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Direct acetylation of a conserved threonine of RIN4 by the bacterial effector HopZ5 or AvrBsT activates RPM1-dependent immunity in Arabidopsis

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Molecular Plant 2021年第11期14卷 1951-1960页

作者： Arabidopsis Sera choi Maxim Prokchorchik Hyeonjung Lee Ravi Gupta Yoonyoung Lee eui-Hwan Chung Buhyeon Cho Min-Sung Kim Sun Tae Kim Kee Hoon Sohn Department of Life Sciences Pohang University of Science and TechnologyPohang 37673Republic of Korea School of Interdisciplinary Bioscience and Bioengineering Pohang University of Science and TechnologyPohang 37673Republic of Korea Department of Plant Bioscience Life and Industry Convergence Research InstitutePusan National UniversityMiryang 50463Republic of Korea Department of Botany School of Chemical and Life SciencesJamia HamdardHamdard NagarNew Delhi 110062India Division of Biotechnology Korea UniversitySeoul 02841Republic of Korea The Institute of Crop Science and Resource Conservation(INRES) University of BonnNussallee 953115 BonnGermany

Plant pathogenic bacteria deliver effectors into plant cells to suppress immunity and promote pathogen survival;however, these effectors can be recognised by plant disease resistance (R) proteins to activate innate immunity. The bacterial acetyltransferase effectors HopZ5 and AvrBsT trigger immunity in Arabidopsis thaliana genotypes lacking SUPPRESSOR OF AVRBST-ELICITED RESISTANCE 1 (SOBER1). Using an Arabidopsis accession, Tscha-1, that naturally lacks functional SOBER1 but is unable to recognise HopZ5, we demonstrate that RESISTANCE TO P. SYRINGAE PV MACULICOLA 1 (RPM1) and RPM1-INTERACTING PROTEIN 4 (RIN4) are indispensable for HopZ5- or AvrBsT-triggered immunity. Remarkably, T166 of RIN4, the phosphorylation of which is induced by AvrB and AvrRpm1, was directly acetylated by HopZ5 and AvrBsT. Furthermore, we demonstrate that the acetylation of RIN4 T166 is required and sufficient for HopZ5- or AvrBsT-triggered RPM1-dependent defence activation. Finally, we show that SOBER1 interferes with HopZ5- or AvrBsT-triggered immunity by deacetylating RIN4 T166. We have thus elucidated detailed molecular mechanisms underlying the activation and suppression of plant innate immunity triggered by two bacterial acetyltransferases, HopZ5 and AvrBsT from different bacterial pathogens.

关键词： Acetyltransferase effectors Effector-triggered immunity Immunity suppressors NLR Plant deacetylase Plant immunity

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Electrokinetic-mechanism of water and furfural oxidation on pulsed laser-interlaced Cu_(2)O and CoO on nickel foam

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Journal of Energy Chemistry 2024年第4期91卷 145-154页

作者： Yewon Oh Jayaraman Theerthagiri M.L.Aruna Kumari Ahreum Min Cheol Joo Moon Myong yong choi Department of Chemistry(BK21 FOUR) Research Institute of Natural SciencesGyeongsang National UniversityJinju 52828Republic of Korea Department of Chemistry The Oxford College of ScienceBengaluruKarnataka 560102India Core-Facility Center for Photochemistry&Nanomaterials Gyeongsang National UniversityJinju 52828Republic of Korea

The electrocatalytic oxidation of biomass-derived furfural(FF)feedstocks into 2-furoic acid(FA)holds immense industrial potential in optics,cosmetics,polymers,and ***,we fabricated Co O/Ni O/nickel foam(NF)and Cu_(2)O/Ni O/NF electrodes via in situ pulsed laser irradiation in liquids(PLIL)for the bifunctional electrocatalysis of oxygen evolution reaction(OER)and furfural oxidation reaction(FOR),*** oxidation of NF surface to NiO and deposition of CoO and/or Cu_(2)O on NF during PLIL offer distinct advantages for enhancing both the OER and ***/NiO/NF electrocatalyst provides a consistently low overpotential of~359 m V(OER)at 10 m A/cm^(2),achieving the maximum FA yield(~16.37 m M)with 61.5%selectivity,79.5%carbon balance,and a remarkable Faradaic efficiency of~90.1%during 2 h of FOR at 1.43 V(*** hydrogen electrode).Mechanistic pathway via in situ electrochemical-Raman spectroscopy on CoO/NiO/NF reveals the involvement of phase transition intermediates(NiOOH and CoOOH)as surface-active centers during electrochemical *** carbonyl carbon in FF is attacked by hydroxyl groups to form unstable hydrates that subsequently undergo further oxidation to yield FA *** method holds promise for large-scale applications,enabling simultaneous production of renewable building materials and fuel.

关键词： Pulsed laser irradiation in liquids Water and furfural oxidation In situ Raman spectroscopy CoO/NiO/nickel foam Cu_(2)O/Nio/nickel foam 2-furoic acid

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Dietary sophorolipid accelerates growth by modulation of gut microbiota population and intestinal environments in broiler chickens

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Journal of Animal Science and Biotechnology 2022年第1期13卷 256-264页

作者： Min-Jin Kwak Min-Young Park yong-Soon choi Junghwan Cho Duleepa Pathiraja Jonggun Kim Hanbae Lee In-Geol choi Kwang-Youn Whang Department of Biotechnology Korea University145 Anam-roSeoul 02841Republic of Korea Pathway Intermediates Seoul 02841Republic of Korea

Background:Gut is a crucial organ for the host’s defense system due to its filtering action of the intestinal membrane from hazardous foreign *** strategy to strengthen the gut epithelial barrier function is to upregulate beneficial microflora populations and their ***(SPL),which is a glycolipid biosurfactant,could increase beneficial microflora and decrease pathogenic bacteria in the gastrointestinal ***,herein,we conducted an experiment with broiler chickens to investigate the fortifying effects of SPL on the host’s gut defense system by modulating the microbiota ***:A total of 5401-day-old chicks(Ross 308)were used,and they were immediately allotted into three treatment groups(6 replications with 30 chicks/pen)according to their initial body *** dietary treatments consisted of CON(basal diet),BAM(10 mg/kg bambermycin),and SPL(10 mg/kg SPL).During the experiment,birds freely accessed feed and water,and body weight and feed intake were measured at the end of each *** d 35,birds(one bird/pen)were sacrificed to collect jejunum and cecum ***:Dietary SPL and BAM supplementation significantly accelerated birds’growth and also significantly improved feed efficiency compared to *** microbial community was significantly separated by dietary SPL supplementation from that of CON,and dietary SPL supplementation significantly increased Lactobacillus *** Akkermansia ***,birds fed with dietary SPL also showed the highest concentration of cecal butyrate among all treatment *** morphological analysis showed that dietary SPL significantly increased villus height,ratio of villus height to crypt depth,goblet cell numbers,and the gene expression levels of claudin-1 and mucin ***,dietary SPL significantly decreased the mRNA expression level of pro-inflammatory cytokine,interleukin-6,and increased that of anti-inflammatory cytokine,interleukin-10,compared

关键词： Broilers Gut microbiota Gut morphology Local inflammation Mucus barrier Sophorolipids

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Ultra-robust informational metasurfaces based on spatial coherence structures engineering

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Light(Science & Applications) 2024年第7期13卷 1310-1319页

作者： Leixin Liu Wenwei Liu Fei Wang Xiaofeng Peng Duk-yong choi Hua Cheng Yangjian Cai Shuqi Chen Shandong Provincial Engineering and Technical Center of Light Manipulations Collaborative Innovation Center of Light Manipulation and ApplicationsShandong Provincial Key Laboratory of Optics and Photonic DeviceSchool of Physics and ElectronicsShandong Normal UniversityJinan 250014China. The Key Laboratory of Weak Light Nonlinear Photonics Ministry of EducationSchool of PhysicsSchool of Materials Science and EngineeringSmart Sensing Interdisciplinary Science CenterNankai UniversityTianjin 300071China. School of Physical Science and Technology Soochow UniversitySuzhou 215006China. Laser Physics Centre Research School of PhysicsAustralian National UniversityCanberraACT 2601Australia. The Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuanShanxi 030006China

Optical information transmission is vital in modern optics and photonics due to its concurrent and multi-dimensional nature,leading to tremendous applications such as optical microscopy,holography,and optical *** optical information transmission technologies suffer from bulky optical setup and information loss/crosstalk when meeting scatterers or obstacles in the light ***,we theoretically propose and experimentally realize the simultaneous manipulation of the coherence lengths and coherence structures of the light beams with the disordered *** ultra-robust optical information transmission and self-reconstruction can be realized by the generated partially coherent beam with modulated coherence structure even 93%of light is recklessly obstructed during light transmission,which brings new light to robust optical information transmission with a single *** method provides a generic principle for the generalized coherence manipulation on the photonic platform and displays a variety of functionalities advancing capabilities in optical information transmission such as meta-holography and imaging in disordered and perturbative media.

关键词： optics coherent holography

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Design and roles of RGO-wrapping in charge transfer and surface passivation in photoelectrochemical enhancement of cascade-band photoanode

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Nano Research 2017年第7期10卷 2415-2430页

作者： Zhuo Zhang Mingi choi Minki Baek Insung Hwang Changshin Cho Zexiang Deng Jinwoo Lee Kijung yong Surface Chemistry Laboratory of Electronic Materials Department of Chemical Engineering POSTECH Pohang 790-784 Republic of Korea Advanced Functional Nanomaterial Laboratory Department of Chemical Engineering POSTECH Pohang 790-784 Repubfic of Korea State Key Laboratory of Optoelectronic Materials and Technologies School of Physics and Engineering Sun Yat-Sen University Guangzhou 510275 China

Fast charge transfer and anti-photocorrosion are two crucial factors for developing efficient, durable photoanodes for photoelectrochemical （PEC） cells. Reduced graphene oxide （RGO） is a promising photoanode element that can provide both of these. In this study, we elucidated the roles of RGO in the charge transfer and surface passivation of photoanodes by the precise design of a RGO-wrapped photoanode and examination of its PEC properties. Arrays of hetero-nanorods （HNRs） with three different designs were fabricated as photoanodes using RGO, CdSe nanoparticles （NPs）, and ZnO nanorods （NRs） as building blocks. CdSe@ZnO HNRs were prepared by decorating ZnO NRs with CdSe NPs. Finite-element analysis and experimental studies demonstrated that in the CdSe@ZnO HNRs, if only the ZnO NRs were wrapped by RGO, the conductivity between CdSe and ZnO was enhanced by RGO to shuttle charges. If RGO only surrounded the outside of the CdSe@ZnO HNRs, the corrosion was slowed owing to the passivation effect of RGO, which increased the electron lifetime of the photoanode. If both CdSe and ZnO were fully wrapped by RGO, the advantages of the two aforementioned cases were both obtained. RGO-wrapped CdSe@ZnO HNRs with position-controlled designs are promising photoanode materials with a high PEC efficiency, and the developed synthesis process can be applied to explore the design and fabrication of next-generation photoanodes using RGO as a buildin~ block.

关键词： photoelectrochemical reduced graphene oxide(RGO) charge transfer surface passivation CdSe ZnO

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3D cell-printing of gradient multi-tissue interfaces for rotator cuff regeneration

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Bioactive Materials 2023年第1期19卷 611-625页

作者： Suhun Chae Uijung yong Wonbin Park Yoo-mi choi In-Ho Jeon Homan Kang Jinah Jang Hak Soo choi Dong-Woo Cho Department of Mechanical Engineering Pohang University of Science and Technology77 Cheongam-roNam-guGyeongsangbuk-doPohang37673South Korea EDmicBio Inc. 111 Hoegi-roDongdaemun-guSeoul 02445South Korea Institute for Convergence Research and Education in Advanced Technology Yonsei University50 Yonsei-roSeodaemun-guSeoul03722South Korea Gordon Center for Medical Imaging Department of RadiologyMassachusetts General Hospital&Harvard Medical School14913th StreetBostonMA02114USA Department of Convergence IT Engineering Pohang University of Science and Technology77 Cheongam-roNam-guGyeongsangbuk-doPohang37673South Korea School of Interdisciplinary Bioscience and Bioengineering Pohang University of Science and Technology77 Cheongam-roNam-guGyeongsangbuk-doPohang37673South Korea Department of Orthopaedic Surgery Asan Medical CenterCollege of MedicineUniversity of Ulsan86 Asanbyeongwon-gilSongpa-guSeoul05505South Korea

Owing to the prevalence of rotator cuff(RC)injuries and suboptimal healing outcome,rapid and functional regeneration of the tendon-bone interface(TBI)after RC repair continues to be a major clinical *** the essential role of the RC in shoulder movement,the engineering of biomimetic multi-tissue constructs presents an opportunity for complex TBI reconstruction after RC ***,we propose a gradient cell-laden multi-tissue construct combined with compositional gradient TBI-specific bioinks via 3D cell-printing *** vitro studies demonstrated the capability of a gradient scaffold system in zone-specific inducibility and multi-tissue formation mimicking *** regenerative performance of the gradient scaffold on RC regeneration was determined using a rat RC repair *** particular,we adopted nondestructive,consecutive,and tissue-targeted near-infrared fluorescence imaging to visualize the direct anatomical change and the intricate RC regeneration progression in real time in ***,the 3D cell-printed implant promotes effective restoration of shoulder locomotion function and accelerates TBI healing in *** summary,this study identifies the therapeutic contribution of cell-printed constructs towards functional RC regeneration,demonstrating the translational potential of biomimetic gradient constructs for the clinical repair of multi-tissue interfaces.

关键词： 3D cell-printing Tissue-specific bioink Gradient tissue scaffolds Near-infrared fluorophores Rotator cuff repair

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Nano-precision combined process of electrolytic in-process dressing grinding and magnetic assisted polishing on optics glass material

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中国有色金属学会会刊：英文版 2009年第B9期19卷 301-306页

作者： Tae-Soo KWAK yong-Chul LEE Gyung-Nyun KIM Dae-Bong choi Mikio YAMANOI Hitoshi OHMORI Department of Mechanical Engineering Jinju National University

This study is focused on the application of an effective fabrication method combining electrolytic in-process dressing(ELID) grinding and magnetic assisted polishing(MAP) to nano-precision mirror surface grinding on the optics glass-ceramic named Zerodure that is commonly used in precision optics components. The results show the variation of surface roughness after MAP processes utilizing Fe+CeO2, Fe+CeO2+diamond paste and Fe+diamond paste are applied to ELID ground surfaces. The MAP surface roughnesses for ELID ground surface roughnesses(Ra) of 52.1, 39.8 and 51.1 nm using #1200 grinding wheel are improved to 6.1, 4.6 and 1.9 nm, respectively. The surface roughness of MAP process using Fe+CeO2+diamond paste is superior to that using other processes. Moreover, it takes less than 10 min to conduct the MAP processes. The combined method suggested effectively reduces the working time to get the required surface qualities.

关键词：在线电解修整光学玻璃纳米相抛光材料电解过程表面粗糙度地面粗糙度磨削

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Diverse Functions of VDUP1 in Cell Proliferation,Differentiation,and Diseases

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Cellular & Molecular Immunology 2007年第5期4卷 345-351页

作者： Sang yong Kim Hyun-Woo Suh Jin Woong Chung Suk-Ran Yoon Inpyo choi Stem Cell Research Center Korea Research Institute of Bioscience and BiotechnologyYusongTaejon 305-333Republic of Korea

Vitamin D3 up-regulated protein 1 （VDUP1） is a multifunctional protein involved in maintaining cellular homeostasis. VDUP1 is induced by a variety of stresses. Inversely, VDUP1 is often reduced in various tumor tissues and cell lines. Over-expression of VDUP1 inhibits cell proliferation through cell cycle arrest. VDUP1 interacts with thioredoxin （Trx） and negatively regulates the expression and antioxidant function of Trx which is involved in redox regulation. VDUP1/ mice are more susceptible to carcinogenesis than wild-type mice and are defective in establishing immune system induding the development and function of natural killer cells. Furthermore, VDUP1^-/- mice show impaired Kreb cycle-mediated fatty acid utilization. In this review, we have discussed the multifunctional roles of VDUP1 in diverse cellular responses, in particular its relation to proliferation, apoptosis, differentiation, and diseases such as cancer and stress-related diseases.

关键词： VDUP1 thioredoxin proliferation immune cell

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T cell epitopes in SARS-CoV-2 proteins are substantially conserved in the Omicron variant

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Cellular & Molecular Immunology 2022年第3期19卷 447-448页

作者： Seong Jin choi Dong-Uk Kim Ji Yun Noh Sangwoo Kim Su-Hyung Park Hye Won Jeong eui-Cheol Shin Division of Infectious Disease Department of Internal MedicineSeoul National University HospitalSeoulRepublic of Korea Graduate School of Medical Science and Engineering Korea Advanced Institute of Science and Technology(KAIST)DaejeonRepublic of Korea Division of Infectious Diseases Department of Internal MedicineKorea University College of MedicineSeoulRepublic of Korea Department of Biomedical Systems Informatics Graduate School of Medical ScienceBrain Korea 21 ProjectYonsei University College of MedicineSeoulRepublic of Korea Department of Internal Medicine Chungbuk National University College of MedicineCheongjuRepublic of Korea The Center for Viral Immunology Korea Virus Research InstituteInstitute for Basic Science(IBS)DaejeonRepublic of Korea

In November 2021,the Omicron variant(B.1.1.529)emerged and was designated a variant of concern(VOC)by the World Health ***,Omicron was reported to extensively escape neutralizing antibodies elicited by COVID-19 vaccination or natural infection[1,2,3].However,whether Omicron evades the T cell immunity elicited by COVID-19 vaccination or natural infection remains to be *** address this issue,we analyzed the amino acid sequences of T cell epitopes identified from the original SARS-CoV-2 strain(Wuhan-Hu-1)in the Omicron variant(hCoV-19/South Africa/CERI-KRISP-K032284/2021).

关键词： neutral conserved elucidated

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Understanding the physical metallurgy of the CoCrFeMnNi high-entropy alloy:an atomistic simulation study

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npj Computational Materials 2018年第1期4卷 662-670页

作者： Won-Mi choi yong Hee Jo Seok Su Sohn Sunghak Lee Byeong-Joo Lee Department of Material Science and Engineering Pohang University of Science and Technology(POSTECH)Pohang 37673Republic of Korea

Although high-entropy alloys(HEAs)are attracting interest,the physical metallurgical mechanisms related to their properties have mostly not been clarified,and this limits wider industrial applications,in addition to the high alloy *** clarify the physical metallurgical reasons for the materials phenomena(sluggish diffusion and micro-twining at cryogenic temperatures)and investigate the effect of individual elements on solid solution hardening for the equiatomic CoCrFeMnNi HEA based on atomistic simulations(Monte Carlo,molecular dynamics and molecular statics).A significant number of stable vacant lattice sites with high migration energy barriers exists and is thought to cause the sluggish *** predict that the hexagonal close-packed(hcp)structure is more stable than the face-centered cubic(fcc)structure at 0 K,which we propose as the fundamental reason for the micro-twinning at cryogenic *** alloying effect on the critical resolved shear stress(CRSS)is well predicted by the atomistic simulation,used for a design of non-equiatomic fcc HEAs with improved strength,and is experimentally *** study demonstrates the applicability of the proposed atomistic approach combined with a thermodynamic calculation technique to a computational design of advanced HEAs.

关键词： alloy alloying entropy

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