Putting a number on it: Cleavable linkers are widely utilized in proteomics applications. In particular, the azobenzene-based linker cleaves under mild conditions that are mass-spectrometry-compatible. Here, we adapt this linker for quantitative proteomic applications by incorporating an isotopic label. These light- and heavy-tagged linkers enable the identification and quantitation of labeled peptides from multiple proteomes.
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http://dx.doi.org/10.1002/cbic.201300396 | DOI Listing |
Dalton Trans
January 2025
Institute for Organic Synthesis and Photoreactivity (ISOF) - National Research Council (CNR), Via P. Gobetti 101, 40129 Bologna, Italy.
A supramolecular system, consisting of a tetrapyrenylporphyrinic core surrounded by arene-ruthenium prisms, has been assembled and characterized by means of electrochemical and photophysical techniques. The photophysical study shows that quantitative energy transfer from the peripheral pyrenyl units towards the central porphyrin core is operative in the tetrapyrenylporphyrinic system. Interestingly, encapsulation of the pyrenyl units into the ruthenium cages affects the photophysics of the central porphyrin component, since its emission quantum yield is reduced in the supramolecular array.
View Article and Find Full Text PDFBioanalysis
January 2025
Quantitative Pharmacology, Bicycle Therapeutics, Cambridge, MA, USA.
Background: The Bicycle® toxin conjugate (BTC) zelenectide pevedotin, formerly known as BT8009, is a novel bicyclic peptide targeting the Nectin-4 tumor antigen conjugated to the cytotoxin monomethyl auristatin E (MMAE) via a valine-citrulline cleavable linker. Zelenectide pevedotin is currently being investigated in a Phase 1/2 (Duravelo-1, NCT04561362) clinical trial to determine safety and efficacy in patients with tumors associated with Nectin-4 expression. A simple regulated bioanalytical assay was developed to quantify intact zelenectide pevedotin in patient plasma samples.
View Article and Find Full Text PDFCarbon dioxide capture is a vital approach for mitigating air pollution and global warming. In this context, metal-organic frameworks are promising candidates. Particularly, MIL-88A (M), where the metal nodes (M) are connected to fumarate linkers in its structure, has demonstrated significant potential for CO capture.
View Article and Find Full Text PDFMetal-organic frameworks such as MOF-303 and MOF-LA2-1 have demonstrated exceptional performance for water harvesting applications. To enable a reticular design of such materials, an accurate prediction of the adsorption properties with chemical accuracy and fully accounting for the flexibility is crucial. The computational prediction of water adsorption properties in MOFs has become standard practice, but current methods lack the predictive power needed to design new materials.
View Article and Find Full Text PDFAnal Chem
January 2025
Department of Chemistry, University of California, Davis, California 95616, United States.
Protein-protein interactions in the cell membrane are typically mediated by glycans, with terminal sialic acid often involved in these interactions. To probe the nature of the interactions, we developed quantitative cross-linking methods involving the glycans of the glycoproteins and the polypeptide moieties of proteins. We designed and synthesized biotinylated enrichable cross-linkers that were click-tagged to metabolically incorporate azido-sialic acid on cell surface glycans to allow cross-linking of the azido-glycans with lysine residues on proximal polypeptides.
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