The tertiary and quaternary structures of many proteins are stabilized by strong covalent forces, of which disulfide bonds are the most well known. A new type of intramolecular and intermolecular covalent bond has been recently reported, consisting of the Lys and Cys side-chains linked by an oxygen atom (NOS). These post-translational modifications are widely distributed amongst proteins, and are formed under oxidative conditions. Similar linkages are observed during antibiotic biosynthesis, where hydroxylamine intermediates are tethered to the sulfur of enzyme active site Cys residues. These linkages open the way to understanding protein structure and function, give new insights into enzyme catalysis and natural product biosynthesis, and offer new strategies for drug design.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1039/d4cc03191a | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Segment specific loss of NFAT5 function in the kidneys is sufficient to induce a global kidney injury like phenotype.
FASEB J
January 2025
Department of Medicine, Hematology and Oncology, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany.
Nuclear factor of activated T-cells 5 (NFAT5) is a transcription factor known for its role in osmotic stress adaptation in the renal inner medulla, due to the osmotic gradient that is generated between the renal cortex and renal inner medulla. However, its broader implications in kidney injury and chronic kidney disease (CKD) are less understood. Here we used two different Cre deleter mice (Ksp1.
View Article and Find Full Text PDFA review on amino acids as proxies for organic matter degradation in aquatic ecosystems: implications for nutrient cycling, climate change, and ecosystem management.
Environ Sci Pollut Res Int
January 2025
Centre of Research for Development, University of Kashmir, Srinagar, 190006, India.
The fate and degradation of organic matter in aquatic systems is a vital link in nutrient cycling and sedimentation processes influenced by exogenous and endogenous factors, such as inputs from upstream sources, sediment suspension, and the decomposition of aquatic organisms. The interplay of organic carbon, microbes, and environmental factors shapes the distribution and degradation of organic matter. Characterizing the source distribution of sedimentary organic matter in aquatic systems using novel proxies can unravel new insights into the mechanisms that control its dispersal, preservation and fate, which is essential to understanding the global carbon and nitrogen cycles.
View Article and Find Full Text PDFRelationships between nutritional status and serum adipokine levels with chemotherapy efficacy in late-stage colorectal cancer patients.
Int J Colorectal Dis
January 2025
Department of Infectious Diseases (Hepatology), Affiliated Hospital of Shaoxing University, 999 Zhongxing South Road, Shaoxing, 312000, Zhejiang, China.
Objective: Colorectal cancer (CRC) is a common cancer, with chemotherapy as its major therapy. Nutritional status (NS) and adipokines implicated in CRC. We explored the impacts of NS indicators (hemoglobin, albumin, and prealbumin) and serum adipokine (visfatin, adiponectin, and resistin) level on chemotherapy efficacy in late-stage CRC patients.
View Article and Find Full Text PDFInoculum selection and hydraulic retention time impacts in a microbial fuel cell treating saline wastewater.
Appl Microbiol Biotechnol
January 2025
Environmental Microbiology Group, Institute of Water Research, University of Granada, 18003, Granada, Spain.
Microbial fuel cell (MFC) technology has received increased interest as a suitable approach for treating wastewater while producing electricity. However, there remains a lack of studies investigating the impact of inoculum type and hydraulic retention time (HRT) on the efficiency of MFCs in treating industrial saline wastewater. The effect of three different inocula (activated sludge from a fish-canning industry and two domestic wastewater treatment plants, WWTPs) on electrochemical and physicochemical parameters and the anodic microbiome of a two-chambered continuous-flow MFC was studied.
View Article and Find Full Text PDFEarly transcriptional effects of inflammatory cytokines reveal highly redundant cytokine networks.
J Exp Med
April 2025
Department of Immunology, Harvard Medical School, Boston, MA, USA.
Inflammatory cytokines are fundamental mediators of the organismal response to injury, infection, or other harmful stimuli. To elucidate the early and mostly direct transcriptional signatures of inflammatory cytokines, we profiled all immunologic cell types by RNAseq after systemic exposure to IL1β, IL6, and TNFα. Our results revealed a significant overlap in the responses, with broad divergence between myeloid and lymphoid cells, but with very few cell-type-specific responses.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!