16,630 results match your criteria polar lipids


Devosia aurantiaca sp. nov., Isolated from Mountain Soil and Proposal of Albitalea gen. nov. to Replace the Illegitimate Prokaryotic Genus Name Geomonas Khan et al. 2020.

Curr Microbiol 2021 May 7. Epub 2021 May 7.

Department of Life Science, Chung-Ang University, 84, HeukSeok-Ro, Dongjak-Gu, Seoul, 06974, Republic of Korea.

Strain H239, a gram-negative, strictly aerobic, and oxidase-positive, and catalase-negative bacterium, was isolated from mountain soil in Gangwon-do of South Korea. Colonies were orange colored, and cells were motile rods with a single polar flagellum. Growth was observed between 25 and 30 °C (optimum, 30 °C), between pH 7. Read More

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Imaging of Polar and Nonpolar Lipids Using Desorption Electrospray Ionization/Post-photoionization Mass Spectrometry.

Methods Mol Biol 2021 ;2306:285-298

National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, China.

Desorption electrospray ionization mass spectrometry imaging (DESI-MSI) can record 2D distribution of polar lipids in tissue slices at ambient condition. However, sensitivity of DESI-MSI for nonpolar lipids is restricted by low ionization efficiency and severe ion suppression. Here, a compact post-photoionization assembly combined with DESI (DESI/PI) was developed for simultaneous imaging polar and nonpolar lipids in tissue sections by switching off/on a portable krypton lamp. Read More

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January 2021

Analytical Methodologies for Lipidomics in Hemp Plant.

Methods Mol Biol 2021 ;2306:257-273

Department of Chemistry, Università di Roma "La Sapienza", Rome, Italy.

The chemical composition of Cannabis sativa L. has been extensively studied for tens of years, but little is known about its lipidome. This chapter describes an analytical workflow for polar lipid determination in hemp. Read More

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January 2021

Mass Spectrometric Analysis of Meibomian Gland Lipids.

Authors:
Jianzhong Chen

Methods Mol Biol 2021 ;2306:157-170

Department of Optometry and Vision Science, The University of Alabama at Birmingham, Birmingham, AL, USA.

The precorneal tear film keeps the eye surface moist and helps to maintain normal eye function. The outermost lipid layer of the tear film, which attenuates tear film evaporation, contains meibum secreted from the meibomian gland. Most meibum lipids are neutral, including wax esters (WEs), cholesteryl esters (CEs), and diesters (DEs), along with some polar lipids including free fatty acids (FFAs), O-acyl-ω-hydroxy fatty acids (OAHFAs), and trace phospholipids. Read More

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January 2021

Hymenobacter negativus sp. nov., bacteria isolated from mountain soil collected in South Korea.

Antonie Van Leeuwenhoek 2021 May 4. Epub 2021 May 4.

Department of Food and Nutrition, Kookmin University, Seoul, 02707, Republic of Korea.

Two novel Gram-negative bacterial strains BT442 and BT584 were isolated from dry soil collected in mountains Busan and Guri, Korea during wintertime. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strains BT442 and BT584 both belong to a distinct lineage within the genus Hymenobacter (family Hymenobacteraceae, order Cytophagales, class Cytophagia). Strain BT442 was closely related to Hymenobacter soli PB17 (98. Read More

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Maricaulis alexandrii sp. nov., a novel active bioflocculants-bearing and dimorphic prosthecate bacterium isolated from marine phycosphere.

Antonie Van Leeuwenhoek 2021 May 4. Epub 2021 May 4.

Department of Marine Chemistry, Zhejiang Ocean University, Zhoushan, China.

An aerobic, Gram-stain-negative, straight or curved rods and dimorphic prosthecate bacterium designated as strain LZ-16-1 was isolated from phycosphere microbiota of routinely laboratory-cultured and highly-toxic marine dinoflagellate Alexandrium catenella LZT09. Strain LZ-16-1 produces active bioflocculanting exopolysaccharides (EPS). Cells were dimorphic with non-motile prostheca, or non-stalked and motile by a single polar flagellum. Read More

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CO supply modulates lipid remodelling, photosynthetic and respiratory activities in Chlorella species.

Plant Cell Environ 2021 May 1. Epub 2021 May 1.

Dipartimento di Biotecnologie, Università di Verona, Verona, Italy.

Microalgae represent a potential solution to reduce CO emission exploiting their photosynthetic activity. Here, the physiologic and metabolic responses at the base of CO assimilation were investigated in conditions of high or low CO availability in two of the most promising algae species for industrial cultivation, Chlorella sorokiniana and Chlorella vulgaris. In both species, high CO availability increased biomass accumulation with specific increase of triacylglycerols in C. Read More

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Enantioselective Total Synthesis of the Archaeal Lipid Parallel GDGT-0 (Isocaldarchaeol).

Angew Chem Int Ed Engl 2021 Apr 30. Epub 2021 Apr 30.

Stanford University, Chemistry, 333 Campus Drive, 94305, Stanford, UNITED STATES.

Archaeal glycerol dibiphytanyl glycerol tetraethers (GDGT) are some of the most unusual membrane lipids identified in nature. These amphiphiles are the major constituents of the membranes of numerous Archaea, some of which are extremophilic organisms. Due to their unique structures, there has been significant interest in studying both the biophysical properties and the biosynthesis of these molecules. Read More

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Polar Lipids of Commercial spp. of Different Origins: Profiling and Relevance for Seaweed Valorization.

Foods 2021 Apr 21;10(5). Epub 2021 Apr 21.

Department of Chemistry, LAQV-REQUIMTE, Santiago University Campus, University of Aveiro, 3810-193 Aveiro, Portugal.

Macroalgae of the genus have long been used as human food. Local environmental conditions, among other factors, can have an impact on their nutrient and phytochemical composition, as well as on the value of the seaweed for food and non-food applications. This study is the first to initiate a comparison between commercial spp. Read More

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Effects of 3FTx Protein Fraction from Venom on the Model and Native Membranes: Recognition and Implications for the Mechanisms of Toxicity.

Molecules 2021 Apr 9;26(8). Epub 2021 Apr 9.

Department of Biotechnology and Bioinformatics, Faculty of Chemistry, Rzeszow University of Technology, Powstańców Warszawy 6, 35-959 Rzeszów, Poland.

Three-finger toxins are naturally occurring proteins in Elapidae snake venoms. Nowadays, they are gaining popularity because of their therapeutic potential. On the other hand, these proteins may cause undesirable reactions inside the body's cells. Read More

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Characterization of the Aerobic Anoxygenic Phototrophic Bacterium sp. AAP5.

Microorganisms 2021 Apr 6;9(4). Epub 2021 Apr 6.

Centre Algatech, Institute of Microbiology, Czech Academy of Sciences, 379 81 Třeboň, Czech Republic.

An aerobic, yellow-pigmented, bacteriochlorophyll -producing strain, designated AAP5 (=DSM 111157=CCUG 74776), was isolated from the alpine lake Gossenköllesee located in the Tyrolean Alps, Austria. Here, we report its description and polyphasic characterization. Phylogenetic analysis of the 16S rRNA gene showed that strain AAP5 belongs to the bacterial genus and has the highest pairwise 16S rRNA gene sequence similarity with (98. Read More

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sp. nov. and sp. nov., isolated from the gut of larvae of , reclassification of as comb. nov. and emended description of the genus .

Int J Syst Evol Microbiol 2021 Apr;71(4)

Agricultural Microbiology Division, Wanju-gun, Jeollabuk-do 55365, Republic of Korea.

Two bacterial strains, FWR-8 and CFWR-9, were isolated from the gut of larvae of that were raised at the National Institute of Agricultural Sciences, Wanju-gun, Republic of Korea. Both strains were strictly aerobic, Gram-stain-positive and non-motile. Strain FWR-8 possessed the highest sequence similarity (98. Read More

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Polyphasic characterization of and genomic insights into a haloalkali-tolerant Saccharibacillus alkalitolerans sp. nov., that produces three cellulase isozymes and several antimicrobial compounds.

Antonie Van Leeuwenhoek 2021 Apr 28. Epub 2021 Apr 28.

Microbial Type Culture Collection and Gene Bank (MTCC), CSIR-Institute of Microbial Technology, Chandigarh, 160036, India.

A cellulase producing novel bacterial strain VR-M41 was isolated from an open-air vegetable and fruit market. Cells are found to be rod-shaped, endospore forming, positive for Gram's stain and negative for catalase, oxidase and urease. Strain VR-M41was halotolerant (upto 8. Read More

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sp. nov., isolated from water of crater lake.

Int J Syst Evol Microbiol 2021 Apr;71(4)

China General Microbiological Culture Collection Center, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China.

A Gram-stain-negative, aerobic, flagellated, non-spore-forming, rod-shaped bacterium, named B2R-29, was isolated from water collected from a crater lake on Da Hinggan mountain, PR China. Strain B2R-29 was oxidase- and catalase-positive. On the basis of the results of 16S rRNA gene sequence analyses, strain B2R-29 clearly belonged to the family , class and showed the highest similarity to EM1 (97. Read More

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sp. nov., a novel endophytic actinobacterium isolated from branch of .

Int J Syst Evol Microbiol 2021 Apr;71(4)

Life Sciences Institute, Zunyi Medical University, Zunyi 563006, PR China.

A Gram-stain-positive, aerobic, non-motile, non-endospore-forming and rod-shaped actinobacterium, designated strain CMS6Z-2, was isolated from a surface-sterilized branch of collected from the Maowei Sea, Guangxi Zhuang Autonomous Region, PR China. Strain CMS6Z-2 grew at 10-37 °C (optimum, 37 °C), pH 6.0-9. Read More

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gen. nov., sp. nov., isolated from a Kuwait tidal flat.

Int J Syst Evol Microbiol 2021 Apr;71(4)

Department of Biological Sciences, Faculty of Science, Kuwait University, Safat 13060, Kuwait.

A Gram-stain-positive, strictly aerobic, spore-forming, rod-shaped and non-motile bacterium designated strain SIJ1 was obtained from tidal flat sediment collected from the northern shore of Kuwait Bay, northwest of the Arabian Gulf. Strain SIJ1 grew optimally at 30 °C and pH 7-8 in the presence of 6 % (w/v) NaCl. The cell-wall peptidoglycan was based on -diaminopimelic acid and an unsaturated menaquinone with seven isoprene units (MK-7) was the predominant respiratory quinone. Read More

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Salicibibacter cibarius sp. nov. and Salicibibacter cibi sp. nov., two novel species of the family Bacillaceae isolated from kimchi.

J Microbiol 2021 May 28;59(5):460-466. Epub 2021 Apr 28.

Division of Research and Development, World Institute of Kimchi, Gwangju, 61755, Republic of Korea.

To date, all species in the genus Salicibibacter have been isolated in Korean commercial kimchi. We aimed to describe the taxonomic characteristics of two strains, NKC5-3 and NKC21-4, isolated from commercial kimchi collected from various regions in the Republic of Korea. Cells of these strains were rod-shaped, Gram-positive, aerobic, oxidase- and catalase-positive, non-motile, halophilic, and alkalitolerant. Read More

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gen. nov., sp. nov., a novel member of the family isolated from pit clay used for making Chinese strong aroma-type liquor.

Int J Syst Evol Microbiol 2021 Apr;71(4)

Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China.

An anaerobic, Gram-stain-positive, rod-shaped, motile and spore-forming bacterium, designated strain LBM18003, was isolated from pit clay used for making Chinese strong aroma-type liquor. Growth occurred at 20-40 °C (optimum, 30-37 °C), pH 4.5-9. Read More

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sp. nov., isolated from deep-sea sediment of the Pacific Ocean.

Int J Syst Evol Microbiol 2021 Apr;71(4)

School of Environment, Harbin Institute of Technology, Harbin, PR China.

A novel Gram-stain-negative, facultatively anaerobic, rod-shaped bacterium, designated as D167-6-1, was isolated from deep-sea sediment collected from the Pacific Ocean. The cells were catalase- and oxidase-positive, and motile by means of peritrichous flagella. Growth occurred at NaCl concentrations ranging from 0 to 19 % (optimum, 2-8 %, w/v), from pH 6 to 11 (optimum, 7-8) and at temperatures between 4 and 45 °C (optimum, 33 °C). Read More

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Draconibacterium halophilum sp. nov., A Halophilic Bacterium Isolated from Marine Sediment.

Curr Microbiol 2021 Apr 27. Epub 2021 Apr 27.

Department of Biology, Jeju National University, 102 Jejudaehak-ro, Jeju, 63243, South Korea.

A Gram-stain-negative, long-rod shaped, and facultatively anaerobic bacterium, designated as strain M1, was isolated from the marine sediment of Jeju Island, South Korea. Strain M1 was found to be catalase- and oxidase-positive, light yellow-pigmented, non-motile, and non-flagellated, growing optimally at 30 °C, pH 7.0, and in the presence of 3% (w/v) NaCl. Read More

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sp. nov., a novel plant resistance inducer against soft rot disease in tobacco.

Int J Syst Evol Microbiol 2021 Apr;71(4)

School of Life Sciences, BK21 FOUR KNU Creative BioResearch Group, Kyungpook National University, 80 Daehakro, Bukgu, Daegu 41566, Republic of Korea.

A novel Gram-negative, facultatively anaerobic, non-spore-forming and rod-shaped bacterial strain (KUDC3025) was isolated from rhizospheric soil of subsp. collected from the Dokdo Islands, Republic of Korea and bacterial strain MYb239 was isolated from compost from Kiel, Germany. Phylogenetic analysis based on 16S rRNA gene sequences, multilocus genes (, , and ), and whole-genome sequences indicated that both strains belonged to the genus and were most closely related to KCTC 2927. Read More

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Sulfitobacter alexandrii sp. nov., a new microalgae growth-promoting bacterium with exopolysaccharides bioflocculanting potential isolated from marine phycosphere.

Antonie Van Leeuwenhoek 2021 Apr 24. Epub 2021 Apr 24.

Department of Marine Chemistry, Zhejiang Ocean University, Zhoushan, China.

Marine phycosphere harbors unique cross-kingdom associations with enormous ecological significance in aquatic ecosystems as well as relevance for algal biotechnology industry. During our investigating the microbial composition and bioactivity of marine phycosphere microbiota (PM), a novel lightly yellowish and versatile bacterium designated strain AM1-D1 was isolated from cultivable PM of marine dinoflagellate Alexandrium minutum amtk4 that produces high levels of paralytic shellfish poisoning toxins (PSTs). Strain AM1-D1 demonstrates notable bioflocculanting bioactivity with bacterial exopolysaccharides (EPS), and microalgae growth-promoting (MGP) potential toward its algal host. Read More

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Cysteiniphilum marinum sp. nov., isolated from coastal seawater.

Antonie Van Leeuwenhoek 2021 Apr 24. Epub 2021 Apr 24.

State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510275, People's Republic of China.

Six aerobic Gram-negative bacteria were isolated from seawater in Guangdong Province, P.R. China. Read More

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Methylobacterium radiodurans sp. nov., a novel radiation-resistant Methylobacterium.

Arch Microbiol 2021 Apr 24. Epub 2021 Apr 24.

Division of Applied Food System, Major in Food Science and Technology, Seoul Women's University, Seoul, 01797, Korea.

A Gram-negative, aerobic, flagellated, rod-shaped, and pink-pigmented bacterium, strain 17Sr1-43, was isolated from a soil sample collected in Nowongu, Seoul, Korea. The isolate could grow at 18-37 °C (optimum, 28-30 °C), pH 6.0-8. Read More

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Alterinioella nitratireducens gen. nov., sp. nov., Isolated from Seawater in the West Pacific Ocean.

Curr Microbiol 2021 Apr 23. Epub 2021 Apr 23.

School of Oceanography, Shanghai Jiao Tong University, Shanghai, 200030, People's Republic of China.

A novel Gram-negative, nonspore forming, nonmotile, and short-rod-shaped aerobic bacterium, designated DY48A3-103, was isolated from a seawater sample collected from the West Pacific Ocean. Strain DY48A3-103 showed oxidase-positive and catalase-positive activities. Growth was observed at 10-37 °C (optimum 30 °C), at pH 6. Read More

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Butyribacter intestini gen. nov., sp. nov., a butyric acid-producing bacterium of the family Lachnospiraceae isolated from human faeces, and reclassification of Acetivibrio ethanolgignens as Acetanaerobacter ethanolgignens gen. nov., comb. nov.

Syst Appl Microbiol 2021 Mar 30;44(3):126201. Epub 2021 Mar 30.

BGI-Shenzhen, Shenzhen 518083, China; Shenzhen Engineering Laboratory of Detection and Intervention of Human Intestinal Microbiome, BGI-Shenzhen, Shenzhen, China; Qingdao-Europe Advanced Institute for Life Sciences, BGI-Shenzhen, Qingdao 266555, China; BGI College & Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, China. Electronic address:

A novel, non-motile, Gram-stain-positive, non-spore-forming, obligate anaerobic bacterium, designated strain TF01-11, was isolated from human faeces. The isolate was characterized by phylogenetic and phenotypic properties, as well as by determination of its whole genome sequence. The growth temperature and pH ranges were 30-42 °C and 6. Read More

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sp. nov., a bacterium isolated from marine sediment in the East China Sea.

Int J Syst Evol Microbiol 2021 Apr;71(4)

Li Dak Sum Yip Yio Chin Kenneth Li Marine Biopharmaceutical Research Center, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, 315800, PR China.

A Gram-stain-negative, ovoid-shaped, motile and strictly aerobic bacterium, designated ZQ172, was isolated from marine sediment sampled on Zhoushan Island located in the East China Sea. Strain ZQ172 grew optimally at temperatures of 25-30 °C, at NaCl concentration of 2.0 % (w/v) and at pH 7. Read More

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sp. nov., a marine bacterium isolated from surface seawater of the Yellow Sea, and proposal of gen. nov., comb. nov. and comb. nov.

Int J Syst Evol Microbiol 2021 Apr;71(4)

Shandong Province Key Laboratory of Applied Mycology, School of Life Sciences, Qingdao Agricultural University, Qingdao 266109, PR China.

A bacterial strain designated RZ02 was isolated from surface seawater collected from the Yellow Sea in PR China and characterized by polyphasic taxonomy. Cells of strain RZ02 were Gram-stain-negative, aerobic, non-motile, catalase- and oxidase-positive rods forming ochre-pigmented colonies. Growth occurred at 7-36 °C (optimum, 30 °C), at pH 6. Read More

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sp. nov., isolated from the intestine of the dark diving beetle , and sp. nov., isolated from the intestine of the diving beetle .

Int J Syst Evol Microbiol 2021 Apr;71(4)

Department of Biology and Department of Biomedical and Pharmaceutical Sciences, Kyung Hee University, Seoul 02447, Republic of Korea.

A polyphasic taxonomic approach was used to characterize two novel bacterial strains, designated as HDW11 and HDW19, isolated from intestine samples of the dark diving beetle and the diving beetle , respectively. Both isolates were Gram-stain-positive, facultatively anaerobic and non-motile. Strain HDW11 grew optimally at 30 °C, pH 8 and in the presence of 1% (w/v) NaCl. Read More

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sp. nov., isolated from a freshwater stream.

Int J Syst Evol Microbiol 2021 Apr;71(4)

Department of Biological Sciences and Bioengineering, Inha University, Incheon 22212, Republic of Korea.

A Gram-stain-negative, aerobic, non-motile and rod-shaped bacterium, designated as IMCC34836, was isolated from a freshwater stream. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain IMCC34836 was most closely related to HW001 (of the family ) with 95.6 % sequence similarity and formed a robust clade with HW001. Read More

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