journal
MENU ▼
Read by QxMD icon Read
search

Journal of General and Applied Microbiology

journal
https://www.readbyqxmd.com/read/29367493/substrate-specificity-of-nudix-hydrolases-from-myxococcus-xanthus
#1
Yoshio Kimura, Yuuka Yamamoto, Sayaka Kajimoto, Ai Sakai, Kaoru Takegawa
No abstract text is available yet for this article.
January 25, 2018: Journal of General and Applied Microbiology
https://www.readbyqxmd.com/read/29367492/mumiamicin-structure-and-bioactivity-of-a-new-furan-fatty-acid-from-mumia-sp-ysp-2-79
#2
Tōru Kimura, Ayano Tajima, Yuki Inahashi, Masato Iwatsuki, Hiroaki Kasai, Takayuki Mokudai, Yoshimi Niwano, Kazuro Shiomi, Yōko Takahashi, Satoshi Ōmura, Takuji Nakashima
A new antibiotic, designated mumiamicin, was isolated from the cultured broth of the rare actinomycete strain, Mumia sp. YSP-2-79, by Diaion HP-20, silica gel and ODS column chromatography, followed by HPLC purification. The chemical structure of mumiamicin was elucidated as a new furan fatty acid by nuclear magnetic resonance and mass spectrometry. Mumiamicin showed antimicrobial activity and antioxidative activity.
January 25, 2018: Journal of General and Applied Microbiology
https://www.readbyqxmd.com/read/29367491/inhibitory-effect-of-lactococcus-lactis-on-the-bioactivity-of-periodontopathogens
#3
Hyun-Seung Shin, Dong-Heon Baek, Sung-Hoon Lee
Lactococcus lactis is a probiotic bacterium that produces various bacteriocins. Periodontopathogens induce inflammation and halitosis through the actions of lipopolysaccharide (LPS) and trypsin-like enzymes. The purpose of this study was to investigate the inhibitory effects of L. lactis on the bioactivity of periodontopathogens. To investigate the antimicrobial peptide of L. lactis, the spent culture medium (SCM) of L. lactis was treated with or without proteinase K after collection by centrifugation, and the antibacterial activity of SCM against periodontopathogens was assessed...
January 25, 2018: Journal of General and Applied Microbiology
https://www.readbyqxmd.com/read/29311498/cyanide-degrading-nitrilases-in-nature
#4
Michael J Benedik, B Trevor Sewell
No abstract text is available yet for this article.
December 30, 2017: Journal of General and Applied Microbiology
https://www.readbyqxmd.com/read/29311497/the-effects-of-abscisic-acid-salicylic-acid-and-jasmonic-acid-on-lipid-accumulation-in-two-freshwater-chlorella-strains
#5
Guanxun Wu, Zhengquan Gao, Huanmin Du, Bin Lin, Yuchen Yan, Guoqiang Li, Yanyun Guo, Shenggui Fu, Gongxiang Wei, Miaomiao Wang, Meng Cui, Chunxiao Meng
Sustainable renewable energy is being hotly debated globally because the continued use of finite fossil fuels is now widely recognized as being unsustainable. Microalgae potentially offer great opportunities for resolving this challenge. Abscisic acid (ABA), jasmonic acid (JA) and salicylic acid (SA) are involved in regulating many physiological properties and have been widely used in higher plants. To test if phytohormones have an impact on accumulating lipid for microalgae, ABA, JA and SA were used to induce two Chlorella strains in the present study...
December 30, 2017: Journal of General and Applied Microbiology
https://www.readbyqxmd.com/read/29311496/identification-of-essential-biosynthetic-genes-and-a-true-biosynthetic-product-for-thioviridamide
#6
Masumi Izawa, Shota Nagamine, Haruna Aoki, Yoichi Hayakawa
No abstract text is available yet for this article.
December 30, 2017: Journal of General and Applied Microbiology
https://www.readbyqxmd.com/read/29225287/lysogenisation-of-shiga-toxin-encoding-bacteriophage-represses-cell-motility
#7
Shoichi Mitsunaka, Naoki Sudo, Yasuhiko Sekine
Bacteriophages are genetic elements that play key roles in the evolution and diversification of bacterial genomes. The Shiga toxin (Stx)-encoding phage plays an important role in the horizontal transfer of the stx gene. However, the influence of the Stx phage integration on the physiological properties and gene expression pattern of the host have not been clearly resolved. In this study, we constructed the Sp5 lysogen through lysogenisation of E. coli K-12 by Sp5, an Stx2 phage in enterohaemorrhagic E. coli (EHEC) O157:H7 Sakai, and examined the effect of the resulting lysogen on cell motility under various growth conditions...
December 8, 2017: Journal of General and Applied Microbiology
https://www.readbyqxmd.com/read/29225286/j-gen-appl-microbiol-62-266-271-2016-doi-10-2323-jgam-2016-04-001
#8
(no author information available yet)
No abstract text is available yet for this article.
December 8, 2017: Journal of General and Applied Microbiology
https://www.readbyqxmd.com/read/29225285/evaluation-of-probiotic-and-prebiotic-like-effects-of-bacillus-subtilis-bn-on-growth-of-lactobacilli
#9
Masanori Horie, Taisuke Koike, Sakiko Sugino, Aya Umeno, Yasukazu Yoshida
The aim of this study was to determine the probiotic and the prebiotic-like properties of Bacillus subtilis BN, a spore-forming bacterium, also known as "natto-kin", which is used for making the Japanese fermented food, natto. We used the spores and vegetative cells of this strain and compared their effects on the growth of lactobacilli. Culture supernatant from B. subtilis BN was added to a glucose-free MRS medium used to culture lactobacilli. When lactobacilli were cultured in the supernatant-containing medium, growth was improved...
December 8, 2017: Journal of General and Applied Microbiology
https://www.readbyqxmd.com/read/29225284/characterization-of-extracellular-matrix-components-from-the-desiccation-tolerant-cyanobacterium-nostoc-commune
#10
Kaori Inoue-Sakamoto, Yasunori Tanji, Minami Yamaba, Takumi Natsume, Takuya Masaura, Tomoya Asano, Takumi Nishiuchi, Toshio Sakamoto
The terrestrial cyanobacterium Nostoc commune forms macroscopic colonies in its natural habitats, and these colonies consist of both cellular filaments and massive extracellular matrixes. In this study, the biochemical features of the extracellular matrix components were investigated. Naturally growing N. commune was tolerant to desiccation, and produced massive extracellular polysaccharides that contained both neutral sugars and glucuronic acid as constituent monosaccharides. The extracellular polysaccharide contents and desiccation tolerance were compared in laboratory culture strains of Nostoc species...
December 8, 2017: Journal of General and Applied Microbiology
https://www.readbyqxmd.com/read/29225283/gene-cloning-and-expression-of-fungal-lignocellulolytic-enzymes-from-the-rumen-of-gayal-bos-frontalis
#11
Jing Leng, Xuchuan Liu, Chunyong Zhang, Renjun Zhu, Huaming Mao
A total of 6,219 positive clones were obtained by constructing a BAC library of uncultured ruminal fungi of gayal, and two clones (xynF1 and eglF2) with lignocellulolytic enzyme activity were selected. The sequencing results showed that xynF1 and eglF2 had 903-bp, and 1,995-bp, open reading frames likely to encode β-xylanase (XynF1) and β-glucosidase (EglF2), respectively. The amino acid sequence of XynF1 had 99% coverage and 95% homology to the endo-β-1,4-xylanase encoded by the cellulase gene of Orpinomyces sp...
December 8, 2017: Journal of General and Applied Microbiology
https://www.readbyqxmd.com/read/29187682/bacterial-glycerol-oxidation-coupled-to-sulfate-reduction-at-neutral-and-acidic-ph
#12
Sidnei C Santos, Martin G Liebensteiner, Antonie H van Gelder, Mauricio R Dimitrov, Paulo F Almeida, Cristina M Quintella, Alfons J M Stams, Irene Sánchez-Andrea
Glycerol is a main co-product of biodiesel production. Crude glycerol may serve as a cheap and attractive substrate in biotechnological applications, e.g. for the production of valuable chemicals or as an electron donor for reduction processes. In this work, sulfate reduction with glycerol was studied at neutral and acidic pH using bioreactor sludge samples and Tinto River sediments as a source of inoculum, respectively. Communities of sulfate-reducing bacteria (SRB) and fermentative bacteria were co-enriched at both pH values...
November 29, 2017: Journal of General and Applied Microbiology
https://www.readbyqxmd.com/read/29187681/identification-of-ybha-as-the-pyridoxal-5-phosphate-plp-phosphatase-in-escherichia-coli-importance-of-plp-homeostasis-on-the-bacterial-growth
#13
Ryota Sugimoto, Natsumi Saito, Tomohiro Shimada, Kan Tanaka
The gene ybhA of Escherichia coli encodes a phosphatase that has an in vitro specificity to dephosphorylate pyridoxal 5'-phosphate (PLP or vitamin B6), a co-factor for aminotransferases and other enzymes. In this study, we found that excess pyridoxal (PL) in a minimal medium resulted in excess PLP in vivo and growth inhibition, which was alleviated by YbhA overproduction. Conversely, the YbhA overproduction resulted in PLP shortage in vivo and the correlated reduction in growth rate, which was significantly negated by PL in the medium...
November 29, 2017: Journal of General and Applied Microbiology
https://www.readbyqxmd.com/read/29187680/purification-and-characterization-of-a-novel-%C3%AE-d-glucosidase-from-lactobacillus-fermentum-with-unique-substrate-specificity-towards-resistant-starch
#14
Mousami Shankar Addala, Muralikrishna Gudipati
Resistant starch is not digestible in the small intestine and is fermented by lactic acid bacteria in the large intestine into short chain fatty acids, such as acetate, propionate and butyrate, which result in several health benefits in analogy with dietary fibre components. The mode and mechanism of resistant starch degradation by lactic acid bacteria is still not understood. In the present study, we have purified α-D-glucosidase from Lactobacillus fermentum NCDC 156 by employing three sequential steps i...
November 29, 2017: Journal of General and Applied Microbiology
https://www.readbyqxmd.com/read/29142164/bacterial-degradation-of-spermine-and-expression-of-spermidine-spermine-acetyltransferase-in-bacillus-subtilis-natto-under-liquid-cultivation
#15
Kazuya Kobayashi, Yuji Kubo, Yuichiro Horii, Toshikazu Nishiwaki, Shin Kamiyama, Hideyuki Sone, Satoshi Watanabe
No abstract text is available yet for this article.
November 15, 2017: Journal of General and Applied Microbiology
https://www.readbyqxmd.com/read/29142163/strain-improvement-studies-on-microbacterium-foliorum-ga2-for-production-of-%C3%AE-amylase-in-solid-state-fermentation-biochemical-characteristics-and-wash-performance-analysis-at-low-temperatures
#16
Roohi, Mohammed Kuddus
Microbacterium foliorum GA2, an alkali-tolerant bacterium, was randomly mutated using UV radiation and sodium azide to obtain a mutant with a higher cold-active extracellular amylolytic activity. A mutant, designated as MFSD20, was selected owing to its higher amylase activity at 20°C. Under optimized conditions, amylase production was achieved best with raw banana peels (5000 units) in solid-state fermentation (SSF). The enzyme was purified by salt precipitation and chromatographic methods and afterwards characterized biochemically...
November 15, 2017: Journal of General and Applied Microbiology
https://www.readbyqxmd.com/read/29142162/chloroform-extract-of-turmeric-inhibits-biofilm-formation-eps-production-and-motility-in-antibiotic-resistant-bacteria
#17
Sumreen Hayat, Anjum N Sabri, Timothy D McHugh
In the form of biofilms, bacteria exhibit more resistance to antibiotics. Biofilm formers can withstand severe conditions and the host's defense system. Therefore, it is necessary to search for effective biofilm inhibitors. In this study, we investigated the effect of a chloroform extract of turmeric on biofilm formation against antibiotic resistant bacteria. The extract exhibited its antibiofilm effect by altering adherence, motility, extracellular polymeric substance (EPS) production and cell surface hydrophobicity; important attributes of biofilm formation...
November 15, 2017: Journal of General and Applied Microbiology
https://www.readbyqxmd.com/read/29046501/characterization-of-amylolytic-enzyme-overproducing-mutant-of-aspergillus-luchuensis-obtained-by-ion-beam-mutagenesis
#18
Toshihiro Kojo, Chihiro Kadooka, Marisa Komohara, Shiori Onitsuka, Miya Tanimura, Yukiko Muroi, Shugo Kurazono, Yohei Shiraishi, Ken Oda, Kazuhiro Iwashita, Masahira Onoue, Kayu Okutsu, Yumiko Yoshizaki, Kazunori Takamine, Taiki Futagami, Kazuki Mori, Hisanori Tamaki
Aspergillus luchuensis is a kuro (black) koji fungus that has been used as a starch degrader for the awamori- and shochu-making industries in Japan. In this study, we investigated the effect of ion beam irradiation on A. luchuensis RIB2601 and obtained a high starch-degrading mutant strain U1. Strain U1 showed reduced growth rate, whereas it showed higher α-amylase, glucoamylase, and α-glucosidase activities on a mycelial mass basis than the wild type (wt) strain both on agar plates and in rice koji. In addition, strain U1 showed higher N-acetylglucosamine content in the cell wall and higher sensitivity to calcofluor white, suggesting a deficiency in cell wall composition...
October 17, 2017: Journal of General and Applied Microbiology
https://www.readbyqxmd.com/read/29046500/comparative-genomics-of-tetragenococcus-halophilus
#19
Ikuko Nishimura, Yuh Shiwa, Atsushi Sato, Tetsuya Oguma, Hirofumi Yoshikawa, Yasuji Koyama
No abstract text is available yet for this article.
October 17, 2017: Journal of General and Applied Microbiology
https://www.readbyqxmd.com/read/28954966/construction-of-a-rapamycin-susceptible-strain-of-the-unicellular-red-alga-cyanidioschyzon-merolae-for-analysis-of-the-target-of-rapamycin-tor-function
#20
Sousuke Imamura, Keiko Taki, Kan Tanaka
No abstract text is available yet for this article.
September 26, 2017: Journal of General and Applied Microbiology
journal
journal
22022
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"