Review
Biotechnology & Applied Microbiology
Hoai T. Tran, Carla Y. Bonilla
Summary: Oxidative stress can be lethal for organisms if not responded to properly. Bacterial species activate transcriptional profiles to reduce oxidized components and detoxify harmful metabolites in response to oxidative stress. The general stress response controlled by SigB in Gram positive bacteria helps the adaptation to oxidative stress, with some regulated genes showing antioxidant biochemical activities.
WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Karen Abundiz-Yanez, Hilda C. Leyva-Sanchez, Eduardo A. Robleto, Mario Pedraza-Reyes
Summary: A study investigated the role of c-di-AMP in stress-associated mutagenesis (SAM) and growth-associated mutagenesis (GAM) in B. subtilis. The results showed that DACs, CdaA and DisA, played important roles in cell wall homeostasis and chromosomal fidelity, and counteracted mutagenesis in growing cells. However, deficiencies in DACs caused opposite effects under oxidative stress. DACs also promoted mutations under nutritional stress in the stationary phase. The study suggests that c-di-AMP is involved in promoting genetic diversity in growth-limiting conditions.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Multidisciplinary Sciences
Kaito Kikuchi, Leticia Galera-Laporta, Colleen Weatherwax, Jamie Y. Lam, Eun Chae Moon, Emmanuel A. Theodorakis, Jordi Garcia-Ojalvo, Gurol M. Suel
Summary: Despite their dormant state, bacterial spores are able to sense environmental signals through a preexisting electrochemical potential and integrate these signals over time, affecting their decision to exit dormancy.
Article
Microbiology
Kimihiro Abe, Masanori Toyofuku, Nobuhiko Nomura, Nozomu Obana
Summary: Bacillus subtilis releases membrane vesicles (MVs) under various stress conditions, with autolysins playing a key role in this process. The autolysis serves as a novel and prophage-independent pathway for MV production in B. subtilis. Exogenous purified MVs can effectively neutralize cell damage induced by surfactant treatment.
ENVIRONMENTAL MICROBIOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Pengjie Sun, Changgeng Li, Yu Gong, Jinduo Wang, Qingyang Xu
Summary: In this study, ceramic membrane-coupled mixed cell fermentation was used to improve the production efficiency and purity of adenine. By optimizing the ultrasound treatment and the timing of enzyme addition, the yield of adenine was significantly increased while reducing the production of by-products.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Immunology
Meiling Chen, Nengfeng Lin, Xiande Liu, Xin Tang, Zhiyong Wang, Dongling Zhang
Summary: In this study, a novel antimicrobial peptide Lc1687 was screened and found to exhibit strong activities against both Gram-positive and Gram-negative bacteria. It was derived from the C-terminal of a Ferritin heavy subunit and showed stability and potential for clinical medicine development.
FRONTIERS IN IMMUNOLOGY
(2023)
Article
Mathematical & Computational Biology
Juan D. Tibocha-Bonilla, Cristal Zuniga, Asama Lekbua, Colton Lloyd, Kevin Rychel, Katie Short, Karsten Zengler
Summary: Bacillus subtilis, a well-characterized microorganism, has been used as a model for studying Gram-positive bacteria. Metabolic modeling has helped optimize its metabolism for various applications, but traditional models are not suitable for simulating protein production and proteomic response to stress. In this study, a new metabolism and gene expression model (ME-model) of B. subtilis, iJT964-ME, was reconstructed and validated. The model outperformed previous models in predicting gene essentiality and was successfully validated using physiological and omics data. Furthermore, the model identified the mechanism behind the upregulation of tryptophan synthesis under ethanol stress and predicted amylase production rates under different growth conditions.
NPJ SYSTEMS BIOLOGY AND APPLICATIONS
(2022)
Article
Microbiology
Aysegul Oktem, David Nunez-Nepomuceno, Borja Ferrero-Bordera, Jonathan Walgraeve, Michael Seefried, Manuela Gesell Salazar, Leif Steil, Stephan Michalik, Sandra Maass, Doerte Becher, Ulrike Maeder, Uwe Voelker, Jan Maarten van Dijl
Summary: This study reveals that modulation of the protease activity of HtrA, rather than complete removal, can limit the effects of secretion stress and improve bacterial fitness and enzyme yields.
MICROBIOLOGY SPECTRUM
(2023)
Article
Veterinary Sciences
Karin Allenspach, Chi-Hsuan Sung, Jose Joaquin Ceron, Camila Peres Rubio, Agnes Bourgois-Mochel, Jan S. Suchodolski, Lingnan Yuan, Debosmita Kundu, Joan Colom Comas, Kieran Rea, Jonathan P. Mochel
Summary: This study investigated the effects of DE-CA9 (TM) on healthy Beagle dogs and found that it can reduce oxidative stress markers and have positive effects on protein and lipid metabolism in serum and feces.
VETERINARY SCIENCES
(2023)
Article
Biochemistry & Molecular Biology
Aniruddha Tewary, Ranjit Kumar Prajapati, Jayanta Mukhopadhyay
Summary: The C-terminal domain of the α subunit of RNA polymerase is targeted by transcriptional regulators in the activation of transcription. In bacteria, the regulator binds to DNA at different sites and interacts with the α CTD to stabilize the RNA polymerase at the promoter or form a pre-recruitment complex. In B. subtilis, the binding of RNA polymerase at the promoter stabilizes the transcriptional regulator and facilitates open complex formation. Two residues of the α CTD are essential for this process.
JOURNAL OF MOLECULAR BIOLOGY
(2023)
Article
Agriculture, Dairy & Animal Science
Xinyu Zou, Sha Jiang, Mi Zhang, Haiqiang Hu, Xiaoling Wu, Jianzhu Liu, Meilan Jin, Hengwei Cheng
Summary: The study found that Bacillus subtilis could increase marketable egg production, protect bone health, alter the distribution of phosphorus, increase estrogen but decrease interleukin-1 and tumor necrosis factor-alpha concentrations. These results suggest that Bacillus subtilis could be utilized as a health promotor to mitigate overproduction-induced inflammation and associated bone damage in laying hens, improving both egg production and overall welfare.
Article
Microbiology
Yifan Fu, Qinggang Guo, Lihong Dong, Xiaomeng Liu, Xiuye Chen, Peipei Wang, Zhenhe Su, Ping Ma
Summary: This study characterizes the regulatory mechanism of the PhoPR two-component system (TCS) in Bacillus subtilis, showing its role in the regulation of fengycin production through the biosynthesis of branched chain amino acids (BCAAs). These findings provide insights into the signaling pathway involved in the phosphate starvation response and the production of antibiotics in bacteria.
MICROBIOLOGICAL RESEARCH
(2022)
Article
Biochemistry & Molecular Biology
Jing Shi, Fangfang Li, Aijia Wen, Libing Yu, Lu Wang, Fulin Wang, Yuanling Jin, Sha Jin, Yu Feng, Wei Lin
Summary: The study reveals the critical role of Spx in bacterial transcription activation, demonstrating its interaction with RNA polymerase and promoter DNA through multiple interfaces to facilitate transcription initiation.
NUCLEIC ACIDS RESEARCH
(2021)
Article
Microbiology
Lars Lilge, Nadine Ersig, Philipp Hubel, Moritz Aschern, Evelina Pillai, Peter Klausmann, Jens Pfannstiel, Marius Henkel, Kambiz Morabbi Heravi, Rudolf Hausmann
Summary: Surfactin is a powerful biosurfactant with antimicrobial properties. However, the growth-reducing effects of surfactin on Bacillus subtilis and Escherichia coli were found to be relatively weak compared to other antimicrobial biosurfactants. Pseudomonas putida showed no specific response to surfactin treatment.
Article
Biochemistry & Molecular Biology
Jaewan Park, Junghun Kim, Zion Choi, Minsun Hong
Summary: Bacillus subtilis expresses flavonoid-detoxifying enzymes to counteract the antibacterial effects of flavonoids, and their expression is negatively regulated by transcription factors including YetL. The crystal structure of YetL is reported in this study, along with a proposed flavonoid-induced regulatory mechanism.
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
(2022)
Article
Biochemistry & Molecular Biology
Maria C. Davis, Christopher A. Kesthely, Logan K. Smith, Jillian Breen, Shawn R. MacLellan
CANADIAN JOURNAL OF MICROBIOLOGY
(2015)
Article
Microbiology
Xiaowei Xue, Maria C. Davis, Thomas Steeves, Adam Bishop, Jillian Breen, Allison MacEacheron, Christopher A. Kesthely, FoSheng Hsu, Shawn R. MacLellan
Article
Chemistry, Physical
Bradley Scott, Jeff Crouse, Maria Correia, Laisheng Sun, Gilles Villemure
APPLIED CLAY SCIENCE
(2010)
Letter
Biochemistry & Molecular Biology
Maria C. Davis, Josie Libertucci, Yanelis Acebo Guerrero, Heather Dietz, Tanya C. Noel, Joseph E. Rubin, Nicole Sukdeo
CANADIAN JOURNAL OF MICROBIOLOGY
(2020)
Letter
Biochemistry & Molecular Biology
Tanya C. Noel, Joseph E. Rubin, Yanelis Acebo Guerrero, Maria C. Davis, Heather Dietz, Josie Libertucci, Nicole Sukdeo
CANADIAN JOURNAL OF MICROBIOLOGY
(2020)
Article
Ecology
Laura J. Schnell, Gavin L. Simpson, Danae M. Suchan, William Quere, Harold G. Weger, Maria C. Davis
Summary: The report introduces a way for students to have hands-on research experience remotely during the COVID-19 pandemic, aiming to help them learn and practice scientific research skills effectively.
ECOLOGY AND EVOLUTION
(2021)
Review
Biochemistry & Molecular Biology
Maria C. Davis, Christopher A. Kesthely, Emily A. Franklin, Shawn R. MacLellan
CANADIAN JOURNAL OF MICROBIOLOGY
(2017)
Article
Chemistry, Multidisciplinary
Jun Yoshida, Kazuko Saruwatari, Jun Kameda, Hisako Sato, Akihiko Yamagishi, Laisheng Sun, Maria Corriea, Gilles Villemure