Peptidoglycan recognition proteins (PGRPs) are a family of pattern recognition receptors (PRRs) involved in host antibacterial responses, and their functions have been characterized in most invertebrate and vertebrate animals. However, little information is available regarding the potential function of PGRPs in the giant triton snail . In this study, a short-type PGRP gene (termed ) was identified in . Ct-PGRP-S1 was predicted to contain several structural features known in PGRPs, including a typical PGRP domain (Amidase_2) and Src homology-3 (SH3) domain. The gene was constitutively expressed in all tissues examined except in proboscis, with the highest expression level observed in the liver. As a typical PRR, Ct-PGRP-S1 has an ability to degrade peptidoglycan (PGN) and was proven to have non-Zn-dependent amidase activity and antibacterial activity against and . It is the first report to reveal the peptidoglycan recognition protein in , and these results suggest that peptidoglycan recognition protein Ct-PGRP-S1 is an important effector of that modulates bacterial infection resistance of and , and this study may provide crucial basic data for the understanding of an innate immunity system of .
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http://dx.doi.org/10.3390/ijms231911062 | DOI Listing |
Int J Biol Macromol
January 2025
Center of Infectious Diseases, Division of Infectious Diseases in State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China. Electronic address:
Archaeal peptidoglycan, a crucial component of the cell walls of Methanobacteria and Methanopyri, enhances the tightness of methanogenic cells and their resistance to known lytic enzymes and antibiotics. Although archaeal peptidoglycan endoisopeptidases (Pei) can reportedly degrade archaeal peptidoglycan, their biochemistry is still largely unknown. In this study, we investigated the activity and catalytic properties of the endoisopeptidases PeiW and PeiP using synthesized isopeptides identical to natural substrates.
View Article and Find Full Text PDFAnal Biochem
January 2025
Laboratorio de Biología Estructural y Molecular BEM, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425 Ñuñoa, Santiago, 7800003, Chile; Laboratorio de Biotecnología Vegetal y Ambiental Aplicada, Universidad Tecnológica Metropolitana, Santiago, Chile.
FtsZ is a bacterial protein that plays a crucial role in cytokinesis by forming the Z-ring. This ring acts as a scaffold to recruit other division proteins and guide the synthesis of septal peptidoglycan, which leads to cell constriction. In its native state, the FtsZ protein from Escherichia coli (EcFtsZ) is a multi-oligomer comprising dimers, trimers, tetramers, and hexamers in a dynamic self-association equilibrium depending on its concentration.
View Article and Find Full Text PDFFood Res Int
January 2025
State Key Laboratory of Marine Food Processing and Safety Control, Dalian Polytechnic University, Dalian 116034, Liaoning, China. Electronic address:
The acidophilic and heat-resistant characteristics of Alicyclobacillus acidoterrestris (A. acidoterrestris) pose significant challenges to fruit juice production. Traditional thermal removal methods are often ineffective against this resilient bacterium.
View Article and Find Full Text PDFPLoS Biol
January 2025
State Key Laboratory of Genetic Engineering, School of Life Sciences, Department of Infectious Diseases, Zhongshan Hospital, Fudan University, Shanghai, China.
The peritrophic matrix (PM) acts as a physical barrier that influences the vector competence of mosquitoes. We have previously shown that gut microbiota promotes PM formation in Anopheles stephensi, although the underlying mechanisms remain unclear. In this study, we identify that the cell wall components of gut commensal bacteria contribute to PM formation.
View Article and Find Full Text PDFInt J Biol Macromol
January 2025
Key Laboratory of Agricultural Biosafety and Green Production of Upper Yangtze River, Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing 400716, China; Yibin Academy of Southwest University, Yibin 644000, China. Electronic address:
Compared with traditional biological control, the co-use of entomopathogenic fungi and multiple enemies has made great progress in biocontrol technology. However, the risk posed by entomopathogenic fungi to their host has not been fully evaluated. Further, the interaction between them has not described adequately.
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