Article
Biotechnology & Applied Microbiology
Manideep Kollipara, Philipp Matzel, Miriam Sowa, Stefan Brott, Uwe Bornscheuer, Matthias Hoehne
Summary: In this study, novel ATA enzymes with high operational stabilities were identified through database mining. The results confirmed the positive impact of tetrameric structure on operational stability, but also revealed exceptions to this correlation. Burkholderia multivorans ATA exhibited broad substrate specificity, high activity, and good thermostability under both storage and operating conditions. It could also tolerate the presence of co-solvents without losing stability.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2022)
Article
Food Science & Technology
Yuan Li, Liangqi Chen, Xiyu Tang, Wenhui Zhu, Aixia Ma, Changyu Shi, Jinyao Li
Summary: Food-derived nattokinase has strong thrombolytic activity and few side effects, with potential applications in medicine as an adjuvant drug for thrombosis treatment and in the development of nattokinase-rich beverages and health foods. In this study, by using thermostability-prediction algorithms, two variants (S33T and T174V) of nattokinase with increased thermostability and fibrinolytic activity were screened. These variants have the potential for industrial production and application.
Article
Biotechnology & Applied Microbiology
Fangfang Fan, Chunyan Liu, Jiaren Cao, Changjiang Lyu, Shuai Qiu, Sheng Hu, Tingting Sun, Jiaqi Mei, Hongpeng Wang, Ye Li, Weirui Zhao, Lehe Mei, Jun Huang
Summary: Synthetic shuffling technology was used to enhance the thermostability of (R)-selective transaminase. The best mutant M14 showed improved catalytic efficiency and higher enzyme activity towards acetophenone and 1-acetylnaphthalene.
JOURNAL OF BIOTECHNOLOGY
(2023)
Article
Chemistry, Physical
Hui Ming, Bo Yuan, Ge Qu, Zhoutong Sun
Summary: This study demonstrates the rational design and mutagenesis approach to improve the catalytic efficiency of engineered amine dehydrogenases. The best variant mh174 shows significantly enhanced efficiency and selectivity in the asymmetric reductive amination of hydroxyl ketones, and can be applied to a broad range of substrates.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Guangqi Li, Xuan Zhou, Zhihong Li, Yunpeng Liu, Dongyang Liu, Youzhi Miao, Qun Wan, Ruifu Zhang
Summary: This study characterized and engineered a thermophilic GH10 family xylanase XynAF1 to improve its thermostability, resulting in a 6-fold increase in stability through rational design and saturation mutagenesis. The high-resolution X-ray crystallographic structure of XynAF1 revealed a rigid skeleton contributing to its hyperthermophilic characteristics. The study provides a promising biocatalyst for high-temperature biotechnological applications.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2021)
Article
Agriculture, Multidisciplinary
Yangyang Li, Cen Li, Hao Huang, Shengqi Rao, Quan Zhang, Jingwen Zhou, Jianghua Li, Guocheng Du, Song Liu
Summary: This study enhanced the thermostability of an acid-resistant GH11 xylanase from Aspergillus niger AG11 through systematic modification, resulting in the variant xynAm1 with increased half-life and specific activity. XynAm1 exhibited the highest thermostability among reported xylanases and could be a robust candidate for various industrial applications.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Jia-Ren Cao, Fang-Fang Fan, Chang-Jiang Lv, Hong-Peng Wang, Ye Li, Sheng Hu, Wei-Rui Zhao, Hai-Bin Chen, Jun Huang, Le-He Mei
Summary: By introducing point mutations, the thermal stability of (R)-selective amine transaminase was improved, resulting in increased half-life at 40 degrees Celsius. Molecular dynamics simulations elucidated the mechanism behind these mutations, showcasing their impact on protein rigidity and stability.
FRONTIERS IN CHEMISTRY
(2021)
Article
Biochemistry & Molecular Biology
Licheng Zhou, Qing Meng, Ran Zhang, Bo Jiang, Qun Wu, Jingjing Chen, Tao Zhang
Summary: In this study, a comprehensive strategy was proposed to improve the thermostability of alginate lyase with strict substrate specificity. Through sequence-based and structure-based analysis, as well as computer-aided Delta Delta Gfold value calculation, four point mutations were selected and combined to generate a mutant with increased thermostability and retained enzyme activity.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Biotechnology & Applied Microbiology
Zhangliang Zhu, Lei Li, Wei Zhang, Chao Li, Shuhong Mao, Fuping Lu, Hui-Min Qin
Summary: The study identified a putative D-allulose 3-epimerase from a thermophilic organism and found that mutagenesis improved its catalytic efficiency towards D-fructose, showing potential as an industrial biocatalyst for D-allulose production.
ENZYME AND MICROBIAL TECHNOLOGY
(2021)
Article
Biochemical Research Methods
Jing Guo, Wenjun Gao, Xuan Zhang, Wenxin Pan, Xin Zhang, Zaiwei Man, Zhiqiang Cai
Summary: Catalysis activity and thermostability are important characteristics of enzymes. By mutating the C-terminal K242 of Bacillus subtilis chitosanase BsCsn46A, the K242P mutant showed significantly increased catalytic activity and thermostability, making it a potential candidate for industrial production of chitooligosaccharide (COS).
BIOTECHNOLOGY JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Pavlina Nekvasilova, Natalia Kulik, Michael Kotik, Lucie Petraskova, Kristyna Slamova, Vladimir Kren, Pavla Bojarova
Summary: By targeting a mutation hotspot on the active site, researchers successfully changed the substrate specificity of β-N-acetylhexosaminidase. The best single mutant variant showed an 8-fold increase in selectivity towards GlcNAc, and some variants exhibited stronger transglycosylation capabilities compared to the wild-type.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Agricultural Engineering
Xiaoyu Chen, Zhe Dou, Tianwei Luo, Zewen Sun, Hongmin Ma, Guochao Xu, Ye Ni
Summary: An effective protocol was developed for the directed resurrection of ancestral enzymes. A highly efficient ancestral enzyme A64 with high stability and catalytic promiscuity was successfully resurrected, which has potential applications in asymmetric synthesis of chiral alcohols.
BIORESOURCE TECHNOLOGY
(2022)
Article
Food Science & Technology
Xinyu Fan, Yajun Bai, Tai-Ping Fan, Xiaohui Zheng, Yujie Cai
Summary: The study revealed that Tyr53 is the key site determining the substrate specificity of the enzyme, and single-point mutagenesis can dramatically affect the catalytic efficiency for various other substrates.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Darly Concha, Karen Rodriguez-Nunez, Luis Castillo, Ronny Martinez, Claudia Bernal
Summary: This study demonstrates the potential enzymatic production of galactaric acid from galacturonic acid by protein engineering of glucose oxidase. Two variants of glucose oxidase with amino acid substitutions F414K and Y68W were identified and showed catalytic activity towards galacturonic acid with minimal glucose oxidation activity. Further experiments indicate structural and functional differences in the variants. Additionally, the study shows the possibility of simultaneous pectin depolymerization and galactaric acid production from citrus pectin using engineered glucose oxidases and pectinase.
BIOCHEMICAL ENGINEERING JOURNAL
(2022)
Article
Biotechnology & Applied Microbiology
Zhiwei Zhang, Yang Liu, Jing Zhao, Wenqiang Li, Ruiwen Hu, Xia Li, Aitao Li, Yaping Wang, Lixin Ma
Summary: This study successfully obtained OATA variants with high catalytic activity, which were applied in a reaction system to produce the chiral amine molecule L-ABA with a conversion efficiency of 94%.
Article
Biotechnology & Applied Microbiology
Chang-Jiang Lyu, Jia-Yan Fei, Jiang-Ping Yan, Qi-Chun Xu, Jia-Qi Mei, Hui-Ying Yue, Lu-Lu Chen, Le-He Mei, Jun Huang, Shan-Jing Yao
BIOCHEMICAL ENGINEERING JOURNAL
(2020)
Article
Multidisciplinary Sciences
Siyuan Liu, Xilun Xiang, Xiang Gao, Haiguang Liu
SCIENTIFIC REPORTS
(2020)
Article
Chemistry, Multidisciplinary
Xuanxuan Li, Chufeng Li, Haiguang Liu
ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES
(2020)
Article
Microbiology
Panpan Wang, Lu Liu, Aijun Liu, Liming Yan, Yong He, Shu Shen, Mingxu Hu, Yu Guo, Haiguang Liu, Chuang Liu, Yinying Lu, Peiyi Wang, Fei Deng, Zihe Rao, Zhiyong Lou
NATURE MICROBIOLOGY
(2020)
Article
Chemistry, Medicinal
Vikash Kumar, Hannah Hoag, Safaa Sader, Nicolas Scorese, Haiguang Liu, Chun Wu
JOURNAL OF CHEMICAL INFORMATION AND MODELING
(2020)
Article
Biochemistry & Molecular Biology
Ji-Hye Yun, Jae-Hyun Park, Zeyu Jin, Mio Ohki, Yang Wang, Cecylia Severin Lupala, Haiguang Liu, Sam-Yong Park, Weontae Lee
JOURNAL OF MOLECULAR BIOLOGY
(2020)
Article
Multidisciplinary Sciences
Liang Tian, Xuefei Li, Fei Qi, Qian-Yuan Tang, Viola Tang, Jiang Liu, Zhiyuan Li, Xingye Cheng, Xuanxuan Li, Yingchen Shi, Haiguang Liu, Lei-Han Tang
Summary: The text discusses the rapid spread of COVID-19 into a global pandemic within a short period of time, highlighting the challenges posed by transmission from pre-symptomatic and asymptomatic carriers. By constructing an epidemiological model focused on transmission around symptom onset, specific transmission control measures are explored to reduce the basic reproduction number R-0 and control virus spread. This modeling approach allows comparison of the pandemic's behavior in different regions and identifies both common and unique features in its development.
NATURE COMMUNICATIONS
(2021)
Article
Biochemistry & Molecular Biology
Abdullahi Ibrahim Uba, Nicolas Scorese, Emily Dean, Haiguang Liu, Chun Wu
Summary: This study constructed a full-length homology model of CRF1R and conducted molecular dynamics simulations of its complexes with agonist and antagonist, revealing important conformational changes in TMD and key residues. The observed dynamic rearrangements and residue interactions provide insights for ligand design targeting CRF1R activation.
ACS CHEMICAL NEUROSCIENCE
(2021)
Article
Biotechnology & Applied Microbiology
Changjiang Lyu, Lili Yao, Qi Zhu, Jiaqi Mei, Yucheng Cao, Sheng Hu, Weirui Zhao, Jun Huang, Lehe Mei, Shanjing Yao, Guocheng Du
Summary: In this study, the bioactive compound GABA was successfully biosynthesized using lactic acid bacteria as catalysts, overcoming the discrepancy in optimal pH for GAD activity and cell growth to achieve high GABA production. Enhanced GAD activity was achieved through protein engineering strategies, and a two-stage pH control strategy was employed to increase GABA yield, resulting in the highest yield obtained to date for GABA fermentation with Lactococcus lactis as a microbial cell factory.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Li-Li Yao, Jia-Ren Cao, Chang-Jiang Lyu, Fang-Fang Fan, Hong-Peng Wang, Hong-Wei Cao, Jun Huang, Le-He Mei
Summary: This study focuses on biosynthesis of food-grade GABA by immobilized glutamate decarboxylase from Lactobacillus plantarum in the rice vinegar and monosodium glutamate reaction system. The method of production GABA by immobilized GadB microspheres mixed in the reaction system is introduced for the first time. By regulating the amounts of catalyst microspheres, a certain concentration of GABA can be obtained.
BIOTECHNOLOGY LETTERS
(2021)
Article
Biology
Vikash Kumar, Haiguang Liu, Chun Wu
Summary: Our study utilized long molecular dynamics (MD) simulations to explore the conformational plasticity of the SARS-CoV-2 RBD, identifying representative conformations through clustering analysis. Screening FDA approved drugs against the predicted binding site at the ACE2-RBD interface yielded 18 drugs with top docking scores. Further investigation using MD simulations showed that 6 drugs exhibited stable binding with RBD at the ACE2-RBD interface, with 3 of them showing significantly enhanced binding after the simulations.
COMPUTERS IN BIOLOGY AND MEDICINE
(2021)
Article
Engineering, Chemical
Yujia Jiang, Haochen Qi, Jiayuan Wang, Xu Sun, Changjiang Lyu, Peng Lu, Ruiqin Yang, Aqsa Noreen, Chuang Xing, Noritatsu Tsubaki
Summary: This study proposes an ambient-pressure synthesis method for NaA zeolite by using a glass tube as a reactor and a low-density liquid as a sealant. Compared with the conventional hydrothermal process, this method offers advantages in terms of synthesis cost and safety.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Mathematical & Computational Biology
Cecylia S. Lupala, Xuanxuan Li, Jian Lei, Hong Chen, Jianxun Qi, Haiguang Liu, Xiao-Dong Su
Summary: A novel coronavirus (SARS-CoV-2) identified as the causal pathogen for COVID-19 utilizes the Angiotensin converting enzyme 2 protein (ACE2) as a receptor. Homology modeling and molecular dynamics simulation methods were used to study the ACE2 structure in complex with SARS-CoV-2 spike protein, revealing novel binding poses and critical residues at the complex interface.
QUANTITATIVE BIOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Yiran Qu, Innocent Bekard, Ben Hunt, Jamie Black, Louis Fabri, Sally L. Gras, Sandra. E. Kentish
Summary: This study compares the performance of a nanofiber device and a resin column for antibody capture. The nanofiber device has a larger housing volume and lower binding capacity, but comparable eluate purity to the resin column. It shows high stability, can be used for multiple cycles, and maintains consistent eluate quality when scaled up. The use of a single nanofiber device can significantly reduce costs compared to a resin column, especially when the number of batches is limited.
BIOCHEMICAL ENGINEERING JOURNAL
(2024)
Article
Biotechnology & Applied Microbiology
Brandon Moore, Christos Georgakis, Chris Antoniou, Sarwat Khattak
Summary: Fed-batch cell culture processes are commonly used in biomanufacturing due to their simplicity and applicability in cGMP environments. However, the challenge lies in the changing physiochemical conditions within the bioreactor as the cell density changes. Traditional response surface models (RSMs) are commonly used for optimization but are limited by their use of time-invariant factors. Dynamic RSM (DRSM) models can predict the time-dependent impact of process inputs, allowing for optimization of process operations that change over time.
BIOCHEMICAL ENGINEERING JOURNAL
(2024)
Article
Biotechnology & Applied Microbiology
Lin Li, Yunfan Bai, Chuhua Qi, Yile Du, Xiaoxiao Ma, Yutong Li, Pingping Wu, Shuangli Chen, Sijing Zhang
Summary: A succinic anhydride-modified apple pomace (SAMAP) was synthesized to address environmental issues caused by the accumulation of apple pomace and effectively treat heavy metal ions. SAMAP exhibited high adsorption capacity for Cu(II) and Pb(II), suggesting its potential application in wastewater treatment.
BIOCHEMICAL ENGINEERING JOURNAL
(2024)
Article
Biotechnology & Applied Microbiology
Peter Satzer
Summary: Water for injection (WFI) production in the biopharmaceutical industry consumes excessive amounts of water and energy. Recycling buffers can potentially save up to 90% of resources, but achieving the full theoretical potential is impossible when a risk-aware design is used. Universal risk-based assessment is important for regulatory authorities to consider the implementation of such a strategy.
BIOCHEMICAL ENGINEERING JOURNAL
(2024)
Article
Biotechnology & Applied Microbiology
Gaoya Sun, Lingkai Jin, Guangxue Wang, Xiaoge Wang, Jin Huang
Summary: In this study, heterologous expression and homologous overexpression of ABC transporter proteins AatA and MdlB were found to improve butyric acid production in C. tyrobutyricum. The overexpression of these proteins upregulated the expression levels of key enzymes in the acetate synthesis pathway and promoted the synthesis and secretion of acetic acid. Additionally, the increase in ATPase activity facilitated sugar utilization, induced extracellular secretion of acetate, and shortened fermentation periods.
BIOCHEMICAL ENGINEERING JOURNAL
(2024)
Article
Biotechnology & Applied Microbiology
Taiki Okamura, Rina Aritomi, Takuya Matsumoto, Ryosuke Yamada, Hidehiko Hirakawa, Hiroyasu Ogino
Summary: In this study, proline was introduced to improve the stability of putidaredoxin reductase (PdR) in the Pseudomonas putida cytochrome P450 system. It was found that PdR_T221P had a longer half-life at high temperatures compared to wild-type PdR, but a shorter half-life in the presence of methanol. Molecular dynamics simulations supported these findings.
BIOCHEMICAL ENGINEERING JOURNAL
(2024)
Article
Biotechnology & Applied Microbiology
Yuying Hu, Xiaofan Wang, Shihao Zhang, Zimu Liu, Tengfang Hu, Xin Wang, Xiaoming Peng, Hongling Dai, Jing Wu, Fengping Hu
Summary: This study investigates the effect of iron-carbon micro-electrolysis (ICME) materials on high-solid anaerobic digestion (HSAD). The results show that ICME materials promote methane production in HSAD by increasing the attachment area of microorganisms and facilitating symbiotic metabolism of certain bacterial species. This study provides new insights into microbial mechanisms and enhances our understanding of ICME material enhancement in HSAD.
BIOCHEMICAL ENGINEERING JOURNAL
(2024)
Article
Biotechnology & Applied Microbiology
Jibao Liu, Yufeng Xu, Yuansong Wei
Summary: This study investigated the role of sludge rheology in anaerobic digestion (AD) and found that rheological properties increased with the increase of solid content, resulting in a negative effect on methane production. An extended ADM1 model revealed that enhanced sludge rheological properties increased mass diffusion resistance and reduced uptake rate of acetate.
BIOCHEMICAL ENGINEERING JOURNAL
(2024)
Article
Biotechnology & Applied Microbiology
Xiaoyan Liu, Zongze Chen, Dewen Kong, Xinying Zhang, Chuanhua Wang, Yongqi Wang
Summary: This study explored the role of intracellular and extracellular enzymes of Acinetobacter baumannii and Talaromyces sp. in the degradation of crude oil. The extracellular enzymes of Talaromyces sp. were more effective in degrading n-alkanes, while those of Acinetobacter baumannii had a better effect on aromatic hydrocarbons. The degradation enzyme systems of both bacteria and fungi complemented each other, improving the overall degradation ability.
BIOCHEMICAL ENGINEERING JOURNAL
(2024)
Article
Biotechnology & Applied Microbiology
Jing Dong, Lingli Xu, Yuxiang Liu, Li Ren, Ke Yuan
Summary: The utilization of biochar-immobilized microorganisms is an effective method for eliminating phenol from water. The high susceptibility of bacteria to environmental factors is a challenge for practical implementation. In this study, biochar was used to reduce microbial susceptibility and enhance phenol removal. The addition of biochar altered the dominant species of phenol-degrading bacteria and response surface analysis indicated the significant influence of biochar pyrolysis temperature and experimental temperature on phenol removal rate.
BIOCHEMICAL ENGINEERING JOURNAL
(2024)
Article
Biotechnology & Applied Microbiology
Zibin Pan, Mengying Liu, Zuliang Chen
Summary: This study successfully removed metalloids and heavy metals from acid mine drainage (AMD) using bio-synthesized Fe/Cu nanoparticles (Fe/Cu NPs). The Fe/Cu NPs showed high removal capacities and the presence of organic substances contributed to their stability.
BIOCHEMICAL ENGINEERING JOURNAL
(2024)
Article
Biotechnology & Applied Microbiology
Guangbing Liu, Han Zhang, Jincan Huang, Lu Zhang, Teng Zhang, Xuemin Yu, Weijing Liu, Chunkai Huang
Summary: This study investigated the effect of Fenton pre-treatment on the treatment efficiency of printing and dyeing wastewater (PDW) using two anaerobic/aerobic-membrane bioreactors (A/O-MBRs). The results showed that Fenton pre-treatment significantly improved the removal efficiency of COD and AOX in PDW, and reduced membrane fouling. The Shannon indices and metagenomics analysis indicated that the microbial diversity in anaerobic flocs was higher than that in aerobic flocs, and EC3.1.1.45 and pcaI were identified as key functional genes.
BIOCHEMICAL ENGINEERING JOURNAL
(2024)
Article
Biotechnology & Applied Microbiology
Lidia Borgosz, Duygu Dikicioglu
Summary: The Industrial Internet of Things (IIoT) is a system that connects devices and provides real-time insight into industrial processes. However, the complexity and regulatory requirements of the biomanufacturing sector make it challenging to implement IIoT. There is a need for universal solutions to overcome this challenge and advance the field of biomanufacturing.
BIOCHEMICAL ENGINEERING JOURNAL
(2024)
Article
Biotechnology & Applied Microbiology
Yajie Li, Weikang Kong, Yuyao Zhang, Huarui Zhou, Hongbo Liu, Salma Tabassum
Summary: In this study, the iron-carbon multi-micro electric field coupling anaerobic co-digestion technique was used to treat coal gasification wastewater (CGW). The experimental results showed that under optimal operating conditions, this technique can significantly reduce the toxicity of the wastewater and achieve high removal efficiencies. Additionally, the analysis of microbial communities revealed that the coupling system promotes direct interspecies electron transfer.
BIOCHEMICAL ENGINEERING JOURNAL
(2024)
Article
Biotechnology & Applied Microbiology
Aparecido Nivaldo Modenes, Debora Gozzi Fernandes, Daniela Estelita Goes Trigueros, Matheus Guilherme Amador, Fernando Rodolfo Espinoza-Quinones, Taysa de Souza Braniz, Adilson Ricken Schuelter, Glacy Jaqueline da Silva, Lucimar Pereira Bonett
Summary: This study aimed to systematically remove organic pollutants from raw dairy wastewater with high concentrations of COD, TOC, and TN using Poterioochromonas malhamensis algae strains. The results showed that the biomass yield rate using FP-PBRs was 10% higher than tubular PBRs, and the organic pollution in wastewater was significantly reduced with a decrease of about 98% in COD, 95% in TN, and 92% in TOC.
BIOCHEMICAL ENGINEERING JOURNAL
(2024)