Article
Multidisciplinary Sciences
Xueqin Zhang, Georgina H. Joyce, Andy O. Leu, Jing Zhao, Hesamoddin Rabiee, Bernardino Virdis, Gene W. Tyson, Zhiguo Yuan, Simon J. Mcilroy, Shihu Hu
Summary: Anaerobic methanotrophic archaea (ANME) use multi-heme c-type cytochromes (MHCs) to mediate the reduction of metals and electrodes. Experimental evidence supports the involvement of these cytochromes in extracellular electron transfer (EET) from ANME to different electron sinks.
NATURE COMMUNICATIONS
(2023)
Article
Electrochemistry
Franziska Schachinger, Stefan Scheiblbrandner, Kwankao Karnpakdee, Erik Breslmayr, Su Ma, Roland Ludwig
Summary: Cytochromes are a group of proteins used in bioelectrochemistry as electron shuttles between biocatalysts and electrodes. Researchers identified 58 cytochromes out of 850 screened hemoproteins that met the requirements for electron transfer. These cytochromes have suitable structural and electrochemical properties, including a small size, exposed heme cofactor, reversible redox process, and fast electron transfer. The study confirms their electrochemical reversibility and demonstrates that c-type cytochromes have faster electron uptake compared to b-type cytochromes. The findings support the design of bioelectrocatalysts with high electron transfer rates.
ELECTROCHIMICA ACTA
(2023)
Article
Biochemistry & Molecular Biology
Wilfred R. Hagen, Ricardo O. Louro
Summary: Distances between Fe ions in multiheme cytochromes are short, allowing for intramolecular dipole-dipole interactions. Previous analysis of cytochrome EPR data has ignored this interaction. In this study, a low-frequency broadband EPR spectrometer was used to investigate the dipolar interaction in two cytochromes and identify limitations in analysis.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Crystallography
Rita Chertkova, Tatyana Bryantseva, Nadezhda A. Brazhe, Kseniya S. Kudryashova, Victor V. Revin, Alexei N. Nekrasov, Alexander Yusipovich, Alexey R. Brazhe, Andrew B. Rubin, Dmitry A. Dolgikh, Mikhail P. Kirpichnikov, Georgy Maksimov
Summary: The secondary structure of horse cytochrome c with mutations in the P(76)GTKMIFA(83) site of the Omega-loop, exhibiting reduced efficiency of electron transfer, was studied. CD spectroscopy and IR spectroscopy data showed changes in structural elements, with an increase in beta-structural elements and a decrease in non-structured elements. H-1-NMR spectra analysis revealed specific features in the secondary structure related to changes in the heme microenvironment. These changes likely contribute to the decreased efficiency of electron transfer in the studied cytochromes c.
Article
Multidisciplinary Sciences
Tanya J. Espino-Sanchez, Henry Wienkers, Rebecca G. Marvin, Shai-Anne Nalder, Aldo E. Garcia-Guerrero, Peter E. VanNatta, Yasaman Jami-Alahmadi, Amanda Mixon Blackwell, Frank G. Whitby, James A. Wohlschlegel, Matthew T. Kieber-Emmons, Christopher P. Hill, Paul A. Sigala
Summary: The functions of Plasmodium malaria parasites' cytochrome c remain unclear. They express two distinct cytochrome c homologs, c and c-2, with little sequence similarity. Knockdown or knockout of cytochrome c-2 had little impact on parasite growth, indicating the reliance on the more conserved cytochrome c for mitochondrial function. Biochemical and structural studies showed that cytochrome c-2 has an unusually open active site and can bind exogenous small molecules. These findings provide important insights into the cytochrome functions in malaria parasites.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Engineering, Environmental
Xizi Long, Yoshihide Tokunou, Akihiro Okamoto
Summary: Bacterial outer-membrane multi-heme cytochromes (OMCs) can modify heme coupling through mechanical interactions among OMCs by controlling their concentrations. The concentration of OMCs significantly impacts their circular dichroism (CD) spectra and redox property, resulting in a 4-fold change in microbial current production. Overexpression of OMCs increases the conductive current across the biofilm, indicating enhanced inter-protein electron hopping via collision on the cell surface.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Nisreen M. Shumayrikh, Jeffrey J. Warren, Andrew J. Bennet, Dipankar Sen
Summary: The study reports fast kinetic measurements to identify the H2O2-generated activated heme species within a heme.DNAzyme, showing that the DNA GQ enhances both the kinetics of formation of the active intermediate and the oxidation step of the substrate.
NUCLEIC ACIDS RESEARCH
(2021)
Article
Biochemistry & Molecular Biology
Nadezda A. Brazhe, Evelina I. Nikelshparg, Adil A. Baizhumanov, Vera G. Grivennikova, Anna A. Semenova, Sergey M. Novikov, Valentyn S. Volkov, Aleksey V. Arsenin, Dmitry I. Yakubovsky, Andrey B. Evlyukhin, Zhanna V. Bochkova, Eugene A. Goodilin, Georgy V. Maksimov, Olga Sosnovtseva, Andrey B. Rubin
Summary: A novel sensor using label-free surface-enhanced Raman spectroscopy (SERS) has been developed to identify conformational changes in cytochrome c heme and elucidate its role in functioning mitochondria. It has been shown that molecule bond vibrations assessed by SERS are a reliable indicator of heme conformation, which regulates the efficiency of the mitochondrial respiratory chain and adjusts mitochondrial respiration to the cell's consumption of ATP.
FREE RADICAL BIOLOGY AND MEDICINE
(2023)
Article
Chemistry, Multidisciplinary
Da-Hua Wei, Sheng-Kai Tong, Sheng-Chiang Chen, Yong-Han Hao, Ming-Ru Wu, Cheng-Jie Yang, Rong-Tan Huang, Ren-Jei Chung
Summary: The surface properties and mechanical nanohardness of chromium nitride films can be controlled by adjusting the ratio of nitrogen to argon gases. The surface wettability is mainly influenced by hydrophilicity. Additionally, the preferred orientation of the crystal can be changed by adjusting the nitrogen-to-argon ratio.
Article
Chemistry, Multidisciplinary
Shengnan Chen, Xiaoying Ma, Zheren Cai, Haoran Long, Xiaoyu Wang, Zheng Li, Zhiyuan Qu, Fengjiao Zhang, Yali Qiao, Yanlin Song
Summary: This study presents a direct writing approach to achieve high-quality organic semiconductor single-crystal (OSSC) patterns with unique orientation. By manipulating the microscale meniscus, the nucleation and growth process of OSSCs can be precisely controlled. The mechanism behind the selective deposition and unique orientation is experimentally and theoretically revealed. Moreover, organic field-effect transistors (OFETs) and polarization-sensitive photodetectors based on the OSSC patterns exhibit higher device performance compared to non-purely oriented crystal-based OFETs.
ADVANCED MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Sung Bo Lee, Seung Jo Yoo, Jinwook Jung, Heung Nam Han
Summary: The irradiation of high-energy particles can affect the grain-boundary structure of polycrystalline nuclear materials, with different reactions observed for different grain-boundary characteristics. By examining different types of grain boundaries in a model system, it was found that tilt boundaries became roughened while twist boundaries became faceted under the same irradiation conditions.
SCRIPTA MATERIALIA
(2021)
Article
Materials Science, Multidisciplinary
Tuomo Nyyssonen, Azdiar A. Gazder, Ralf Hielscher, Frank Niessen
Summary: This study developed a new algorithm for determining the dominant habit plane of a transformed child phase, based on orientation maps of a single planar cross-section. The algorithm is robust, computationally efficient, automated, and can operate on fully transformed microstructures. Four automated methods for habit plane trace determination are proposed and compared. Validation on synthetic microstructures and different steel samples showed consistent results.
Article
Chemistry, Inorganic & Nuclear
Dipankar Sahoo, Rakesh Mazumdar, Subhadip Pramanik, Sayantani Banerjee, Ranjan Patra, Sankar Prasad Rath
Summary: This study reports a series of five- and six-coordinated Fe-porphyrins and investigates the effects of non-covalent interactions on the out-of-plane displacement and spin states of iron, as well as the orientation of axial ligands. The results show that weak hydrogen bonding interactions result in elongation of Fe-O bonds and stabilization of the mixed spin state of iron. Additionally, the movement of axial ligands is restricted by strong pi-interactions. This study provides important insights into the functioning of hemoproteins such as hemoglobin.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Physical
Young Jun Kim, Ju Young Maeng, Seon Young Hwang, Ju Hyun Yang, Ilsun Yoon, Chang Woo Myung, Choong Kyun Rhee, Youngku Sohn
Summary: The electrochemical CO2 reduction method is a green energy and environmental solution. The use of Au/Ni electrodes allows for the direct synthesis of long-chain hydrocarbons, providing a novel energy and environmental strategy.
Article
Electrochemistry
Xiaomei Yan, Su Ma, Jing Tang, David Tanner, Jens Ulstrup, Xinxin Xiao, Jingdong Zhang
Summary: This study systematically investigates the direct electrochemical electron transfer of the membrane-bound redox enzyme fructose dehydrogenase on Au and nanoporous gold electrodes. It reveals the optimal activity performance under different thiol self-assembled monolayers and offers mechanistic insights into the process.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Analytical
Fang-Nan Xiao, Kang Wang, Feng-Bin Wang, Xing-Hua Xia
ANALYTICAL CHEMISTRY
(2015)
Article
Chemistry, Analytical
Hong-Li Gao, Min Wang, Zeng-Qiang Wu, Chen Wang, Kang Wang, Xing-Hua Xia
ANALYTICAL CHEMISTRY
(2015)
Article
Biophysics
Hao-Hua Deng, Ling-Na Zhang, Shao-Bin He, Ai-Lin Liu, Guang-Wen Li, Xin-Hua Lin, Xing-Hua Xia, Wei Chen
BIOSENSORS & BIOELECTRONICS
(2015)
Article
Chemistry, Analytical
Hao-Hua Deng, Guo-Lin Hong, Feng-Lin Lin, Ai-Lin Liu, Xing-Hua Xia, Wei Chen
ANALYTICA CHIMICA ACTA
(2016)
Article
Chemistry, Multidisciplinary
Jiong Wang, Wen-Feng Lin, Yi Shi, Huai-Song Wang, Lian-Qing Rong, Xing-Hua Xia
CHEMICAL COMMUNICATIONS
(2016)
Article
Chemistry, Multidisciplinary
Huaping Peng, Pan Liu, Danwei Lin, Yani Deng, Yun Lei, Wei Chen, Yuanzhong Chen, Xinhua Lin, Xinghua Xia, Ailin Liu
CHEMICAL COMMUNICATIONS
(2016)
Article
Chemistry, Analytical
Yakai He, Jing Zhang, Sade Ruffin, Lina Ji, Kang Wang, Rastislav Levicky, Xinghua Xia
Article
Chemistry, Physical
Jin-Yi Li, Zeng-Qiang Wu, Jing-Juan Xu, Hong-Yuan Chen, Xing-Hua Xia
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2016)
Article
Chemistry, Physical
Zeng-Qiang Wu, Zhong-Qiu Li, Jin-Yi Li, Jing Gu, Xing-Hua Xia
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2016)
Editorial Material
Chemistry, Multidisciplinary
Xing-Hua Xia
SCIENCE CHINA-CHEMISTRY
(2017)
Article
Biophysics
Ai-Ling Hu, Hao-Hua Deng, Xiao-Qing Zheng, Yan-Yu Wu, Xiu-Ling Lin, Ai-Lin Liu, Xing-Hua Xia, Hua-Ping Peng, Wei Chen, Guo-Lin Hong
BIOSENSORS & BIOELECTRONICS
(2017)
Article
Electrochemistry
Xiao-Ping Zhao, Jing Cao, Xing-Guo Nie, Shan-Shan Wang, Chen Wang, Xing-Hua Xia
ELECTROCHEMISTRY COMMUNICATIONS
(2017)
Article
Chemistry, Multidisciplinary
Chen Wang, Xing-Guo Nie, Yi Shi, Yue Zhou, Jing-Juan Xu, Xing-Hua Xia, Hong-Yuan Chen
Article
Chemistry, Multidisciplinary
Chen Wang, Yi Shi, Yuan-Yuan Dan, Xing-Guo Nie, Jian Li, Xing-Hua Xia
CHEMISTRY-A EUROPEAN JOURNAL
(2017)
Article
Chemistry, Analytical
Jun Hu, Qi-Yuan Guan, Jiang Wang, Xiao-Xiao Jiang, Zeng-Qiang Wu, Xing-Hua Xia, Jing-Juan Xu, Hong-Yuan Chen
ANALYTICAL CHEMISTRY
(2017)
Review
Chemistry, Multidisciplinary
Dan He, Yawen Li, Fuwen Zhao, Yuze Lin
Summary: High trap density in organic solar cells leads to localized charge carriers and reduced carrier lifetime, limiting device efficiency. This feature article summarizes the recent advances of trap suppression by material design and device engineering.
CHEMICAL COMMUNICATIONS
(2024)
Review
Chemistry, Multidisciplinary
Olivier Monfort, Arshitha Madhusudhan, Martin Motola
Summary: This article presents the advantages of coupling photocatalysis and Fenton-based processes for environmental remediation and discusses their synergy. It critically examines the simultaneous triggering of these two processes and provides insights into research approaches. The study aims to enhance understanding of this complex process and highlight the potential integration of new catalysts in current wastewater treatment technology.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Manideepa Dhar, Chittaranjan Mishra, Avijit Das, Uttam Manna
Summary: An approach of 'polymerization of monomers in its aggregated form' has been introduced to tailor the water wettability of fibrous and porous substrates, achieving hydrophobicity to superhydrophobicity transition, as well as patterned wettability. This facile chemical method provides a durable coating with adjustable and patterned wettability for various potential applications.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Saswat Ranjan Bhoi, Chhanda Debnath, Shikha Gandhi
Summary: In this article, a novel catalytic reaction using Pd(0) and Bronsted acid is reported for the synthesis of biologically important imidazolidinone-fused N-heterocycles through redox-neutral intramolecular N-allylation of indoles and pyrroles with alkynes. This atom-economical method is applicable to a wide range of substrates and eliminates the need for leaving groups or oxidizing agents commonly used in traditional allylation reactions.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Longkun Chen, Mingshuai Zhang, Meichen Liu, Zhuoyuan Liu, Yuetong Qiu, Zhilai Zhang, Fuchao Yu, Jiuzhong Huang
Summary: In this study, an efficient Rh(III)-catalyzed selective mono- and dual-C-H bond functionalization/cyclization with iodonium ylide as the sole coupling partner was demonstrated. Fused benzodiazepine skeletons were obtained in excellent yields, providing an improved approach to dual C-H unsymmetrical functionalization.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Alice Kennett, Sven Epple, Gabriella van der Valk, Irene Georgiou, Evelyne Gout, Romain R. Vives, Angela J. Russell
Summary: This study presents the design and synthesis of sulfated disaccharide inhibitors based on IdoA(2S)-GlcNS(6S), which showed potent inhibition of Sulf-2. The results suggest that IdoA(2S)-GlcNS(6S) is the shortest fragment size required for effective inhibition of Sulfs, and a trisulfated disaccharide is identified as the minimal fragment size of heparan sulfate for effective endosulfatase inhibition.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Mauro Garbini, Andrea Brunetti, Riccardo Pedrazzani, Magda Monari, Massimo Marcaccio, Giulio Bertuzzi, Marco Bandini
Summary: The self-adaptability of galvanostatic electrolysis was found to be helpful in a multistage chemo- and diastereoselective electrochemically promoted cyclodimerization of chalcones. Through a series of reductive events, densely functionalized cyclopentanes with five contiguous stereocenters were obtained (25 examples, yields up to 95%, dr values up to >20:1). Further experimental and electrochemical investigations indicated the crucial role of dynamic kinetic resolution of the aldol intermediate in the reaction mechanism.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Dhananjay S. Nipate, Neha Meena, Prakash N. Swami, Krishnan Rangan, Anil Kumar
Summary: In this study, the synthesis of functionalized benzo[a]phenazines and indazolo[2,3-a]quinolines was achieved through Rh(III)-catalyzed oxidative annulation of 2-arylquinoxalines and 2-aryl-2H-indazoles with allyl alcohols. The method showed a wide substrate scope, excellent functional group tolerance, good to high yields of annulated products, and the capability for scaled-up synthesis. A tentative mechanism of the annulation reaction was proposed based on a preliminary mechanistic investigation.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Ruonan Zhang, Abudukadi Tudi, Xia Yang, Xuping Wang, Zhihua Yang, Shujuan Han, Shilie Pan
Summary: A new lead tellurium borate material with a unique fundamental building block [B4O10] was synthesized and found to exhibit high birefringence. The structure-property relationship was discussed using first-principles calculations.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Amresh Kumar Singh, Baishali Thakurta, Anupam Giri, Monalisa Pal
Summary: This study introduces three key concepts for the quick synthesis of large-scale high-quality 2D materials films and their utilization in device fabrication.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Reina Hagiwara, Shun Nishimura, Kosuke Okeyoshi
Summary: A copolymer-conjugated nanocatalytic system has been developed to improve electron transfer and enhance photoinduced H2 generation.
CHEMICAL COMMUNICATIONS
(2024)
