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Amino acids

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https://www.readbyqxmd.com/read/28340427/identification-and-characterization-of-a-%C3%AE-defensin-gene-involved-in-the-immune-defense-response-of-channel-catfish-ictalurus-punctatus
#1
Jieyao Zhu, Hong Wang, Jun Wang, Xingli Wang, Shuang Peng, Yi Geng, Kaiyu Wang, Pin Ouyang, Zhiqiong Li, Xiaoli Huang, Defang Chen
Antimicrobial peptides are small peptides that play important roles in a host's innate immune response. As an important antimicrobial peptide, β-defensin widely distribute in mammals, insects and plants with broad-spectrum antimicrobial activity. In this study, the β-defensin gene of the channel catfish, Ictalurus punctatus, was cloned, sequenced, and subjected to a bioinformatic analysis. The β-defensin gene of the channel catfish contains three exons and two introns, and encodes a precursor peptide consisting of two domains: a signal peptide of 24 amino acid residues and a mature peptide of 43 amino acid residues...
March 21, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28340387/an-exploration-of-the-effect-and-interaction-mechanism-of-bisphenol-a-on-waste-sludge-hydrolysis-with-multi-spectra-isothermal-titration-microcalorimetry-and-molecule-docking
#2
Guangying Hou, Rui Zhang, Xiaoyan Hao, Chunguang Liu
An increasing amount of bisphenol A (BPA) is being produced and used, then discharged into sewage treatment plants and accumulated in sludge or soil, when the sludge is used as fertilizer. Accumulation of BPA in sludge or soil causes poisoning to the enzyme, which affects the biological treatment of sludge and the circulation and conversion of materials in soil. In this research, effect of BPA on sludge hydrolysis is studied from the respect of concentration and components of soluble organic matter in sludge, using three-dimensional fluorescence spectra...
March 10, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28340347/rejuvenation-by-therapeutic-elimination-of-senescent-cells
#3
Paul Krimpenfort, Anton Berns
In this issue of Cell, Baar et al. show how FOXO4 protects senescent cell viability by keeping p53 sequestered in nuclear bodies, preventing it from inducing apoptosis. Disrupting this interaction with an all-D amino acid peptide (FOXO4-DRI) restores p53's apoptotic role and ameliorates the consequences of senescence-associated loss of tissue homeostasis.
March 23, 2017: Cell
https://www.readbyqxmd.com/read/28340261/effect-of-a-high-concentrate-diet-on-milk-components-and-mammary-health-in-holstein-dairy-cows
#4
Z L Xie, J Zhang, D M Zhang, J F Li, Y H Lin
In order to evaluate the milk yield, milk quality, and health of dairy cows fed a high-concentrate (HC) diet, eight lactating Holstein dairy cattle were randomly assigned to HC or low-concentrate (LC) diet groups and fed for 50 days, and the auto-control studying before and after treatment with the two diets was used. During the experiment, plasma and milk samples were collected and measured. With regard to milk component, HC feeding led to higher milk production (P < 0.05), but significantly lower milk protein percentage (P < 0...
March 22, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28340236/diet-density-during-the-first-week-of-life-effects-on-energy-and-nitrogen-balance-characteristics-of-broiler-chickens
#5
D M Lamot, D Sapkota, P J A Wijtten, I van den Anker, M J W Heetkamp, B Kemp, H van den Brand
This study aimed to determine effects of diet density on growth performance, energy balance, and nitrogen balance characteristics of broiler chickens during the first wk of life. Effects of diet density were studied using a dose-response design consisting of 5 dietary fat levels (3.5, 7.0, 10.5, 14.0, and 17.5%). The relative difference in dietary energy level was used to increase amino acid levels, mineral levels, and the premix inclusion level at the same ratio. Chickens were housed in open-circuit climate respiration chambers from d 0 to 7 after hatch...
March 11, 2017: Poultry Science
https://www.readbyqxmd.com/read/28340036/value-of-multiple-proficiency-test-schema-to-identify-issues-in-amino-acid-quantitation
#6
Yachana Kataria, Terence Law, Roy Peake, Patti Jones, Mark Kellogg
No abstract text is available yet for this article.
March 1, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28339984/the-link-between-phenotype-and-fatty-acid-metabolism-in-advanced-chronic-kidney-disease
#7
Dan-Qian Chen, Hua Chen, Lin Chen, Nosratola D Vaziri, Ming Wang, Xiang-Ri Li, Ying-Yong Zhao
Background.: The kidney plays a central role in elimination of metabolic waste products and regulation of low-molecular weight metabolites via glomerular filtration, tubular secretion and reabsorption. Disruption of these processes results in profound changes in the biochemical milieu of the body fluids, which contribute to complications of chronic kidney disease (CKD) by inducing cytotoxicity and inflammation. Insight into the changes of the composition of metabolites and dysregulation of target genes and proteins enhances the understanding of the pathophysiology of CKD and its complications, and the development of novel therapeutic strategies...
March 1, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28339933/effect-of-heat-stress-on-amino-acid-digestibility-and-transporters-in-meat-type-chickens
#8
W S Habashy, M C Milfort, K Adomako, Y A Attia, R Rekaya, S E Aggrey
The present study was conducted to investigate the effect of heat stress (HS) on performance, digestibility, and molecular transporters of amino acids in broilers. Cobb 500 chicks were raised from hatch till 13 d in floor pens. At d 14, 48 birds were randomly and equally divided between a control group (25°C) and a HS treatment group (35°C). Birds in both treatment classes were individually caged and fed ad libitum on a diet containing 18.7% CP and 3,560 Kcal ME/Kg. Five birds per treatment at one and 12 d post treatment were euthanized and the Pectoralis major (P...
March 2, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339850/allelic-variation-in-tlr4-is-linked-to-resistance-to-salmonella-enteritidis-infection-in-chickens
#9
Peng Li, Huihua Wang, Xingwang Zhao, Zhongyong Gou, Ranran Liu, Yongmei Song, Qinghe Li, Maiqing Zheng, Huanxian Cui, Nadia Everaert, Guiping Zhao, Jie Wen
Salmonella Enteritidis (SE) is a foodborne pathogen that negatively affects both animal and human health. Polymorphisms of the TLR4 gene may affect recognition by Toll-like receptor 4 (TLR4) of bacterial lipopolysaccharide (LPS), leading to differences in host resistance to pathogenic infections. The present study has investigated polymorphic loci of chicken TLR4 (ChTLR4) in ten chicken breeds, electrostatic potentials of mutant structures of TLR4, and a linkage analysis between allelic variation and survival ratio to infection with SE in specific-pathogen-free (SPF) White Leghorns...
March 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339787/molecular-characterization-of-marek-s-disease-virus-in-a-poultry-layer-farm-from-colombia
#10
Sara López-Osorio, Diego Piedrahita, Maria A Espinal-Restrepo, Gloria C Ramírez-Nieto, Venugopal Nair, Susan M Williams, Susan Baigent, César Ventura-Polite, Diego A Aranzazu-Taborda, Jenny J Chaparro-Gutiérrez
Marek's disease ( ) is a lymphoproliferative disease caused by an Alphaherpesvirus, genus Mardivirus , serotype 1 ( Gallid Herpesvirus 2 , GaHV-2) that includes all known pathogenic strains. In addition to Marek's disease virus ( ) serotype 1, the genus includes 2 distinct nonpathogenic serotypes: serotype 2 (GaHV-3) and serotype 3 ( Meleagridis Herpesvirus 1 , MeHV-1) which are used in commercially available vaccines against MD. As a result of vaccination, clinical signs are not commonly observed, and new cases are usually associated with emerging variant strains against which the vaccines are less effective...
February 22, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339760/ultrastructural-immunohistochemical-study-of-l-type-amino-acid-transporter-1-4f2-heavy-chain-in-tumor-microvasculatures-of-n-butyl-n-4-hydroxybutyl-nitrosamine-bbn-induced-rat-bladder-carcinoma
#11
Eisuke Kume, Tomoko Mutou, Norio Kansaku, Hitoyuki Takahashi, Michael F Wempe, Masahiro Ikegami, Yoshikatsu Kanai, Hitoshi Endou, Shin Wakui
Angiogenesis is essential for tumor growth, and an enhanced vasculature supplying nutrients and oxygen might reflect malignant potential. L-type amino acid transporter 1 (LAT1/4F2hc) comprises a major nutrient transport system responsible for the Na+-independent transport of large neutral amino acids. Seventy five to seventy eight percent N-butyl-N-(4-hydroxybutyl) nitrosamine-induced rat bladder carcinoma cells showed high LAT1/4F2hc expression. While the intracarcinoma microvasculatures of fenestrated endothelial cells highly expressing LAT1/4F2hc might progressively transport essential amino acids from the microvasculatures to the extracellular matrix, non-fenestrated endothelial cells and pericytes did not...
February 24, 2017: Microscopy
https://www.readbyqxmd.com/read/28339688/an-activity-staining-method-on-filtration-paper-enables-high-throughput-screening-of-temperature-sensitive-and-inactive-mutations-of-rice-%C3%AE-amylase-for-improvement-of-rice-grain-quality
#12
Hiromoto Yamakawa, Rieko Hirai-Kimura, Yuriko Nakata, Masaru Nakata, Masaharu Kuroda, Takeshi Yamaguchi
α-Amylase is a starch-hydrolyzing enzyme (EC 3.2.1.1) indispensable for germination of cereal seeds, but it is also expressed during the ripening stage. Previous studies demonstrated that the enzyme is activated in developing rice seeds under extremely hot weather and triggers a loss of grain quality by hindering the accumulation of storage starch in the endosperm. Since inactive or, preferably, heat-labile α-amylases are preferable for breeding premium rice, we developed a method for rapid screening of inactive and temperature-sensitive mutants of the enzyme by combining the random mutagenesis by error-prone PCR and an on-filter activity test of the recombinant enzyme expressed by Escherichia coli...
February 21, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/28339602/gonadotropin-releasing-hormone-kisspeptin-and-gonadal-steroids-directly-modulate-nucleobindin-2-nesfatin-1-in-murine-hypothalamic-gonadotropin-releasing-hormone-neurons-and-gonadotropes%C3%A2
#13
A Hatef, S Unniappan
Neuroendocrine regulation of metabolism and reproduction are tightly interlinked. Nesfatin-1 is an 82 amino acid metabolic peptide derived from nucleobindin-2 (NUCB2). NUCB2 mRNA and protein significantly increase in the hypothalamus of rats during puberty-to-adult transition. Administration of nesfatin-1 modulates circulating LH and testosterone in male rats. However, whether nesfatin-1 acts directly on neurons and gonadotropes remain unknown. In addition, whether reproductive hormones of the hypothalamo-pituitary gonadal axis modulate NUCB2/nesfatin-1 is unclear...
January 28, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28339482/a-genome-wide-identification-and-analysis-of-the-dyw-deaminase-genes-in-the-pentatricopeptide-repeat-gene-family-in-cotton-gossypium-spp
#14
Bingbing Zhang, Guoyuan Liu, Xue Li, Liping Guo, Xuexian Zhang, Tingxiang Qi, Hailin Wang, Huini Tang, Xiuqin Qiao, Jinfa Zhang, Chaozhu Xing, Jianyong Wu
The RNA editing occurring in plant organellar genomes mainly involves the change of cytidine to uridine. This process involves a deamination reaction, with cytidine deaminase as the catalyst. Pentatricopeptide repeat (PPR) proteins with a C-terminal DYW domain are reportedly associated with cytidine deamination, similar to members of the deaminase superfamily. PPR genes are involved in many cellular functions and biological processes including fertility restoration to cytoplasmic male sterility (CMS) in plants...
2017: PloS One
https://www.readbyqxmd.com/read/28339398/n-terminal-fragments-of-huntingtin-longer-than-residue-170-form-visible-aggregates-independently-to-polyglutamine-expansion
#15
Moore Z Chen, Sue-Ann Mok, Angelique R Ormsby, Paul J Muchowski, Danny M Hatters
BACKGROUND: A hallmark of Huntington's disease is the progressive aggregation of full length and N-terminal fragments of polyglutamine (polyQ)-expanded Huntingtin (Htt) into intracellular inclusions. The production of N-terminal fragments appears important for enabling pathology and aggregation; and hence the direct expression of a variety of N-terminal fragments are commonly used to model HD in animal and cellular models. OBJECTIVE: It remains unclear how the length of the N-terminal fragments relates to polyQ - mediated aggregation...
March 22, 2017: Journal of Huntington's Disease
https://www.readbyqxmd.com/read/28339214/muscle-protein-signaling-in-c2c12-cells-is-stimulated-to-a-similar-degree-by-diverse-commercial-food-protein-sources-and-experimental-soy-protein-hydrolysates
#16
David A Roeseler, Nancy J McGraw, Dustie N Butteiger, Naina Shah, Janine Hall-Porter, Ratna Mukherjea, Elaine Susan Krul
Dietary protein stimulates muscle protein synthesis and is essential for muscle health. We developed a screening assay using C2C12 mouse muscle cells to assess the relative abilities of diverse commercial proteins sources and experimental soy protein hydrolysates (ESH), after simulated gut digestion (SGD), to activate the mechanistic target of rapamycin complex I (mTORC1) muscle protein synthesis signaling pathway (p70S6K(Thr389) phosphorylation). Activation of mTORC1 was expressed as a percentage of a maximal insulin response...
March 24, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28339206/utilizing-electron-spin-echo-envelope-modulation-to-distinguish-between-the-local-secondary-structures-of-an-%C3%AE-helix-and-an-amphipathic-310-helical-peptide
#17
Lauren Bottorf, Sophia Rafferty, Indra Dev Sahu, Robert M McCarrick, Gary A Lorigan
Electron Spin Echo Envelope Modulation (ESEEM) spectroscopy was used to distinguish between the local secondary structures of an α-helix and a 310-helix. Previously, we have shown that ESEEM spectroscopy in combination with site-directed spin labeling (SDSL) and 2H-labeled amino acids (i) can probe the local secondary structure of α-helices, resulting in an obvious deuterium modulation pattern, where i+4 positions generally show larger 2H ESEEM peak intensities than i+3 positions. Here, we have hypothesized that due to the unique turn periodicities of an α-helix (3...
March 24, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28339033/role-of-tropomyosin-in-silkworm-allergy
#18
Kyoung Yong Jeong, In-Soo Han, June Yong Lee, Kyung Hee Park, Jae-Hyun Lee, Jung-Won Park
Silkworm pupae are widely consumed in Asian countries and allergic reactions following consumption have been described. However, false‑positive responses in skin prick allergy tests or non‑specific immunoglobulin E (IgE) responses to total extract of silkworm pupa make diagnosis difficult. Although improved allergy diagnosis is required, molecular characterization of silkworm allergens has not been performed to date, except for Bomb m 1, an arginine kinase. This study aimed to evaluate the allergenicity of tropomyosin, a well‑established invertebrate pan‑allergen, from silkworm pupa...
March 24, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28338926/nitrogen-controlled-intra-and-interspecific-competition-between-populus-purdomii-and-salix-rehderiana-drive-primary-succession-in-the-gongga-mountain-glacier-retreat-area
#19
Mengya Song, Lei Yu, Yonglei Jiang, Yanbao Lei, Helena Korpelainen, Ülo Niinemets, Chunyang Li
In this study, intra- and interspecific competition were investigated in early successional Salix rehderiana Schneider and later-appearing Populus purdomii Rehder under non-fertilized (control) and nitrogen (N)-fertilized conditions in the Hailuogou glacier retreat area. Our aim was to discover whether N is a key factor in plant-plant competition and whether N drives the primary succession process in a glacier retreat area. We analyzed differences in responses to intra- and interspecific competition and N fertilization between P...
March 3, 2017: Tree Physiology
https://www.readbyqxmd.com/read/28338876/subcellular-localization-of-arabidopsis-arogenate-dehydratases-suggests-novel-and-non-enzymatic-roles
#20
Crystal D Bross, Travis R Howes, Sara Abolhassani Rad, Ornela Kljakic, Susanne E Kohalmi
Arogenate dehydratases (ADTs) catalyze the final step in phenylalanine biosynthesis in plants. The Arabidopsis thaliana genome encodes a family of six ADTs capable of decarboxylating/dehydrating arogenate into phenylalanine. Using cyan fluorescent protein (CFP)-tagged proteins, the subcellular localization patterns of all six A. thaliana ADTs were investigated in intact Nicotiana benthamiana and A. thaliana leaf cells. We show that A. thaliana ADTs localize to stroma and stromules (stroma-filled tubules) of chloroplasts...
March 10, 2017: Journal of Experimental Botany
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