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    Crystal structures of the human RNA demethylase Alkbh5 reveal basis for substrate recognition

    Feng, Chong, Liu, Yang, Wang, Guoqiang, Deng, Zengqin, Zhang, Qi, Wu, Wei, Tong, Yufeng, Cheng, Changmei, Chen, Zhongzhou
    The Journal of biological chemistry, 25 April 2014, Vol.289(17), pp.11571-83 [Peer Reviewed Journal]
    MEDLINE/PubMed (U.S. National Library of Medicine)
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    Title: Crystal structures of the human RNA demethylase Alkbh5 reveal basis for substrate recognition
    Author: Feng, Chong; Liu, Yang; Wang, Guoqiang; Deng, Zengqin; Zhang, Qi; Wu, Wei; Tong, Yufeng; Cheng, Changmei; Chen, Zhongzhou
    Subject: Alkb ; Alkbh5 ; Crystal Structure ; Drug Design ; Enzyme Inhibitors ; RNA Modification ; Substrate Recognition ; M6a Demethylase ; Mrna ; Dioxygenases -- Chemistry ; Membrane Proteins -- Chemistry
    Description: N(6)-Methylation of adenosine is the most ubiquitous and abundant modification of nucleoside in eukaryotic mRNA and long non-coding RNA. This modification plays an essential role in the regulation of mRNA translation and RNA metabolism. Recently, human AlkB homolog 5 (Alkbh5) and fat mass- and obesity-associated protein (FTO) were shown to erase this methyl modification on mRNA. Here, we report five high resolution crystal structures of the catalytic core of Alkbh5 in complex with different ligands. Compared with other AlkB proteins, Alkbh5 displays several unique structural features on top of the conserved double-stranded β-helix fold typical of this protein family. Among the unique features, a distinct "lid" region of Alkbh5 plays a vital role in substrate recognition and catalysis. An unexpected disulfide bond between Cys-230 and Cys-267 is crucial for the selective binding of Alkbh5 to single-stranded RNA/DNA by bringing a "flipping" motif toward the central β-helix fold. We generated...
    Is part of: The Journal of biological chemistry, 25 April 2014, Vol.289(17), pp.11571-83
    Identifier: 1083-351X (E-ISSN); 24616105 Version (PMID); 10.1074/jbc.M113.546168 (DOI)

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    The atomic resolution structure of human AlkB homolog 7 (ALKBH7), a key protein for programmed necrosis and fat metabolism

    Wang, Guoqiang, He, Qingzhong, Feng, Chong, Liu, Yang, Deng, Zengqin, Qi, Xiaoxuan, Wu, Wei, Mei, Pinchao, Chen, Zhongzhou
    The Journal of biological chemistry, 03 October 2014, Vol.289(40), pp.27924-36 [Peer Reviewed Journal]
    MEDLINE/PubMed (U.S. National Library of Medicine)
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    Title: The atomic resolution structure of human AlkB homolog 7 (ALKBH7), a key protein for programmed necrosis and fat metabolism
    Author: Wang, Guoqiang; He, Qingzhong; Feng, Chong; Liu, Yang; Deng, Zengqin; Qi, Xiaoxuan; Wu, Wei; Mei, Pinchao; Chen, Zhongzhou
    Subject: Alkb ; Alkbh7 ; Crystal Structure ; Dioxygenase ; Fatty Acid Metabolism ; Necrosis (Necrotic Death) ; Obesity ; Protein Hydroxylase ; Self-Hydroxylation ; X-Ray Crystallography ; Mitochondrial Proteins -- Chemistry
    Description: ALKBH7 is the mitochondrial AlkB family member that is required for alkylation- and oxidation-induced programmed necrosis. In contrast to the protective role of other AlkB family members after suffering alkylation-induced DNA damage, ALKBH7 triggers the collapse of mitochondrial membrane potential and promotes cell death. Moreover, genetic ablation of mouse Alkbh7 dramatically increases body weight and fat mass. Here, we present crystal structures of human ALKBH7 in complex with Mn(II) and α-ketoglutarate at 1.35 Å or N-oxalylglycine at 2.0 Å resolution. ALKBH7 possesses the conserved double-stranded β-helix fold that coordinates a catalytically active iron by a conserved HX(D/E) … Xn … H motif. Self-hydroxylation of Leu-110 was observed, indicating that ALKBH7 has the potential to catalyze hydroxylation of its substrate. Unlike other AlkB family members whose substrates are DNA or RNA, ALKBH7 is devoid of the "nucleotide recognition lid" which is essential for binding nucleobases, and...
    Is part of: The Journal of biological chemistry, 03 October 2014, Vol.289(40), pp.27924-36
    Identifier: 1083-351X (E-ISSN); 25122757 Version (PMID); 10.1074/jbc.M114.590505 (DOI)

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    HAPLESS13, the Arabidopsis μ1 adaptin, is essential for protein sorting at the trans-Golgi network/early endosome

    Wang, Jia-Gang, Li, Sha, Zhao, Xin-Ying, Zhou, Liang-Zi, Huang, Guo-Qiang, Feng, Chong, Zhang, Yan
    Plant physiology, August 2013, Vol.162(4), pp.1897-910 [Peer Reviewed Journal]

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    Characterization and mechanism of lead and zinc biosorption by growing Verticillium insectorum J3

    Feng, Chong-Ling, Li, Jin, Li, Xue, Li, Ke-Lin, Luo, Kun, Liao, Xing-Sheng, Liu, Tao
    PLoS ONE, 2018, Vol.13(12) [Peer Reviewed Journal]

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    Structural basis for the regulatory function of a complex zinc-binding domain in a replicative arterivirus helicase resembling a nonsense-mediated mRNA decay helicase

    Deng, Zengqin, Lehmann, Kathleen C, Li, Xiaorong, Feng, Chong, Wang, Guoqiang, Zhang, Qi, Qi, Xiaoxuan, Yu, Lin, Zhang, Xingliang, Feng, Wenhai, Wu, Wei, Gong, Peng, Tao, Ye, Posthuma, Clara C, Snijder, Eric J, Gorbalenya, Alexander E, Chen, Zhongzhou
    Nucleic acids research, March 2014, Vol.42(5), pp.3464-77 [Peer Reviewed Journal]

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    A MEMS Device Capable of Measuring Near-Field Thermal Radiation between Membranes

    Feng, Chong, Tang, Zhenan, Yu, Jun, Sun, Changyu
    Sensors, 2013, Vol.13(2), pp.1998-2010 [Peer Reviewed Journal]

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    Calprotectin, RAGE and TNF-α in hypertensive disorders in pregnancy: expression and significance

    Feng, Chong, Tao, Yongjian, Shang, Tao, Yu, Miao
    Archives of Gynecology and Obstetrics, 2011, Vol.283(2), pp.161-166 [Peer Reviewed Journal]

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    A Hybrid Method of Domain Lexicon Construction for Opinion Targets Extraction Using Syntax and Semantics

    Liao, Chun, Feng, Chong, Yang, Sen, Huang, He-Yan
    Journal of Computer Science and Technology, 2016, Vol.31(3), pp.595-603 [Peer Reviewed Journal]
    Springer Science & Business Media B.V.
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    Title: A Hybrid Method of Domain Lexicon Construction for Opinion Targets Extraction Using Syntax and Semantics
    Author: Liao, Chun; Feng, Chong; Yang, Sen; Huang, He-Yan
    Subject: domain lexicon ; opinion targets extraction ; syntactic structure ; semantic role ; word embedding
    Description: Opinion targets extraction of Chinese microblogs plays an important role in opinion mining. There has been a significant progress in this area recently, especially the method based on conditional random field (CRF). However, this method only takes lexicon-related features into consideration and does not excavate the implied syntactic and semantic knowledge. We propose a novel approach which incorporates domain lexicon with groups of syntactical and semantic features. The approach acquires domain lexicon through a novel way which explores syntactic and semantic information through Partof-Speech, dependency structure, phrase structure, semantic role and semantic similarity based on word embedding. And then we combine the domain lexicon with opinion targets extracted from CRF with groups of features for opinion targets extraction. Experimental results on COAE2014 dataset show the outperformance of the approach compared with other well-known methods on the task of opinion targets extraction.
    Is part of: Journal of Computer Science and Technology, 2016, Vol.31(3), pp.595-603
    Identifier: 1000-9000 (ISSN); 1860-4749 (E-ISSN); 10.1007/s11390-016-1649-z (DOI)

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    Experimental Investigation on Cooling/Heating Characteristics of Ultra-Thin Micro Heat Pipe for Electric Vehicle Battery Thermal Management

    Liu, Fei-Fei, Lan, Feng-Chong, Chen, Ji-Qing, Li, Yi-Gang
    Chinese Journal of Mechanical Engineering, 2018, Vol.31(1), pp.1-10 [Peer Reviewed Journal]
    Springer Science & Business Media B.V.
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    Title: Experimental Investigation on Cooling/Heating Characteristics of Ultra-Thin Micro Heat Pipe for Electric Vehicle Battery Thermal Management
    Author: Liu, Fei-Fei; Lan, Feng-Chong; Chen, Ji-Qing; Li, Yi-Gang
    Subject: Electric vehicle ; Lithium-ion battery ; Thermal management ; Ultra-thin micro heat pipe
    Description: Due to the heat pipes’ transient conduction, phase change and fluid dynamics during cooling/heating with high frequency charging/discharging of batteries, it is crucial to investigate in depth the experimental dynamic thermal characteristics in such complex heat transfer processes for more accurate thermal analysis and design of a BTMS. In this paper, the use of ultra-thin micro heat pipe (UMHP) for thermal management of a lithium-ion battery pack in EVs is explored by experiments to reveal the cooling/heating characteristics of the UMHP pack. The cooling performance is evaluated under different constant discharging and transient heat inputs conditions. And the heating efficiency is assessed under several sub-zero temperatures through heating films with/without UMHPs. Results show that the proposed UMHP BTMS with forced convection can keep the maximum temperature of the pack below 40 °C under 1 ~ 3C discharging, and effectively reduced the instant temperature increases and minimize the temperature fluctuation of the pack during transient federal urban driving schedule (FUDS) road conditions. Experimental data also indicate that heating films stuck on the fins of UMHPs brought about adequate high heating efficiency comparing with that stuck on the surface of cells under the same heating power, but has more convenient maintenance and less cost for the BTMS. The experimental dynamic temperature characteristics of UMHP which is found to be a high-efficient and low-energy consumption cooling/heating method for BTMSs, can be performed to guide thermal analysis and optimization of heat pipe BTMSs.
    Is part of: Chinese Journal of Mechanical Engineering, 2018, Vol.31(1), pp.1-10
    Identifier: 1000-9345 (ISSN); 2192-8258 (E-ISSN); 10.1186/s10033-018-0255-0 (DOI)

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    Experiment on the Reliability of Aluminum-Stainless Steel Joints by Cold-Pressing Joining

    Li, Feng, Sui, Xiao, Guo, Xin, Dai, Hong
    JOM, 2014, Vol.66(10), pp.2161-2167 [Peer Reviewed Journal]
    Springer Science & Business Media B.V.
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    Title: Experiment on the Reliability of Aluminum-Stainless Steel Joints by Cold-Pressing Joining
    Author: Li, Feng; Sui, Xiao; Guo, Xin; Dai, Hong
    Subject: Welding -- Methods ; Welding -- Innovations ; Stainless Steel -- Properties ; Aluminum Compounds -- Properties;
    Description: The problem of connection between dissimilar sheets is discussed in this article, with a focus on cold-pressing joining as the solution. The embedded deformation connection of 304 stainless steel and 1100 pure aluminum is used as an example. Connection strength gradually decreases with the punch load increasing. To improve the connection strength, a relevant approach is proposed. Compared with the previous improvement scheme, the connection strength improves 37.3%. Therefore, the embedded deformation joining is an efficient way for dissimilar sheets joining.
    Is part of: JOM, 2014, Vol.66(10), pp.2161-2167
    Identifier: 1047-4838 (ISSN); 1543-1851 (E-ISSN); 10.1007/s11837-014-1086-9 (DOI)