (ApCpnA and ApCpnB) of a chaperonin from Aeropyrum pernix K1. The constructed vectors pET3d- ApCpnA and pET21a-ApCpnB were transformed into E. coli Rosetta (DE3), BL21 (DE3), or CodonPlus (DE3) cells. The expression of ApCpnA (60.7 kDa) and ApCpnB (61.2...

journal_title：Journal of microbiology and biotechnology

authors： Lee JW,Kim SW,Kim JH,Jeon SJ,Kwon HJ,Kim BW,Nam SW

更新日期：2013-06-28 00:00:00

abstract：:A denitrifying polyphosphate-accumulating bacterium (YKP-9) was isolated from activated sludge of a 5-stage biological nutrient removal process with step feed system. This organism was a Gram-negative, coccus-shaped, facultative aerobic chemoorganotroph. It had a respiratory type of metabolism with oxygen, nitrate, an...

journal_title：Journal of microbiology and biotechnology

authors： Lee HW,Park YK

更新日期：2008-12-01 00:00:00

abstract：:Citrobacter sp. is a cause of significant opportunistic nosocomial infection and is frequently found in human and animal feces, soil, and sewage water, and even in industrial waste or putrefaction. Biofilm formation is an important virulence trait of Citrobacter sp. pathogens but the process and characteristics of thi...

journal_title：Journal of microbiology and biotechnology

authors： Zhou G,Li LJ,Shi QS,Ouyang YS,Chen YB,Hu WF

更新日期：2013-12-01 00:00:00

abstract：:Platelet-activating factor receptor (PAFR) plays an important role in bacterial infection and inflammation. We examined the effect of the bacterial cell wall components lipopolysaccharide (LPS) and lipoteichoic acid (LTA) from Lactobacillus plantarum (pLTA) and Staphylococcus aureus (aLTA) on PAFR expression in THP-1,...

journal_title：Journal of microbiology and biotechnology

authors： Kim H,Jung BJ,Jeong J,Chun H,Chung DK

更新日期：2014-08-01 00:00:00

abstract：:This report provides the complete nucleotide sequences of the full-length cDNA encoding squalene synthase (SQS) and its genomic DNA sequence from a triterpene-producing fungus, Ganoderma lucidum. The cDNA of the squalene synthase (SQS) (GenBank Accession Number: DQ494674) was found to contain an open reading frame (OR...

journal_title：Journal of microbiology and biotechnology

authors： Zhao MW,Liang WQ,Zhang DB,Wang N,Wang CG,Pan YJ

更新日期：2007-07-01 00:00:00

abstract：:The thermophile Bacillus fordii MH602 was screened for stereospecifically hydrolyzing DL-5-substituted hydantoins to L-alpha-amino acids. Since the reaction at higher temperature, the advantageous for enhancement of substrate solubility and for racemization of DL-5-substituted hydantoins during the conversion were ach...

journal_title：Journal of microbiology and biotechnology

authors： Mei YZ,Wan YM,He BF,Ying HJ,Ouyang PK

更新日期：2009-12-01 00:00:00

abstract：:Four series (S, M, R, and W) of Alternaria longipes isolates were obtained based on consecutive induction with Dimethachlon (Dim) and ultraviolet irradiation. These isolates were then characterized according to their tolerance to Dim, sensitivity to osmotic stress, and phenotypic properties. All the induced Dim-resist...

journal_title：Journal of microbiology and biotechnology

authors： Luo Y,Yang J,Zhu M,Yan J,Mo M,Zhqng K

更新日期：2008-01-01 00:00:00

abstract：:PineXol, extracted from Korean red pine bark, has beneficial effects, such as antioxidant, antiinflammatory, and antilipogenic activities in vitro. We tested the hypothesis that PineXol supplementation could have anti-obesity effects on mice fed a high-fat diet (HFD). Four-week-old male C57BL/6 mice were fed normal ch...

journal_title：Journal of microbiology and biotechnology

authors： Ahn H,Go GW

更新日期：2017-04-28 00:00:00

abstract：:Piliated Lactobacillus rhamnosus (pLR) strains possess higher adherent capacity than non-piliated strains. The objective of this study was to isolate and characterize probiotic pLR strains in human fecal samples. To this end, mouse polyclonal antiserum (anti-SpaA) against the recombinant pilus protein (SpaA) of L. rha...

journal_title：Journal of microbiology and biotechnology

authors： Yang ZQ,Xue Y,Rao SQ,Zhang M,Gao L,Yin YQ,Chen DW,Zhou XH,Jiao XA

更新日期：2017-11-28 00:00:00