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Investigation into the effect of phenylalanine gating on anaerobic haem breakdown using the energy landscape approach.
Protein Sci
February 2025
Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK.
We have recently demonstrated a novel anaerobic NADH-dependent haem breakdown reaction, which is carried out by a range of haemoproteins. The Yersinia enterocolitica protein, HemS, is the focus of further research presented in the current paper. Using conventional experimental methods, bioinformatics, and energy landscape theory (ELT), we provide new insight into the mechanism of the novel breakdown process.
View Article and Find Full Text PDFAnalysis of the Transcriptome Provides Insights into the Photosynthate of Maize Response to Salt Stress by 5-Aminolevulinic Acid.
Int J Mol Sci
January 2025
Institute of Cereal Crops, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China.
Salt stress is a significant environmental factor that impedes maize growth and yield. Exogenous 5-aminolevulinic acid (ALA) has been shown to mitigate the detrimental effects of various environmental stresses on plants. However, its regulatory role in the photosynthesis mechanisms of maize seedlings under salt stress remains poorly understood.
View Article and Find Full Text PDFPhotosensitizable ZIF-8 BioMOF for Stimuli-Responsive Antimicrobial Phototherapy.
Mol Pharm
January 2025
Department of Nanomaterials and Application Technology, Center of Innovative and Applied Bioprocessing (CIAB), Department of Biotechnology (DBT), Government of India, Sector 81 (Knowledge City), S.A.S. Nagar, Mohali 140306, Punjab, India.
Resistant pathogens are increasingly posing a heightened risk to healthcare systems, leading to a growing concern due to the lack of effective antimicrobial treatments. This has prompted the adoption of antimicrobial photodynamic therapy (aPDT), which eradicates microorganisms by generating reactive oxygen species (ROS) through the utilization of a photosensitizer, photons, and molecular oxygen. However, a challenge arises from the inherent characteristics of photosensitizers, including photobleaching, aggregation, and self-quenching.
View Article and Find Full Text PDFPromoting the Efficacy of Deferiprone-Gallium-Protoporphyrin (IX) against Intracellular Infection with Lipid Liquid Crystalline Nanoparticles.
ACS Appl Mater Interfaces
December 2024
Department of Surgery-Otolaryngology Head and Neck Surgery, Basil Hetzel Institute for Translational Health Research, Central Adelaide Local Health Network, Adelaide 5011, Australia.
Nontuberculous mycobacteria (NTM) are among the recalcitrant bacterial strains that cause difficult-to-treat infections for patients with chronic underlying pulmonary conditions. The bacteria's intrinsic resistance to various antibiotics and their ability to infect macrophages enable them to overcome both the host immune response and standard antibiotics. Unconventional approaches to treating NTM-mediated infections are required.
View Article and Find Full Text PDFNonlinear van't Hoff Behavior in the Interaction of Two Water-Soluble Porphyrins with Bovine Serum Albumin (BSA).
ACS Omega
December 2024
Instituto de Física, Universidade Federal de Goiás, Goiânia, Goiás 74690-900, Brazil.
Thermodynamic analysis of the binding process of water-soluble negatively charged -tetrakis(-sulfonatophenyl) (TPPS) and positively charged -tetrakis(4-methylpyridyl) (TMPyP) porphyrins with bovine serum albumin (BSA) at different temperatures was carried out based on the data of BSA quenching fluorescence by porphyrins. The comparison of binding constants ( ) shows that negatively charged TPPS possesses higher affinity to BSA than positively charged TMPyP. Thermodynamic characteristics of the binding process were obtained in accordance with the van't Hoff theory by processing nonlinear dependences of ln on inverse absolute temperature within the framework of two models: taking into account the dependence or independence of the change in the standard heat capacity (Δ ) on temperature.
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