keyword
MENU ▼
Read by QxMD icon Read
search

Yeast

keyword
https://www.readbyqxmd.com/read/28454063/interaction-of-amino-acid-functionalized-silver-nanoparticles-and-candida-albicans-polymorphs-a-deep-uv-fluorescence-imaging-study
#1
Radovan Dojčilović, Jelena D Pajović, Dušan K Božanić, Una Bogdanović, Vesna V Vodnik, Suzana Dimitrijević-Branković, Miona G Miljković, Slavka Kaščaková, Matthieu Réfrégiers, Vladimir Djoković
The interaction of the tryptophan functionalized Ag nanoparticles and live Candida albicans cells was studied by synchrotron excitation deep-ultraviolet (DUV) fluorescence imaging at the DISCO beamline of Synchrotron SOLEIL. DUV imaging showed that incubation of the fungus with functionalized nanoparticles results in significant increase in the fluorescence signal. The analysis of the images revealed that the interaction of the nanoparticles with (pseudo)hyphae polymorphs of the diploid fungus was less pronounced than in the case of yeast cells or budding spores...
April 23, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28454002/characterization-of-lipid-accumulation-and-lipidome-analysis-in-the-oleaginous-yeasts-rhodosporidium-azoricum-and-trichosporon-oleaginosus
#2
Claudia Capusoni, Valentina Rodighiero, Daniela Cucchetti, Silvia Galafassi, Daniele Bianchi, Giuliana Franzosi, Concetta Compagno
The influence of cultural conditions on lipid production was investigated in two species, Trichosporon oleaginosus and Rhodosporidium azoricum. We showed that nitrogen limitation is not the main factor triggering the mechanism of lipid accumulation in T. oleaginosus. Moreover, a scarce availability of oxygen negatively affected lipid synthesis to a lesser extent in T. oleaginosus than in R. azoricum. This highlights how the importance of controlling fermentation parameters is strictly linked to the yeast species employed...
April 1, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28453990/thermo-chemo-sonic-pre-digestion-of-waste-activated-sludge-for-yeast-cultivation-to-extract-lipids-for-biodiesel-production
#3
P Selvakumar, P Sivashanmugam
The low cost biosynthesis of microbial lipids are an efficient feedstock to replace plant based oil for biodiesel production. The present study objective is to explore the effect of thermo-chemo-sonic pre-digestion of municipal Waste Activated Sludge (WAS) to cultivate oleaginous L. starkeyi MTCC-1400 as a model organism to produce high yield biomass and lipid. Higher Suspended Solids (SS) reduction (20 and 15.71%) and Chemical Oxygen Demand (COD) solubilization (27.6 and 22.3%) were achieved at a Specific Energy (SE) input of 5569 kJ/kg for WAS digested with NaOH and KOH, respectively...
April 25, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28453776/modulating-and-evaluating-receptor-promiscuity-through-directed-evolution-and-modeling
#4
Sarah C Stainbrook, Jessica S Yu, Michael P Reddick, Neda Bagheri, Keith E J Tyo
The promiscuity of G-protein-coupled receptors (GPCRs) has broad implications in disease, pharmacology and biosensing. Promiscuity is a particularly crucial consideration for protein engineering, where the ability to modulate and model promiscuity is essential for developing desirable proteins. Here, we present methodologies for (i) modifying GPCR promiscuity using directed evolution and (ii) predicting receptor response and identifying important peptide features using quantitative structure-activity relationship models and grouping-exhaustive feature selection...
April 27, 2017: Protein Engineering, Design & Selection: PEDS
https://www.readbyqxmd.com/read/28453552/specific-blockade-of-rictor-mtor-association-inhibits-mtorc2-activity-and-is-cytotoxic-in-glioblastoma
#5
Angelica Benavides-Serrato, Jihye Lee, Brent Holmes, Kenna A Landon, Tariq Bashir, Michael E Jung, Alan Lichtenstein, Joseph Gera
A small molecule which specifically blocks the interaction of Rictor and mTOR was identified utilizing a high-throughput yeast two-hybrid screen and evaluated as a potential inhibitor of mTORC2 activity in glioblastoma multiforme (GBM). In vitro, CID613034 inhibited mTORC2 kinase activity at submicromolar concentrations and in cellular assays specifically inhibited phosphorylation of mTORC2 substrates, including AKT (Ser-473), NDRG1 (Thr-346) and PKCα (Ser-657), while having no appreciable effects on the phosphorylation status of the mTORC1 substrate S6K (Thr-389) or mTORC1-dependent negative feedback loops...
2017: PloS One
https://www.readbyqxmd.com/read/28453523/the-mismatch-repair-and-meiotic-recombination-endonuclease-mlh1-mlh3-is-activated-by-polymer-formation-and-can-cleave-dna-substrates-in-trans
#6
Carol M Manhart, Xiaodan Ni, Martin A White, Joaquin Ortega, Jennifer A Surtees, Eric Alani
Crossing over between homologs is initiated in meiotic prophase by the formation of DNA double-strand breaks that occur throughout the genome. In the major interference-responsive crossover pathway in baker's yeast, these breaks are resected to form 3' single-strand tails that participate in a homology search, ultimately forming double Holliday junctions (dHJs) that primarily include both homologs. These dHJs are resolved by endonuclease activity to form exclusively crossovers, which are critical for proper homolog segregation in Meiosis I...
April 2017: PLoS Biology
https://www.readbyqxmd.com/read/28453269/production-of-protein-concentrate-and-1-3-propanediol-by-wheat-based-thin-stillage-fermentation
#7
Kornsulee Ratanapariyanuch, Youn Young Shim, Shahram Emami, Martin John Tarsisius Reaney
Fermentation of wheat with yeast produces thin stillage (W-TS) and distiller's wet grains. A subsequent fermentation of W-TS (two-stage fermentation, TSF) with endemic bacteria at 25 and 37 °C decreased glycerol and lactic acid concentrations while 1,3-propanediol (1,3-PD) and acetic acid accumulated with greater 1,3-PD and acetic acid produced at 37 °C. During TSF, W-TS colloids coagulated and floated in the fermentation medium producing separable liquid and slurry fractions. The predominant endemic bacteria in W-TS were Lactobacillus panis, L...
April 28, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28449125/saccharomyces-cerevisiae-accumulates-gapdh-derived-peptides-on-its-cell-surface-that-induce-death-of-non-saccharomyces-yeasts-by-cell-to-cell-contact
#8
Patrícia Branco, Varongsiri Kemsawasd, Lara Santos, Mário Diniz, Jorge Caldeira, Maria Gabriela Almeida, Nils Arneborg, Helena Albergaria
During wine fermentations Saccharomyces cerevisiae starts to excrete into the growth medium antimicrobial peptides (AMPs) that induce death of non-Saccharomyces yeasts at the end of exponential growth phase (24-48 h). Those AMPs were found to derive from the glycolytic enzyme glyceraldehyde-3-phosphate dehydrogenase (GAPDH). On the other hand, the early death of non-Saccharomyces yeasts during wine fermentations was also found to be mediated by a cell-to-cell contact mechanism. Since GAPDH is a cell wall-associated protein in S...
April 25, 2017: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/28449102/enhancing-expression-of-ssu1-genes-in-saccharomyces-uvarum-leads-to-an-increase-in-sulfite-tolerance-and-transcriptome-profiles-change
#9
X Z Liu, M Sang, X A Zhang, T K Zhang, H Y Zhang, X He, S X Li, X D Sun, Z M Zhang
Saccharomyces uvarum is a good wine yeast species which may have great potential for the future. However, sulfur tolerance of most S. uvarum strains is very poor. In addition there is still little information about the SSU1 gene of S. uvarum. In order to analyze the function of SSU1 genes, two expression vectors which contained different SSU1 genes were constructed and transferred into a sulfite-tolerant S. uvarum strain A9. Then sulfite tolerance, PCR analysis, sequencing analysis, SO2 output production analysis, RT-qPCR analysis and transcriptome analysis were used to access the function of the S...
April 25, 2017: FEMS Yeast Research
https://www.readbyqxmd.com/read/28449100/integrated-analysis-of-individual-codon-contribution-to-protein-biosynthesis-reveals-a-new-approach-to-improving-the-basis-of-rational-gene-design
#10
Juan C Villada, Otávio José Bernardes Brustolini, Wendel Batista da Silveira
Gene codon optimization may be impaired by the misinterpretation of frequency and optimality of codons. Although recent studies have revealed the effects of codon usage bias (CUB) on protein biosynthesis, an integrated perspective of the biological role of individual codons remains unknown. Unlike other previous studies, we show, through an integrated framework that attributes of codons such as frequency, optimality and positional dependency should be combined to unveil individual codon contribution for protein biosynthesis...
April 24, 2017: DNA Research: An International Journal for Rapid Publication of Reports on Genes and Genomes
https://www.readbyqxmd.com/read/28449083/proteomic-response-to-linoleic-acid-hydroperoxide-in-saccharomyces-cerevisiae
#11
Patrick J O'Doherty, Alamgir Khan, Adam J Johnson, Peter J Rogers, Trevor D Bailey, Ming J Wu
Yeast AP-1 transcription factor (Yap1p) and the enigmatic oxidoreductases Oye2p and Oye3p are involved in counteracting lipid oxidants and their unsaturated breakdown products. In order to uncover the response to linoleic acid hydroperoxide (LoaOOH) and the roles of Oye2p, Oye3p, and Yap1p, we carried out proteomic analysis of the homozygous deletion mutants oye3Δ, oye2Δ, and yap1Δ alongside the diploid parent strain BY4743. The findings demonstrate that deletion of YAP1 narrowed the response to LoaOOH, as the number of proteins differentially expressed in yap1Δ was 70% of that observed in BY4743...
April 25, 2017: FEMS Yeast Research
https://www.readbyqxmd.com/read/28448954/copper-complexes-containing-thiosemicarbazones-derived-from-6-nitropiperonal-antimicrobial-and-biophysical-properties
#12
Floyd A Beckford, Kelsey R Webb
A series of four thiosemicarbazones from 6-nitropiperonal along with the corresponding copper complexes were synthesized. The biophysical characteristics of the complexes were investigated by the binding to DNA and human serum albumin. The binding to DNA is moderate; the binding constants run from (0.49-7.50)×10(4)M(-1). In relation to HSA, the complexes interact strongly with binding constants on the order of 10(5)M(-1). The complexes also display antioxidant behavior as determined by the ability to scavenge diphenylpicrylhydrazyl (dpph) and nitric oxide radicals...
April 20, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28448880/rapid-green-synthesis-of-gold-nanocatalyst-for-high-efficiency-degradation-of-quinclorac
#13
Guorong Shi, Yulu Li, Gaihong Xi, Qinqin Xu, Zijun He, Yating Liu, Jianhui Zhang, Jun Cai
Porous chemical pretreated Saccharomyces cerevisiae was used as support, stabilizer, and reducing agent for the rapid green synthesis of gold nanocatalyst. Au nanoparticles (Au NPs) were generated through in-situ reduction of the absorbed Au(III) by the reductive functional groups of mannoproteins in yeast cell wall. The obtained spherical mono-dispersed Au NPs have an average particle diameter of 9.99±1.63nm as evidenced by TEM image, and exhibits excellent catalytic activity for the dechlorination of quinclorac to 8-quinoline-carboxylic acid by sodium borohydride...
April 18, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28448767/transcriptional-control-of-yeast-ribosome-biogenesis-a-multifaceted-role-for-general-regulatory-factors
#14
Maria Cristina Bosio, Beatrice Fermi, Giorgio Dieci
In Saccharomyces cerevisiae, a group of more than 200 co-regulated genes (Ribi genes) is involved in ribosome biogenesis. This regulon has recently been shown to rely on a small set of transcriptional regulators (mainly Abf1, but also Reb1, Tbf1 and Rap1) previously referred to as General Regulatory Factors (GRFs) because of their widespread binding and action at many promoters and other specialized genomic regions. Intriguingly, Abf1 binding to Ribi genes is differentially modulated in response to distinct nutrition signaling pathways...
April 27, 2017: Transcription
https://www.readbyqxmd.com/read/28448590/significant-changes-in-circulating-microrna-by-dietary-supplementation-of-selenium-and-coenzyme-q10-in-healthy-elderly-males-a-subgroup-analysis-of-a-prospective-randomized-double-blind-placebo-controlled-trial-among-elderly-swedish-citizens
#15
Urban Alehagen, Peter Johansson, Jan Aaseth, Jan Alexander, Dick Wågsäter
BACKGROUND: Selenium and coenzyme Q10 is essential for important cellular functions. A low selenium intake is reported from many European countries, and the endogenous coenzyme Q10 production is decreasing in the body with increasing age. Supplementation with selenium and coenzyme Q10 in elderly have shown reduced cardiovascular mortality and reduced levels of markers of inflammation. However, microRNA analyses could give important information on the mechanisms behind the clinical effects of supplementation...
2017: PloS One
https://www.readbyqxmd.com/read/28448491/relevant-units-of-analysis-for-applied-and-basic-research-dealing-with-neglected-transmissible-diseases-the-predominant-clonal-evolution-model-of-pathogenic-microorganisms
#16
REVIEW
Michel Tibayrenc, Francisco J Ayala
The predominant clonal evolution (PCE) model seeks to formulate a common population genetics framework for all micropathogens (namely, parasitic protozoa, fungi and yeasts, bacteria, and viruses). It relies on a definition of clonality that is only based on population structure features (namely, strongly restrained genetic recombination). Its clear-cut properties make it of strong interest for applied and basic research, since it permits the definition of stable, clearly delimited units of analysis below the species level: clonal genotypes and discrete genetic subdivisions ("near-clades")...
April 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28448128/total-chemical-synthesis-and-folding-of-all-l-and-all-d-variants-of-oncogenic-kras-g12v
#17
Adam Marc Levinson, John H McGee, Andrew G Roberts, Gardner Creech, Ting Wang, Michael T Peterson, Ronald C Hendrickson, Gregory L Verdine, Samuel J Danishefsky
The Ras proteins are essential GTPases involved in the regulation of cell proliferation and survival. Mutated oncogenic forms of Ras alter effector binding and innate GTPase activity, leading to deregulation of downstream signal transduction. Mutated forms of Ras are involved in approximately 30% of human cancers. Despite decades of effort to develop direct Ras inhibitors, Ras has long been considered 'undruggable' due to its high affinity for GTP and its lack of hydrophobic binding pockets. Herein, we report a total chemical synthesis of all-L- and all-D-amino acid biotinylated variants of oncogenic mutant KRas(G12V)...
April 27, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28448036/using-microfluidic-devices-to-measure-lifespan-and-cellular-phenotypes-in-single-budding-yeast-cells
#18
Ke Zou, Diana S Ren, Qi Ou-Yang, Hao Li, Jiashun Zheng
Budding yeast Saccharomyces cerevisiae is an important model organism in aging research. Genetic studies have revealed many genes with conserved effects on the lifespan across species. However, the molecular causes of aging and death remain elusive. To gain a systematic understanding of the molecular mechanisms underlying yeast aging, we need high-throughput methods to measure lifespan and to quantify various cellular and molecular phenotypes in single cells. Previously, we developed microfluidic devices to track budding yeast mother cells throughout their lifespan while flushing away newborn daughter cells...
March 30, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28448000/high-resolution-imaging-and-analysis-of-individual-astral-microtubule-dynamics-in-budding-yeast
#19
Colby P Fees, Cassi Estrem, Jeffrey K Moore
Dynamic microtubules are fundamental to many cellular processes, and accurate measurements of microtubule dynamics can provide insight into how cells regulate these processes and how genetic mutations impact regulation. The quantification of microtubule dynamics in metazoan models has a number of associated challenges, including a high microtubule density and limitations on genetic manipulations. In contrast, the budding yeast model offers advantages that overcome these challenges. This protocol describes a method to measure the dynamics of single microtubules in living yeast cells...
April 20, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28447292/ecology-of-the-human-opportunistic-black-yeast-exophiala-dermatitidis-indicates-preference-for-human-made-habitats
#20
Monika Novak Babič, Jerneja Zupančič, Nina Gunde-Cimerman, Sybren de Hoog, Polona Zalar
Exophiala dermatitidis is an ascomycetous black yeast from the order Chaetothyriales. Its growth characteristics include the polymorphic life cycle, ability to grow at high and low temperatures, at a wide pH range, survival at high concentrations of NaCl, and survival at high UV and radioactive radiation. Exophiala dermatitidis causes deep or localized phaeohyphomycosis in immuno-compromised people worldwide and is regularly encountered in the lungs of cystic fibrosis patients. Regardless of numerous ecological studies worldwide, little is known about its natural habitat or the possible infection routes...
April 26, 2017: Mycopathologia
keyword
keyword
5203
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"