keyword
MENU ▼
Read by QxMD icon Read
search

Amino acid

keyword
https://www.readbyqxmd.com/read/28918586/characterization-of-truncated-dsz-operon-responsible-for-dibenzothiophene-biodesulfurization-in-rhodococcus-sp-fum94
#1
Somayeh Khosravinia, Mahmood A Mahdavi, Reza Gheshlaghi, Hesam Dehghani
Numerous desulfurizing bacteria from the Rhodococcus genus harbor conserved dsz genes responsible for the degradation of sulfur compounds through 4S pathway. This study describes a newly identified desulfurizing bacterium, Rhodococcus sp. FUM94, which unlike previously identified strains encodes a truncated dsz operon. DNA sequencing revealed a frameshift mutation in the dszA gene, which led to an alteration of 66 amino acids and deletion of other C-terminal 66 amino acids. The resulting DszA polypeptide was shorter than DszA in Rhodococcus sp...
September 16, 2017: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/28918476/effects-of-stocking-density-on-lipid-deposition-and-expression-of-lipid-related-genes-in-amur-sturgeon-acipenser-schrenckii
#2
Yuanyuan Ren, Haishen Wen, Yun Li, Jifang Li, Feng He, Meng Ni
To investigate the correlation between lipid deposition variation and stocking density in Amur sturgeon (Acipenser schrenckii) and the possible physiological mechanism, fish were conducted in different stocking densities (LSD 5.5 kg/m(3), MSD 8.0 kg/m(3), and HSD 11.0 kg/m(3)) for 70 days and then the growth index, lipid content, lipase activities, and the mRNA expressions of lipid-related genes were examined. Results showed that fish subjected to higher stocking density presented lower final body weights (FBW), specific growth ratio (SGR), and gonad adipose tissue index (GAI) (P < 0...
September 16, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28918473/complete-genome-sequences-of-two-insect-specific-flaviviruses
#3
Jermilia Charles, Chandra S Tangudu, Andrew E Firth, Bradley J Blitvich
We determined the complete genomic sequences of two previously discovered insect-specific flaviviruses, Marisma mosquito virus (MMV) and Nanay virus (NANV), using a combination of high-throughput sequencing, reverse transcription-polymerase chain reaction, 5' and 3' rapid amplification of cDNA ends and Sanger sequencing. Complete polyprotein amino acid sequence alignments revealed that the closest known relatives of MMV and NANV are Donggang virus (89% identity, 95% similarity) and Nounané virus (53% identity, 70% similarity), respectively...
September 16, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28918301/mathematical-fundamentals-for-the-noise-immunity-of-the-genetic-code
#4
Elena Fimmel, Lutz Strüngmann
Symmetry is one of the essential and most visible patterns that can be seen in nature. Starting from the left-right symmetry of the human body, all types of symmetry can be found in crystals, plants, animals and nature as a whole. Similarly, principals of symmetry are also some of the fundamental and most useful tools in modern mathematical natural science that play a major role in theory and applications. As a consequence, it is not surprising that the desire to understand the origin of life, based on the genetic code, forces us to involve symmetry as a mathematical concept...
September 13, 2017: Bio Systems
https://www.readbyqxmd.com/read/28918252/a-pdgf-vegf-homologue-provides-new-insights-into-the-nucleus-grafting-operation-and-immune-response-in-the-pearl-oyster-pinctada-fucata
#5
Xian-De Huang, Hua Zhang, Mao-Xian He
The platelet-derived growth factor/vascular endothelial growth factor (PDGF/VEGF, PVF) family of proteins have been implicated in a wide range of biological functions in vertebrates, including cell proliferation, cell differentiation, cell migration, neural development and especially angiogenesis/vasculogenesis. In this study, a PVF gene, belonging to the PDGF/VEGF family, was cloned and characterized from Pinctada fucata. It contained an ORF of 1110bp encoding a putative protein of 369 amino acids. The deduced amino acid sequence presented the typical structural features of PDGF family members and the N-terminal signal peptide for secretion...
September 13, 2017: Gene
https://www.readbyqxmd.com/read/28918248/total-nitrogen-removal-products-and-molecular-characteristics-of-14%C3%A2-n-containing-compounds-in-supercritical-water-oxidation
#6
Bowen Yang, Zhemin Shen, Zhiwen Cheng, Wenchao Ji
Supercritical water oxidation (SCWO) process of 14 N-containing compounds was investigated with residence time of 150 s, at a stable pressure of 24 MPa, temperatures of 350-500 °C and 500% excess oxygen, resulted in total nitrogen (TN) removal from 41 to 96%. The products of N-containing species were mainly N2, nitrate, ammonium, as well as hardly nitrite or NOX. The yield distributions of nitrate and ammonium were different: the main nitrate concentrations were obtained from the compounds containing nitro-group and diazonium, like nitrobenzene, 2-nitrophenol and eriochrome blue black R (EBBR); the predominant ammonium yields were achieved from amino-group and N-heterocyclic compounds, such as aniline, 5-chloro-2-methylaniline, 3,4-dichloroaniline, 1-methylimidazole, 1,10-phenanthroline, cyanuric acid, indole and 2,3-indolinedione...
August 16, 2017: Chemosphere
https://www.readbyqxmd.com/read/28918133/short-communication-short-term-intravenous-amino-acid-infusions-as-a-method-to-detect-limiting-amino-acids-in-dairy-cattle-diets
#7
Roni Yair, Michael S Allen
We hypothesized that the addition of limiting AA increases dry matter intake (DMI) by reducing anaplerosis and hepatic oxidation. Accordingly, the objective of this work was to examine the effects of short-term intravenous infusions of Met, Lys, and His (which are considered the most limiting AA) on DMI as a method to detect whether specific AA are limiting in dairy cow diets. We conducted 4 experiments using Holstein cows in the immediate postpartum period to address this objective. The first experiment used 4 cows 6 to 10 d postpartum (PP) in a 4 × 4 Latin square design with 1-d periods including 12 h for infusions and 12 h for recovery...
September 13, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28918092/growth-rate-dependent-regulation-of-trna-level-and-charging-in-bacillus-licheniformis
#8
Iolanda Ferro, Klaus Liebeton, Zoya Ignatova
Cellular growth crucially depends on protein synthesis and the abundance of translational components. Among them, aminoacyl-tRNAs play a central role in biosynthesis and shape the kinetics of mRNA translation, thus influencing protein production. Here, we used microarray-based approaches to determine the charging levels and tRNA abundance of Bacillus licheniformis. We observed an interesting cross-talk among tRNA expression, charging pattern and growth rate. For a large subset of tRNAs, we found a co-regulated and augmented expression at high growth rate...
September 13, 2017: Journal of Molecular Biology
https://www.readbyqxmd.com/read/28917797/a-rapid-and-specific-colorimetric-method-for-free-tryptophan-quantification
#9
Yinan Wu, Tianmin Wang, Chong Zhang, Xin-Hui Xing
Tryptophan is one of the eight essential amino acids and plays an important role in many biological processes. For its interaction with human health, environment and relevant commercial interest in biotechnology-based production, rapid and specific quantification method for this molecule accessible to common laboratories is badly needed. We herein reported a simple colorimetric method for free tryptophan quantification with 96-well-plate-level throughput. Our protocol firstly converted tryptophan to indole enzymatically by purified tryptophanases and then used reactivity of indole with hydroxylamine to form pink product with absorption peak at 530nm, enabling the quantification of tryptophan with simple spectrometry in just two hours...
January 1, 2018: Talanta
https://www.readbyqxmd.com/read/28917735/trace-analysis-of-nitrite-ions-in-environmental-samples-by-using-in-situ-synthesized-zein-biopolymeric-nanoparticles-as-the-novel-green-solid-phase-extractor
#10
Amir Hatamie, Mahmoud Nassiri, Meghdad Doust Alivand, Amit Bhatnagar
For the first time, a novel green method using Zein biopolymeric nanoparticles as a green dispersive solid-phase extractor is reported for the separation and preconcentration of trace amount of nitrite (NO2(-)) ions in ppb levels. The Zein protein is a biodegradable hydrophobic plant protein that is obtained from corn and is composed of a number of hydrophobic amino acids. Zein bionanoparticles were synthesized in an anti-solvent process and used as a new biosorbent in the extraction technique. In the proposed technique, by using a standard method at first, a mixture of 1-naphthylamine and sulphanilic acid as selective regents was added to the samples, and in the presence of the nitrite ion, a red azo product was formed...
January 1, 2018: Talanta
https://www.readbyqxmd.com/read/28917734/a-novel-benzothiazole-based-fluorescent-probe-for-cysteine-detection-and-its-application-on-test-paper-and-in-living-cells
#11
Yuewen Yu, Hongping Xu, Wang Zhang, Bingxiang Wang, Yuliang Jiang
A novel simple and readily synthesized turn-on fluorescent probe 4-(benzo[d]thiazol-2-yl)-1,3-phenylene bis(2-chloroacetate) (BPBC) for cysteine (Cys) was reported. This probe was designed based on an excited-state intramolecular proton transfer (ESIPT) dye: benzothiazole, and two chloroacetate groups present in benzothiazole as the reaction sites for Cys. It shows high selectivity and sensitivity for Cys over other amino acids including the similar structured homocysteine (Hcy) and glutathione (GSH). In addition, probe BPBC was successfully applied to bioimage intracellular Cys in living cells with low cytotoxicity...
January 1, 2018: Talanta
https://www.readbyqxmd.com/read/28917668/gut-microbe-mediated-suppression-of-inflammation-associated-colon-carcinogenesis-by-luminal-histamine-production
#12
Chunxu Gao, Bhanu Priya Ganesh, Zhongcheng Shi, Rajesh Rasik Shah, Robert Fultz, Angela Major, Susan Venable, Monica Lugo, Kathleen Hoch, Xiaowei Chen, Anthony Haag, Timothy C Wang, James Versalovic
Microbiome-mediated suppression of carcinogenesis may open new avenues for identification of therapeutic targets and prevention strategies in oncology. Histidine decarboxylase (HDC) deficiency has been shown to promote inflammation-associated colorectal cancer by accumulation of CD11b(+)Gr-1(+) immature myeloid cells, indicating a potential antitumorigenic effect of histamine. Here, we demonstrate that administration of hdc(+)Lactobacillus reuteri in the gut resulted in luminal hdc gene expression and histamine production in the intestines of Hdc(-/-) mice...
September 6, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28917538/identification-of-ibv-qx-vaccine-markers-should-vaccine-acceptance-by-authorities-require-similar-identifications-for-all-live-ibv-vaccines
#13
Valeria Listorti, Andrea Laconi, Elena Catelli, Mattia Cecchinato, Caterina Lupini, Clive J Naylor
IBV genotype QX causes sufficient disease in Europe for several commercial companies to have started developing live attenuated vaccines. Here, one of those vaccines (L1148) was fully consensus sequenced alongside its progenitor field strain (1148-A) to determine vaccine markers, thereby enabling detection on farms. Twenty-eight single nucleotide substitutions were associated with the 1148-A attenuation, of which any combination can identify vaccine L1148 in the field. Sixteen substitutions resulted in amino acid coding changes of which half were in spike...
September 13, 2017: Vaccine
https://www.readbyqxmd.com/read/28917449/highly-potent-antiobesity-effect-of-a-short-length-peptide-yy-analog-in-mice
#14
Naoki Nishizawa, Ayumu Niida, Yusuke Adachi, Yoko Kanematsu-Yamaki, Yasushi Masuda, Satoshi Kumano, Kotaro Yokoyama, Yoko Noguchi, Tomoko Asakawa, Hideki Hirabayashi, Nobuyuki Amano, Shiro Takekawa, Tetsuya Ohtaki, Taiji Asami
Continuous administration of a 14-amino acid peptide YY (PYY) analog, Ac-[d-Pro(24),Pya(4)(26),Cha(27,36),Aib(28,31),Lys(30)]PYY(23-36) (4), which has a high binding affinity and agonist activity for the neuropeptide Y2 receptor (Y2R), has previously shown an antiobesity effect in a 2-week diet-induced obesity (DIO) study in mice. However, there remained a possibility to obtain more potent analogs by further improving its pharmacokinetic profile. A combination of the N-terminal 4-imidazolecarbonyl moiety and three amino acid substitutions, trans-4-hydroxy-d-proline (d-Hyp)(24), isovaline (Iva)(25), and γ-methylleucine (γMeLeu)(28), not only improved the binding affinity of the peptide for Y2R but also increased its anorectic activity in lean mice...
September 1, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28917303/the-evaluation-of-gm6-based-elisa-and-ict-as-diagnostic-methods-on-a-mongolian-farm-with-an-outbreak-of-non-tsetse-transmitted-horse-trypanosomosis
#15
Batdorj Davaasuren, Tovuu Amgalanbaatar, Simon Peter Musinguzi, Keisuke Suganuma, Davaajav Otgonsuren, Ehab Mossaad, Sandagdorj Narantsatsral, Banzragch Battur, Badgar Battsetseg, Xuenan Xuan, Noboru Inoue
Trypanosoma equiperdum, which is the etiological agent of dourine, spreads through sexual intercourse in equines. Dourine (T. equiperdum) has been reported in Mongolia, where it is considered an economically important disease of horses. T. evansi has also been reported in Mongolian domestic animals. The objective of this study was to evaluate the potential application of recombinant T. evansi GM6 (rTeGM6-4r)-based diagnostic methods on a farm with an outbreak of non-tsetse transmitted horse trypanosomosis. Ninety-seven percent homology was found between the amino acid sequences of T...
September 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28917235/reconfirmation-of-improved-tolerance-to-a-new-amino-acid-based-formula-by-infants-with-cow-s-milk-protein-allergy
#16
Pipop Jirapinyo, Narumon Densupsoontorn, Channagan Kangwanpornsiri, Renu Wongarn, Hathaichanok Tirapongporn, Kwanjai Chotipanang, Phakkanan Phuangphan
BACKGROUND AND OBJECTIVES: Reasons for intolerance to commercial amino acid-based formulas (cAAF) in infants diagnosed with cow's milk protein allergy (CMA) remain unknown. We assume that minute amounts of proteins, presenting in the glucose polymers derived from corn starch (cGPs), can elicit the intolerance to the cAAFs observed in some infants with CMA. By replacing cGPs with glucose polymers derived from rice starch (rGPs), a new amino acid-based (nAAF) formula has been shown to be better tolerated than an existing cAAF...
2017: Asia Pacific Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28917213/hydraulic-connectivity-and-evaporation-control-the-water-quality-and-sources-of-chromophoric-dissolved-organic-matter-in-lake-bosten-in-arid-northwest-china
#17
Lei Zhou, Yongqiang Zhou, Yang Hu, Jian Cai, Chengrong Bai, Keqiang Shao, Guang Gao, Yunlin Zhang, Erik Jeppesen, Xiangming Tang
Lake Bosten is the largest oligosaline lake in arid northwestern China, and water from its tributaries and evaporation control the water balance of the lake. In this study, water quality and chromophoric dissolved organic matter (CDOM) absorption and fluorescence were investigated in different seasons to elucidate how hydraulic connectivity and evaporation may affect the water quality and variability of CDOM in the lake. Mean suspended solids and turbidity were significantly higher in the upstream tributaries than in the lake, the difference being notably more pronounced in the wet than in the dry season...
September 6, 2017: Chemosphere
https://www.readbyqxmd.com/read/28917082/protective-effect-of-salusin-%C3%AE-and-salusin-%C3%AE-against-ethanol-induced-gastric-ulcer-in-rats
#18
Ayhan Tanyeli, Ersen Eraslan, Elif Polat, Tuğba Bal
BACKGROUND: Alcohol consumption has been found to be associated with gastric ulcers, including gastric mucosal lesions. Salusin-α and salusin-β are bioactive peptides having 28 and 20 amino acids, respectively. Salusin-α and salusin-β immunoreactivity has been detected in the stomach and in the intestines. It has been reported that the salusins regulate the cytokine levels and decrease the infarct area in the heart tissue after ischemia. In this study, we investigated the effects of the salusins in the gastric injury formed with ethanol...
September 16, 2017: Journal of Basic and Clinical Physiology and Pharmacology
https://www.readbyqxmd.com/read/28917060/lipids-and-ions-traverse-the-membrane-by-the-same-physical-pathway-in-the-nhtmem16-scramblase
#19
Tao Jiang, Kuai Yu, H Criss Hartzell, Emad Tajkhorshid
From bacteria to mammals, different phospholipid species are segregated between the inner and outer leaflets of the plasma membrane by ATP-dependent lipid transporters. Disruption of this asymmetry by ATP-independent phospholipid scrambling is important in cellular signaling, but its mechanism remains incompletely understood. Using MD simulations coupled with experimental assays, we show that the surface hydrophilic transmembrane cavity exposed to the lipid bilayer on the fungal scramblase nhTMEM16 serves as the pathway for both lipid translocation and ion conduction across the membrane...
September 16, 2017: ELife
https://www.readbyqxmd.com/read/28917052/monitoring-of-methionine-sulfoxide-content-and-methionine-sulfoxide-reductase-activity
#20
Lionel Tarrago, Emmanuel Oheix, Zalán Péterfi, Vadim N Gladyshev
The sulfur-containing amino acid methionine (Met) plays critical roles in protein synthesis, methylation, and sulfur metabolism. Both in its free form and in the form of an amino acid residue, it can be oxidized to the R and S diastereomers of methionine sulfoxide (MetO). Organisms evolved methionine sulfoxide reductases (MSRs) to reduce MetO to Met, with the MSRs type A (MSRA) and type B (MSRB) being specific for the S and R forms of MetO, respectively. In mammals, the selenoprotein MSRB1 plays an important protein repair function, and its expression is tightly regulated by dietary selenium...
2018: Methods in Molecular Biology
keyword
keyword
4154
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"