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https://www.readbyqxmd.com/read/28103409/zea-mays-fe-deficiency-related-4-zmfdr4-functions-as-an-iron-transporter-in-the-plastids-of-monocots
#1
Xiu-Yue Zhang, Xi Zhang, Qi Zhang, Xiao-Xi Pan, Luo-Chen Yan, Xiao-Juan Ma, Wei-Zhong Zhao, Xiao-Ting Qi, Li-Ping Yin
Iron (Fe)-homeostasis in the plastids is closely associated with Fe transport proteins that prevent Fe from occurring in its toxic free ionic forms. However, the number of known protein families related to Fe transport in the plastids (about 5) and the function of iron in non-green plastids is limited. In the present study, we report the functional characterization of Zea mays Fe deficiency-related 4 (ZmFDR4), which was isolated from a differentially expressed clone of a cDNA library of Fe deficiency-induced maize roots...
January 19, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28103282/two-novel-vesicle-inducing-proteins-in-plastids-1-genes-cloned-and-characterized-in-triticum-urartu
#2
Fei Gao, Bo Chen, Juan Jiao, Lijia Jia, Cuimin Liu
Vesicle-inducing protein in plastids 1 (Vipp1) is thought to play an important role both in thylakoid biogenesis and chloroplast envelope maintenance during stress. Vipp1 is conserved in photosynthetic organisms and forms a high homo-oligomer complex structure that may help sustain the membrane integrity of chloroplasts. This study cloned two novel VIPP1 genes from Triticum urartu and named them TuVipp1 and TuVipp2. Both proteins shared high identity with the homologous proteins AtVipp1 and CrVipp1. TuVipp1 and TuVipp2 were expressed in various organs of common wheat, and both genes were induced by light and various stress treatments...
2017: PloS One
https://www.readbyqxmd.com/read/28103259/characterization-and-genetic-variation-of-vibrio-cholerae-isolated-from-clinical-and-environmental-sources-in-thailand
#3
Achiraya Siriphap, Pimlapas Leekitcharoenphon, Rolf S Kaas, Chonchanok Theethakaew, Frank M Aarestrup, Orasa Sutheinkul, Rene S Hendriksen
Cholera is still an important public health problem in several countries, including Thailand. In this study, a collection of clinical and environmental V. cholerae serogroup O1, O139, and non-O1/non-O139 strains originating from Thailand (1983 to 2013) was characterized to determine phenotypic and genotypic traits and to investigate the genetic relatedness. Using a combination of conventional methods and whole genome sequencing (WGS), 78 V. cholerae strains were identified. WGS was used to determine the serogroup, biotype, virulence, mobile genetic elements, and antimicrobial resistance genes using online bioinformatics tools...
2017: PloS One
https://www.readbyqxmd.com/read/28103239/identifying-t-cell-receptors-from-high-throughput-sequencing-dealing-with-promiscuity-in-tcr%C3%AE-and-tcr%C3%AE-pairing
#4
Edward S Lee, Paul G Thomas, Jeff E Mold, Andrew J Yates
Characterisation of the T cell receptors (TCR) involved in immune responses is important for the design of vaccines and immunotherapies for cancer and autoimmune disease. The specificity of the interaction between the TCR heterodimer and its peptide-MHC ligand derives largely from the juxtaposed hypervariable CDR3 regions on the TCRα and TCRβ chains, and obtaining the paired sequences of these regions is a standard for functionally defining the TCR. A brute force approach to identifying the TCRs in a population of T cells is to use high-throughput single-cell sequencing, but currently this process remains costly and risks missing small clones...
January 19, 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28103141/modification-of-the-genome-of-domestic-animals
#5
Samantha N Lotti, Kathryn M Polkoff, Marcello Rubessa, Matthew B Wheeler
In the past few years, new technologies have arisen that enable higher efficiency of gene editing. With the increase ease of using gene editing technologies, it is important to consider the best method for transferring new genetic material to livestock animals. Microinjection is a technique that has proven to be effective in mice but is less efficient in large livestock animals. Over the years, a variety of methods have been used for cloning as well as gene transfer including; nuclear transfer, sperm mediated gene transfer (SMGT), and liposome-mediated DNA transfer...
January 19, 2017: Animal Biotechnology
https://www.readbyqxmd.com/read/28103104/characterization-and-molecular-subtyping-of-shiga-toxin-producing-escherichia-coli-strains-in-butcher-shops
#6
Victoria Brusa, Magdalena Costa, Alejandra Londero, Gerardo A Leotta, Lucía Galli
Shiga toxin-producing Escherichia coli (STEC) are important emerging foodborne human pathogens. Ruminants are the main animal reservoir of STEC currently known, and meat can become contaminated at different stages of the production chain. The aim of this work was to subtype and establish the epidemiological relatedness of non-O157 STEC strains isolated from ground beef and the environment in butcher shops before (evaluation stage, 2010-2011 period) and after (verification stage, 2013) implementing improvement actions...
January 19, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28102682/identification-of-serratane-synthase-gene-from-the-fern-lycopodium-clavatum
#7
Yusuke Saga, Takeshi Araki, Hiroshi Araya, Kazuki Saito, Mami Yamazaki, Hideyuki Suzuki, Tetsuo Kushiro
Ferns are known to produce onoceroids including onoceranes and serratanes having unusual structures among triterpenes. From the fern Lycopodium clavatum, a novel onoceroid synthase gene was cloned that showed high sequence identity with a previously identified α-onocerin synthase. Functional analysis by coexpression with pre-α-onocerin synthase in yeast led to the production of tohogenol and serratenediol. The result suggested that serratanes are directly biosynthesized from pre-α-onocerin and not from α-onocerin as previously assumed...
January 19, 2017: Organic Letters
https://www.readbyqxmd.com/read/28102191/a-broadly-protective-therapeutic-antibody-against-influenza-b-virus-with-two-mechanisms-of-action
#8
Ning Chai, Lee R Swem, Summer Park, Gerald Nakamura, Nancy Chiang, Alberto Estevez, Rina Fong, Lynn Kamen, Elviza Kho, Mike Reichelt, Zhonghua Lin, Henry Chiu, Elizabeth Skippington, Zora Modrusan, Jeremy Stinson, Min Xu, Patrick Lupardus, Claudio Ciferri, Man-Wah Tan
Influenza B virus (IBV) causes annual influenza epidemics around the world. Here we use an in vivo plasmablast enrichment technique to isolate a human monoclonal antibody, 46B8 that neutralizes all IBVs tested in vitro and protects mice against lethal challenge of all IBVs tested when administered 72 h post infection. 46B8 demonstrates a superior therapeutic benefit over Tamiflu and has an additive antiviral effect in combination with Tamiflu. 46B8 binds to a conserved epitope in the vestigial esterase domain of hemagglutinin (HA) and blocks HA-mediated membrane fusion...
January 19, 2017: Nature Communications
https://www.readbyqxmd.com/read/28102033/ten-novel-mhc-dpb1-alleles-identified-in-tibetan-macaque-macaca-thibetana
#9
Y Y Zhou, Y F Yao, Q Y Ni, M W Zhang, H L Xu
Ten novel MHC-DPB1 alleles of Tibetan macaque, were identified by cloning and sequencing.
February 2017: HLA
https://www.readbyqxmd.com/read/28101904/functional-analysis-of-the-circadian-clock-gene-timeless-in-tribolium-castaneum
#10
Chengjun Li, Xiaopei Yun, Xiaojuan Yu, Bin Li
Circadian rhythms are endogenous oscillations with a period of about 24 h driven by a circadian clock. So far, the variable oscillators were designed in insects. To explore the circadian clock of Tribolium castaneum, we have cloned the clock gene timeless (Tctimeless). Its open reading frame is 3240 bp in length and consists of 10 exons. Tctimeless is highly expressed in the late pupal stage. Tissue-specific expression analysis in late adult stages revealed high expression of Tctimeless in the head, epidermis, fat body and accessory glands...
January 19, 2017: Insect Science
https://www.readbyqxmd.com/read/28101851/importance-of-radioactive-labelling-to-elucidate-inositol-polyphosphate-signalling
#11
REVIEW
Miranda S C Wilson, Adolfo Saiardi
Inositol polyphosphates, in their water-soluble or lipid-bound forms, represent a large and multifaceted family of signalling molecules. Some inositol polyphosphates are well recognised as defining important signal transduction pathways, as in the case of the calcium release factor Ins(1,4,5)P3, generated by receptor activation-induced hydrolysis of the lipid PtdIns(4,5)P2 by phospholipase C. The birth of inositol polyphosphate research would not have occurred without the use of radioactive phosphate tracers that enabled the discovery of the "PI response"...
February 2017: Topics in Current Chemistry (Journal)
https://www.readbyqxmd.com/read/28101704/molecular-cloning-and-gene-protein-expression-of-fat-cd36-from-grass-carp-ctenopharyngodon-idella-and-the-regulation-of-its-expression-by-dietary-energy
#12
Juan Tian, Wei Liu, Weihua Gao, Fan Wu, Lijuan Yu, Xing Lu, Chang-Geng Yang, Ming Jiang, Hua Wen
Fatty acid translocase/cluster of differentiation 36 (FAT/CD36) functions as a membrane long-chain fatty acid transporter in various tissues in land animals. Not much is known about the CD36 molecule in teleost fish. Therefore, we studied CD36 in grass carp (Ctenopharyngodon idella, ciCD36). The full-length complementary DNA sequence of ciCD36 was 1976 bp, with an ORF of 468 amino acids, which had high sequence similarity to the CD36 of common carp. The messenger RNA (mRNA) expression of ciCD36 was high in the intestine, heart, liver, visceral tissue, and brain, but absent in the kidney...
January 18, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28101536/host-range-restriction-of-insect-specific-flaviviruses-occurs-at-several-levels-of-the-viral-life-cycle
#13
Sandra Junglen, Marvin Korries, Wolfgang Grasse, Janett Wieseler, Anne Kopp, Kyra Hermanns, Moises León-Juárez, Christian Drosten, Beate Mareike Kümmerer
The genus Flavivirus contains emerging arthropod-borne viruses (arboviruses) infecting vertebrates, as well as insect-specific viruses (ISVs) (i.e., viruses whose host range is restricted to insects). ISVs are evolutionary precursors to arboviruses. Knowledge of the nature of the ISV infection block in vertebrates could identify functions necessary for the expansion of the host range toward vertebrates. Mapping of host restrictions by complementation of ISV and arbovirus genome functions could generate knowledge critical to predicting arbovirus emergence...
January 2017: MSphere
https://www.readbyqxmd.com/read/28101463/development-of-a-novel-human-single-chain-antibody-against-egfrviii-antigen-by-phage-display-technology
#14
Leila Rahbarnia, Safar Farajnia, Hossein Babaei, Jafar Majidi, Bahman Akbari, Shiva Ahdi Khosroshahi
Purpose: EGFRvIII as the most common mutant variant of the epidermal growth factor receptor is resulting from deletion of exons 2-7 in the coding sequence and junction of exons 1 and 8 through a novel glycine residue. EGFRvIII is highly expressed in glioblastoma, carcinoma of the breast, ovary, and lung but not in normal cells. The aim of the present study was identification of a novel single chain antibody against EGFRvIII as a promising target for cancer therapy. Methods: In this study, a synthetic peptide corresponding to EGFRvIII protein was used for screening a naive human scFv phage library...
December 2016: Advanced Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28101269/metagenomic-approaches-to-identify-novel-organisms-from-the-soil-environment-in-a-classroom-setting
#15
Sadia J Rahman, Trevor C Charles, Parjit Kaur
Molecular Microbial Metagenomics is a research-based undergraduate course developed at Georgia State University. This semester-long course provides hands-on research experience in the area of microbial diversity and introduces molecular approaches to study diversity. Students are part of an ongoing research project that uses metagenomic approaches to isolate clones containing 16S ribosomal ribonucleic acid (rRNA) genes from a soil metagenomic library. These approaches not only provide a measure of microbial diversity in the sample but may also allow discovery of novel organisms...
December 2016: Journal of Microbiology & Biology Education: JMBE
https://www.readbyqxmd.com/read/28101202/cadherin-11-expression-is-upregulated-in-invasive-human-breast-cancer
#16
Kamil Pohlodek, Yen Y Tan, Christian F Singer, Daphne Gschwantler-Kaulich
Loss of expression of cadherin-11 protein is correlated with a loss of epithelial phenotype and a gain in tumor cell proliferation and invasion. It has been hypothesized that cadherin-11 may be a molecular marker for a more aggressive subtype of breast cancer. The present study examined the expression of the mesenchymal gene/protein cadherin-11 in malignant, benign and healthy breast cancer samples. A paraffin-embedded tissue microarray of both malignant and benign/healthy breast tumor was used. Clinicopathological parameters, including age, grading, tumor size, hormone receptors and HER2 receptors status were obtained from patient medical records...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28101175/effect-of-mir-146a-and-mir-155-on-cardiac-xenotransplantation
#17
Zhicheng Zhao, Feng Qi, Tong Liu, Weihua Fu
The aim of the present study was to investigate the expression levels of miR-146a and miR-155 in a cardiac xenograft model treated with the immunosuppressant FK506, and to construct lentiviral vectors to further study the roles of miR-146a and miR-155 in cardiac xenotransplantation. Expression levels of miR-146a and miR-155 were examined by quantitative polymerase chain reaction analysis and protein expression of RelA, which is a member of the nuclear factor-κB family, was examined by western blot analysis...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28101158/prevalence-of-carbapenemases-among-high-level-aminoglycoside-resistant-acinetobacter-baumannii-isolates-in-a-university-hospital-in-china
#18
Yanhong Wang, Min Shen, Jingni Yang, Min Dai, Yaowen Chang, Chi Zhang, Guangxin Luan, Baodong Ling, Xu Jia
The prevalence of aminoglycoside resistant enzymes has previously been reported and extended-spectrum β-lactamase among Acinetobacter baumannii. To track the risk of multidrug-resistant A. baumannii, the present study aimed to determine the prevalence of carbapenemases in high-level aminoglycoside resistant A. baumannii over two years. A total of 118 strains of A. baumannii were consecutively collected in the First Affiliated Hospital of Chengdu Medical College, Chengdu, China. These isolates were investigated on the genetic basis of their resistance to aminoglycosides...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28100707/the-rla1-smos1-transcription-factor-functions-with-osbzr1-to-regulate-brassinosteroid-signaling-and-rice-architecture
#19
Shenglong Qiao, Shiyong Sun, Linlin Wang, Zhihua Wu, Chengxiang Li, Xiaoming Li, Tao Wang, Linna Leng, Weisheng Tian, Tiegang Lu, Xuelu Wang
Brassinosteroids (BRs) are plant-specific steroid hormones that control plant growth and development. Recent studies have identified key components of the BR signaling pathway in Arabidopsis thaliana and in rice (Oryza sativa); however, the mechanism of BR signaling in rice, especially downstream of GSK3/SHAGGY-like kinase (GSK2), remains unclear. Here we identified a BR-insensitive rice mutant, reduced leaf angle 1 (rla1), and cloned the corresponding gene. RLA1 was identical to the previously reported SMALL ORGAN SIZE 1 (SMOS1) which was cloned from another allele...
January 18, 2017: Plant Cell
https://www.readbyqxmd.com/read/28100706/oscul3a-negatively-regulates-cell-death-and-immunity-by-degrading-osnpr1-in-rice
#20
Qun-En Liu, Yuese Ning, Yingxin Zhang, Ning Yu, Chunde Zhao, Xiaodeng Zhan, Weixun Wu, Daibo Chen, Xiangjin Wei, Guo-Liang Wang, Shihua Cheng, Liyong Cao
Cullin3-based RING E3 ubiquitin ligases (CRL3), composed of Cullin3 (CUL3), RBX1, and BTB proteins, are involved in plant immunity but the function of CUL3 in the process is largely unknown. Here, we show that rice OsCUL3a is important for the regulation of cell death and immunity. The rice lesion mimic mutant oscul3a displays a significant increase in the accumulation of flg22- and chitin-induced reactive oxygen species, and in pathogenesis-related gene expression as well as resistance to Magnaporthe oryzae and Xanthomonas oryzae pv...
January 18, 2017: Plant Cell
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