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https://www.readbyqxmd.com/read/29341462/dna-origami-scaffolds-as-templates-for-functional-tetrameric-kir3-k-channels
#1
Tatsuki Kurokawa, Shigeki Kiyonaka, Eiji Nakata, Masayuki Endo, Shohei Koyama, Emiko Mori, Nam Ha Tran, Huyen Dinh, Yuki Suzuki, Kumi Hidaka, Masaaki Kawata, Chikara Sato, Hiroshi Sugiyama, Takashi Morii, Yasuo Mori
In native systems, scaffolding proteins play important roles in assembling proteins into complexes to transduce signals. This concept is yet to be incorporated in assembling functional transmembrane protein complexes in artificial systems. To address this issue, DNA origami has potentiality to serve as scaffolds that arrange proteins at specific positions in complexes. Here, we report that Kir3 K+ channel proteins are assembled through zinc-finger protein (ZFP)-adaptors at specific locations on DNA origami scaffolds...
January 16, 2018: Angewandte Chemie
https://www.readbyqxmd.com/read/29341186/-chaturthy-fingers-caused-by-hibiscus-rosasinensis
#2
Vijay Zawar, Snehal Daga, Manoj Pawar, Shrikant Kumavat
No abstract text is available yet for this article.
February 2018: Contact Dermatitis
https://www.readbyqxmd.com/read/29340223/yabby3-orthologous-genes-in-wild-tomato-species-structure-variability-and-expression
#3
M A Filyushin, M A Slugina, A V Shchennikova, E Z Kochieva
Evolution of the genes encoding YABBY transcription factors is believed to be one of the key reasons for flat leaf emergence from the radially symmetrical stem and gynoecium diversity. YABBY genes determine the identity of the abaxial surface of all aboveground lateral organs in seed plants. In the present study, complete sequences of YABBY3-orthologous genes were identified and characterized in 13 accessions of cultivated and wild tomato species with diverse morphophysiology of leaves, flowers, and fruits...
October 2017: Acta Naturae
https://www.readbyqxmd.com/read/29339729/ecotropic-viral-integration-site-1-promotes-metastasis-independent-of-epithelial-mesenchymal-transition-in-colon-cancer-cells
#4
Kasturi Bala Nayak, I S Sajitha, T R Santhosh Kumar, Soumen Chakraborty
The most indecipherable component of solid cancer is the development of metastasis which accounts for more than 90% of cancer-related mortalities. A developmental program termed epithelial-mesenchymal transition (EMT) has also been shown to play a critical role in promoting metastasis in epithelium-derived solid tumors. By analyzing publicly available microarray datasets, we observed that ecotropic viral integration site 1 (EVI1) correlates negatively with SLUG, a master regulator of EMT. This correlation was found to be relevant as we demonstrated that EVI1 binds to SLUG promoter element directly through the distal set of zinc fingers and downregulates its expression...
January 16, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29339621/highly-enhanced-adsorption-of-congo-red-by-functionalized-finger-citron-leaf-based-porous-carbon
#5
Gui-Hua Zhao, Yao-Yao Fang, Wei Dai, Na Ma
A novel high-performance porous carbon material, lanthanum(III)-doped finger-citron-leaf-based porous carbon (La/FPC), has been synthesized and used as an adsorbent for anion dye Congo red (CR). The La/FPC was characterized by nitrogen adsorption and desorption isotherms, scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The adsorption performance of CR by the FPC and La/FPC composites with different contents of lanthanum(III) were evaluated in fixed-bed breakthrough experiments and batch tests at room temperature (298 K)...
January 2018: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/29339326/surround-inhibition-in-the-primary-motor-cortex-is-task-specifically-modulated-in-non-professional-musicians-but-not-in-healthy-controls-during-real-piano-playing
#6
Gonzalo Márquez, Martin Keller, Jesper Lundbye-Jensen, Wolfgang Taube
Research has indicated that at the onset of a finger movement, unwanted contractions of adjacent muscles are prevented by inhibiting the cortical areas representing these muscles. This so-called surround inhibition (SI) seems relevant for the performance of selective finger movements but may not be necessary for tasks involving functional coupling between different finger muscles. Therefore, the present study compared SI between isolated finger movement and complex selective finger movements while playing a three-finger sequence on the piano in 9 non-professional musicians and 10 untrained control participants...
January 12, 2018: Neuroscience
https://www.readbyqxmd.com/read/29339121/hsf1-in-association-with-morc2-downregulates-argbp2-via-the-prc2-family-in-gastric-cancer-cells
#7
Yuxin Tong, Yan Li, Hui Gu, Chunyu Wang, Funan Liu, Yangguang Shao, Feng Li
Arg Kinase-binding protein 2 (ArgBP2) is considered to be a scaffold protein that coordinates multiple signaling pathways converging on cell adhesion and actin cytoskeletal organization. It also plays an important role in blocking cancer metastasis as a potential tumor suppressor. However, its regulation mechanisms in tumor migration, especially in gastric cancer, are not fully understood. Here, we identified an ArgBP2 enhancer and showed that heat shock factor 1 (HSF1) directly interacted with microrchidia CW-type zinc finger 2 (MORC2) and bound to the enhancer of ArgBP2...
January 12, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29338138/could-cryopreserved-human-semen-samples-be-stored-at-80%C3%A2-c
#8
Carlos R Vaz, Tamara Lamim, Rafael A Salvador, Anna P B Batschauer, Vera Lucia L Amaral, David Til
OBJECTIVE: To evaluate storage time effects in cryopreserved human semen samples, kept in the freezer at a controlled temperature of -80°C, on sperm viability after thawing. METHODS: We used 20 semen samples. Each sample was cryopreserved in 10 fingers, which were divided into five groups: one group was kept in cryogenic canisters throughout the experiment(control), and four groups were kept in a VIP Ultra Low MDF-U76V- PE freezer, with the temperature set at -80°C, for 24, 48, 72 and 96 hours, respectively...
January 17, 2018: JBRA Assisted Reproduction
https://www.readbyqxmd.com/read/29337144/early-activation-of-egr-1-promotes-neuroinflammation-and-dopaminergic-neurodegeneration-in-an-experimental-model-of-parkinson-s-disease
#9
Qing Yu, Qiaoying Huang, Xiaoxiao Du, Shao Xu, Mingtao Li, Shanshan Ma
The progressive loss of dopaminergic neurons in the substantia nigra pars compacta (SNpc) is one of the hallmarks of Parkinson's disease (PD). Neuroinflammation has been proposed to contributes to the progressive nature of the disease. Early growth response-1 (Egr-1), a zinc finger transcription factor, has been shown to have a crucial role in both neuronal death and the inflammatory response. However, whether and how Egr-1 is involved in the pathogenesis of PD has not been investigated. Using the subacute 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) mouse model of PD, we identified early peak induction of Egr-1 in the SNpc but not in the striatum...
January 11, 2018: Experimental Neurology
https://www.readbyqxmd.com/read/29337009/coherence-and-interlimb-force-control-effects-of-visual-gain
#10
Nyeonju Kang, James H Cauraugh
Neural coupling across hemispheres and homologous muscles often appears during bimanual motor control. Force coupling in a specific frequency domain may indicate specific bimanual force coordination patterns. This study investigated coherence on pairs of bimanual isometric index finger force while manipulating visual gain and task asymmetry conditions. We used two visual gain conditions (low and high gain = 8 and 512 pixels/N), and created task asymmetry by manipulating coefficient ratios imposed on the left and right index finger forces (0...
January 11, 2018: Neuroscience Letters
https://www.readbyqxmd.com/read/29336484/epigenetic-regulation-of-megakaryocytic-and-erythroid-differentiation-by-phf2-histone-demethylase
#11
Jichun Yang, Jing Ma, Yu Xiong, Yanlin Wang, Kaiyue Jin, Wenjun Xia, Qing Chen, Jianbo Huang, Jin Zhang, Nan Jiang, Shayi Jiang, Duan Ma
Plant homeodomain finger 2 (PHF2) is a JmjC family histone demethylase that demethylates H3K9me2, a repressive gene marker. PHF2 was found to play a role in the differentiation of several tissue types such as osteoblast and adipocyte differentiation. We report here that PHF2 plays a role in the epigenetic regulation of megakaryocytic (MK) and erythroid differentiation. We investigated PHF2 expression during MK and erythroid differentiation in K562 and human CD34+ progenitor (hCD34+ ) cells. Our data demonstrate that PHF2 expression is down-regulated during megakaryopoiesis and erythropoiesis...
January 16, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29336398/concomitant-neurogenic-and-vascular-thoracic-outlet-syndrome-due-to-multiple-exostoses
#12
Hosseinali Abdolrazaghi, Azade Riyahi, Morteza Taghavi, Pezhman Farshidmehr, Abolfazl Mohammadbeigi
We report a rare case of multiple hereditary exostosis where patient presented with bilateral base of neck exostoses with concurrent compression of brachial plexus and subclavian artery and vein. The patient was a young 26-year-old woman with chief complaints of pain in the left upper extremity, paresthesia in the left ring and little finger, and weakness in hand movement and grip. On referral, history, physical examination, radiological imaging, and electrodiagnostic tests evaluated the patient. Due to severe pain and disability in performing routine activities, surgical intervention was necessary...
January 2018: Annals of Cardiac Anaesthesia
https://www.readbyqxmd.com/read/29336356/tcf7l1-promotes-transcription-of-kruppel-likefactor-4-during-xenopus-embryogenesis
#13
Qing Cao, Yan Shen, Wei Zheng, Hao Liu, Chen Liu
Kruppel-like factor 4 (Klf4) is a zinc finger transcriptionfactor and plays crucial roles in Xenopus embryogenesis. However, its regulation during embryogenesis is stillunclear. Here, we report that Tcf7l1, a key downstream transducerof the Wnt signaling pathway, could promote Klf4 transcription and stimulate Klf4 promoter activity in early Xenopus embryos. Furthermore, cycloheximide treatmentshowed a direct effect on Klf4 transcriptionfacilitated by Tcf7l1. Moreover, the dominant negative form of Tcf7l1(dnTcf7l1), which lacks N-terminusof the β-catenin binding motif, could still activate Klf4 transcription, suggesting that thisregulation is Wnt/β-catenin independent...
November 1, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/29335750/performance-drifts-in-two-finger-cyclical-force-production-tasks-performed-by-one-and-two-actors
#14
Fariba Hasanbarani, Sasha Reschechtko, Mark L Latash
We explored changes in the cyclical two-finger force performance task caused by turning visual feedback off performed either by the index and middle fingers of the dominant hand or by two index fingers of two persons. Based on an earlier study, we expected drifts in finger force amplitude and midpoint without a drift in relative phase. The subjects performed two rhythmical tasks at 1 Hz while paced by an auditory metronome. One of the tasks required cyclical changes in total force magnitude without changes in the sharing of the force between the two fingers...
January 15, 2018: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/29335584/genome-wide-identification-and-characterization-of-spl-transcription-factor-family-and-their-evolution-and-expression-profiling-analysis-in-cotton
#15
Caiping Cai, Wangzhen Guo, Baohong Zhang
Plant specific transcription factors, SQUAMOSA promoter-binding protein-like (SPL), are involved in many biological processes. However, no systematical study has been reported in cotton. In this study, a total of 177 SPL genes were identified, including 29, 30, 59 and 59 SPLs in Gossypium arboreum, G. raimondii, G. barbadense, and G. hirsutum, respectively. These SPL genes were classified into eight phylogenetical groups. The gene structure, conserved motif, and clustering were highly conserved within each orthologs...
January 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29335348/the-dorsal-4-finger-technique-a-novel-method-to-examine-metacarpophalangeal-joints-in-patients-with-rheumatoid-arthritis
#16
Mohammed A Omair, Pooneh Akhavan, Ali Naraghi, Shikha Mittoo, Juan Xiong, Deborah Weber, Daming Lin, Melissa Weber, Edward C Keystone
OBJECTIVE: To describe the dorsal 4-finger technique (DFFT) in examining metacarpophalangeal (MCP) joints of patients with rheumatoid arthritis (RA) and compare it to the traditional 2-finger technique (TFT) using ultrasound (US) as a gold standard. METHODS: Four rheumatologists evaluated 180 MCP joints of 18 patients with RA. All patients underwent US for greyscale (GSUS) and power Doppler US (PDUS). Agreements between rheumatologists, the 2 techniques, and US were evaluated using Cohen κ and the first-order agreement coefficient (AC1) κ methods...
January 15, 2018: Journal of Rheumatology
https://www.readbyqxmd.com/read/29335182/microstructures-and-performances-of-pegylated-polysulfone-membranes-from-an-in-situ-synthesized-solution-via-vapor-induced-phase-separation-approach
#17
Li-Jing Zhu, Hai-Ming Song, Gang Wang, Zhi-Xiang Zeng, Cun-Ting Zhao, Qun-Ji Xue, Xiao-Ping Guo
In situ pegylated (PEGylated) microporous membranes have been extensively reported using poly(ethylene glycol) (PEG)-based polymers as blending additives. Alternatively, free standing PEGylated polysulfone (PSf) membranes with excellent hydrophilicity and antifouling ability were directly fabricated from polysulfone/poly(ethylene glycol) methyl ether methacrylate (PSf/PEGMA) solutions after in situ cross-linking polymerization without any treatment via vapor induced phase separation (VIPS) process for the first time...
January 9, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29335068/imprinted-gene-zinc-finger-protein-127-is-a-novel-regulator-of-master-pluripotency-transcription-factor-oct4
#18
Yoo-Wook Kwon, Hyo-Suk Ahn, Joo-Young Park, Han-Mo Yang, Hyun-Jai Cho, Hyo-Soo Kim
Induced pluripotent stem cells (iPSCs) show great promise for replacing current stem cell therapies in the field of regenerative medicine. However, the original method for cellular reprogramming, involving four exogenous transcription factors, is characterized by low efficiency. Here, we focused on using epigenetic modifications to enhance the reprogramming efficiency. We hypothesized that there would be a new reprogramming factor involved in DNA demethylation, acting on the promoters of pluripotency-related genes...
January 16, 2018: BMB Reports
https://www.readbyqxmd.com/read/29335010/acute-intestinal-obstruction-due-to-extrinsic-compression-by-previa-myoma-and-ectopic-pregnancy-a-case-report
#19
Harissou Adamou, Ibrahim Amadou Magagi, Souleymane Oumarou Garba, Oumarou Habou
BACKGROUND: Acute intestinal obstruction during pregnancy is a rare digestive surgical emergency with significant maternal and fetal mortality. Diagnosis is difficult, often delaying the management. Here, we report an exceptional association of mechanical acute intestinal obstruction due to compression by previa uterine leiomyoma, and a ruptured ectopic pregnancy. CASE PRESENTATION: This is the case report of a 43-year-old primiparous black woman from a rural area, who was admitted to the surgical emergency department for acute intestinal obstruction...
January 16, 2018: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/29334383/a-simple-method-for-determining-the-ligand-affinity-toward-a-zinc-enzyme-model-by-using-a-tamra-tamra-interaction
#20
Hiroshi Kusamoto, Akio Shiba, Masaya Tsunehiro, Haruto Fujioka, Emiko Kinoshita-Kikuta, Eiji Kinoshita, Tohru Koike
Thiolate coordination to zinc(ii) ions occurs widely in such functional biomolecules as zinc enzymes or zinc finger proteins. Here, we introduce a simple method for determining the affinity of ligands toward the zinc-enzyme active-center model tetramethylrhodamine (TAMRA)-labeled 1,4,7,10-tetraazacyclododecane (cyclen)-zinc(ii) complex (TAMRA-ZnL). The 1 : 1 complexation of TAMRA-labeled cysteine (TAMRA-Cys) with TAMRA-ZnL (each at 2.5 μM), in which the TAMRA moieties approach one another closely, induces remarkable changes in the visible absorption and fluorescence spectra at pH 7...
January 15, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
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