Results 41 to 50 of about 144,728 (208)

The Haemophilus influenzae HipBA toxin–antitoxin system adopts an unusual three-component regulatory mechanism

IUCrJ, 2022
Type II toxin–antitoxin (TA) systems encode two proteins: a toxin that inhibits cell growth and an antitoxin that neutralizes the toxin by direct intermolecular protein–protein interactions.
Ji Sung Koo, Sung-Min Kang, Won-Min Jung, Do-Hee Kim, Bong-Jin Lee   +4 more
doaj   +1 more source

Structural Basis of Shiga Toxin Neutralization by Human Antibodies Targeting Canonical Receptor‐Binding and Non‐Canonical Assembly Sites

Advanced Science, EarlyView.
Cryo‐electron microscopy structures reveal two distinct neutralization mechanisms of fully human monoclonal antibodies targeting the Shiga toxin 1a B subunit. RDS059 occludes the Gb3 receptor‐binding site, whereas RDS045 engages a lateral quaternary epitope to disrupt holotoxin assembly.
Jianting Ke, Xin Li, Xiaoli Wang, Zhaoxia Huang, Shaojie Xue, Yuyang Liu, Jing Pan, Guowei Hu, Yayu Wang, Cheng Wang, Shoudeng Chen   +10 more
wiley   +1 more source

Phase I Evaluation of Siltartoxatug, a First‐in‐Class Anti‐Tetanus Monoclonal Antibody: Safety, Pharmacokinetics and Pharmacodynamics in Healthy Australian and Chinese Populations

Clinical Pharmacology &Therapeutics, EarlyView.
Siltartoxatug, a first‐in‐class monoclonal antibody targeting tetanus toxin for post‐exposure prophylaxis, was evaluated in two phase I trials in Australian and Chinese healthy adults. In these randomized, double‐blind, placebo‐controlled, dose‐escalation studies, participants received a single intramuscular injection of siltartoxatug (10–250 μg/kg) or
Xinyu Liu, Zhigang Liu, Xiaohu Kuang, Yueming Wang, Xiaoyi Liu, Jiyuan Ding, Xia Zhou, Xin Zhou, Qianyu Liang, Meizhuo Zhang, Hao Zhao, Qingqing Tan, Weihong Zheng, Huaxin Liao, Charlotte Lemech, Wanmei Wang   +15 more
wiley   +1 more source

Hypothetical Functions of Toxin-Antitoxin Systems [PDF]

Journal of Bacteriology, 2007
Toxin-antitoxin systems are very commonly found both on large, low-copy plasmids, where they increase effective stability ([35][1]), and on bacterial chromosomes, where their function has been the subject of considerable speculation.
openaire   +2 more sources

The Biochemistry of VapBC Toxin-Antitoxins [PDF]

, 2011
The VapBC toxin-antitoxin (TA) systems were first identified in 2005 and little is known about their contemporary biological function, despite the fact that VapBC TAs are the largest TA family and are widespread in bacteria and archaea (Arcus, Rainey ...
McKenzie, Joanna Leigh
core  

Structure, Evolution, and Functions of Bacterial Type III Toxin-Antitoxin Systems

Toxins, 2016
Toxin-antitoxin (TA) systems are small genetic modules that encode a toxin (that targets an essential cellular process) and an antitoxin that neutralises or suppresses the deleterious effect of the toxin.
Nathalie Goeders, Ray Chai, Bihe Chen, Andrew Day, George P. C. Salmond   +4 more
doaj   +1 more source

A toxin-deformation dependent inhibition mechanism in the T7SS toxin-antitoxin system of Gram-positive bacteria

Nature Communications, 2022
Antimicrobial toxins are secreted by bacteria to kill rival species. Here the authors report the mechanism of inhibition of EsaD, a toxin secreted by some S.
Yongjin Wang, Yang Zhou, Chaowei Shi, Jiacong Liu, Guohua Lv, Huisi Huang, Shengrong Li, Liping Duan, Xinyi Zheng, Yue Liu, Haibo Zhou, Yonghua Wang, Zhengqiu Li, Ke Ding, Pinghua Sun, Yun Huang, Xiaoyun Lu, Zhi-Min Zhang   +17 more
doaj   +1 more source

Stay or Go: Sulfolobales Biofilm Dispersal Is Dependent on a Bifunctional VapB Antitoxin

mBio, 2023
A type II VapB14 antitoxin regulates biofilm dispersal in the archaeal thermoacidophile Sulfolobus acidocaldarius through traditional toxin neutralization but also through noncanonical transcriptional regulation.
April M. Lewis, Daniel J. Willard, Mohamad J. H. Manesh, Shamphavi Sivabalasarma, Sonja-Verena Albers, Robert M. Kelly   +5 more
doaj   +1 more source

Vaginal host–microbe signatures linked to placental outcomes in mares

Equine Veterinary Journal, EarlyView.
Abstract Background Ascending placentitis is a leading cause of late‐term pregnancy loss in mares. Although pathogens are presumed to ascend from the caudal reproductive tract, the association between the vaginal microbiome and placentitis has not been systematically examined.
Machteld van Heule, Babiche Heil, Jamie K. Norris, Kristene Gedye, Xiaoxiao Lin, Ward De Spiegelaere, Peter Daels, Pouya Dini   +7 more
wiley   +1 more source

Engineering Bacteria for Medicine: Delivery, Diagnosis, and Therapy

iMetaMed, EarlyView.
ABSTRACT With rapid advances in synthetic biology and genetic engineering, genetically engineered bacteria (GEB) have emerged as a promising platform for biological therapy, addressing key limitations of conventional drug delivery systems and demonstrating significant clinical potential.
Shiyu Xia, Guiling Fu, Xiaoyue Ding, Wen Yang, Ruijie Bai, Yawei Cai, Jing xuan Zhang, Yanxia Wei, Conghui Han, Yi‐Zhou Gao, Ying Li, Zuobin Zhu   +11 more
wiley   +1 more source