نتایج جستجو برای: drilling rig

تعداد نتایج: 17159  

Journal: :Advanced engineering research 2021

Introduction. Currently, Russia has adopted a course towards the creation of intelligent machines and equipment. The same holds for mobile technological road construction public utilities. Therefore, design this type actuators with self-adaptation function is critical task. Materials Methods. A device equipped hydraulic drive to load coordination kinematic power parameters principal motion feed...

Journal: :Cell 2010
Wenwen Zeng Lijun Sun Xiaomo Jiang Xiang Chen Fajian Hou Anirban Adhikari Ming Xu Zhijian J. Chen

RIG-I detects invading viral RNA and activates the transcription factors NF-kappaB and IRF3 through the mitochondrial protein MAVS. Here we show that RNA bearing 5'-triphosphate strongly activates the RIG-I-IRF3 signaling cascade in a reconstituted system composed of RIG-I, mitochondria, and cytosol. Activation of RIG-I requires not only RNA but also polyubiquitin chains linked through lysine 6...

Journal: :The Journal of Experimental Medicine 2008
Hiroki Kato Osamu Takeuchi Eriko Mikamo-Satoh Reiko Hirai Tomoji Kawai Kazufumi Matsushita Akane Hiiragi Terence S. Dermody Takashi Fujita Shizuo Akira

The ribonucleic acid (RNA) helicases retinoic acid-inducible gene-I (RIG-I) and melanoma differentiation-associated gene 5 (MDA5) recognize distinct viral and synthetic RNAs, leading to the production of interferons. Although 5'-triphosphate single-stranded RNA is a RIG-I ligand, the role of RIG-I and MDA5 in double-stranded (ds) RNA recognition remains to be characterized. In this study, we sh...

2013
Hiroyuki Oshiumi Moeko Miyashita Misako Matsumoto Tsukasa Seya

The innate immune system is essential for controlling viral infections, but several viruses have evolved strategies to escape innate immunity. RIG-I is a cytoplasmic viral RNA sensor that triggers the signal to induce type I interferon production in response to viral infection. RIG-I activation is regulated by the K63-linked polyubiquitin chain mediated by Riplet and TRIM25 ubiquitin ligases. T...

Journal: :Earth and Planetary Science Letters 2021

Coring, geophysical logging, and in-situ temperature measurements were performed with the MARUM-MeBo200 seafloor rig to characterize gas hydrate occurrences in sediments of Danube deep sea fan, off Romania, Black Sea. The new drilling data showed no evidence for significant saturations within but presence free at depth bottom-simulating reflector (BSR). In-situ core-derived geochemical suggest ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2016
Ling Xu Dandan Yu Yu Fan Li Peng Yong Wu Yong-Gang Yao

The function of the RIG-I-like receptors (RLRs; including RIG-I, MDA5, and LGP2) as key cytoplasmic sensors of viral pathogen-associated molecular patterns (PAMPs) has been subjected to numerous pathogenic challenges and has undergone a dynamic evolution. We found evolutionary evidence that RIG-I was lost in the Chinese tree shrew lineage. Along with the loss of RIG-I, both MDA5 (tMDA5) and LGP...

2013
Andrew Kohlway Dahai Luo David C Rawling Steve C Ding Anna Marie Pyle

Retinoic acid-inducible gene-I (RIG-I) is an intracellular RNA sensor that activates the innate immune machinery in response to infection by RNA viruses. Here, we report the crystal structure of distinct conformations of a RIG-I:dsRNA complex, which shows that HEL2i-mediated scanning allows RIG-I to sense the length of RNA targets. To understand the implications of HEL2i scanning for catalytic ...

Journal: :Journal of virology 2013
Meng-Tong Li Wei Di Hao Xu Yong-Kang Yang Hai-Wei Chen Fei-Xiong Zhang Zhong-He Zhai Dan-Ying Chen

Retinoic acid-inducible gene I (RIG-I) is a key sensor for recognizing nucleic acids derived from RNA viruses and triggers beta interferon (IFN-β) production. Because of its important role in antiviral innate immunity, the activity of RIG-I must be tightly controlled. Here, we used yeast two-hybrid screening to identify a SEC14 family member, SEC14L1, as a RIG-I-associated negative regulator. T...

2016
Ryo Hayakari Tomoh Matsumiya Fei Xing Hidemi Yoshida Makoto Hayakari Tadaatsu Imaizumi

The cytoplasmic viral sensor retinoic acid-inducible gene-I (RIG-I), which is also known as an IFN-stimulated gene (ISG), senses viral RNA to activate antiviral signaling. It is therefore thought that RIG-I is regulated in a STAT1-dependent manner. Although RIG-I-mediated antiviral signaling is indispensable for the induction of an appropriate adaptive immune response, the mechanism underlying ...

2012
Sun-Young Hwang Hwa-Young Sun Kwang-Hoon Lee Byung-Ha Oh Yu Jin Cha Byeang Hyean Kim Joo-Yeon Yoo

RIG-I is a cytosolic receptor for non-self RNA that mediates immune responses against viral infections through IFNα/β production. In an attempt to identify novel tools that modulate IFNα/β production, we used SELEX technology to screen RNA aptamers that specifically target RIG-I protein. Most of the selected RIG-I aptamers contained polyU motifs in the second half regions that played critical r...

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