Search Results - "Metanis, Norman"
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The Thioredoxin System: A Promising Target for Cancer Drug Development
Published in Chemistry : a European journal (12-08-2020)“…The thioredoxin system is highly conserved system found in all living cells and comprises NADPH, thioredoxin, and thioredoxin reductase. This system plays a…”
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Selenium and Selenocysteine in Protein Chemistry
Published in Angewandte Chemie International Edition (11-12-2017)“…Selenocysteine, the selenium‐containing analogue of cysteine, is the twenty‐first proteinogenic amino acid. Since its discovery almost fifty years ago, it has…”
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Copper‐Mediated Selenazolidine Deprotection Enables One‐Pot Chemical Synthesis of Challenging Proteins
Published in Angewandte Chemie International Edition (07-10-2019)“…While chemical protein synthesis has granted access to challenging proteins, the synthesis of longer proteins is often limited by low abundance or…”
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Utilizing Copper-Mediated Deprotection of Selenazolidine for Cyclic Peptide Synthesis
Published in Journal of organic chemistry (07-02-2020)“…Selenazoliline (Sez) was originally developed as a masked form of selenocysteine (Sec) for the chemical synthesis of challenging proteins. Here, we utilize Sez…”
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Chemoselective Copper-Mediated Modification of Selenocysteines in Peptides and Proteins
Published in Journal of the American Chemical Society (18-08-2021)“…Highly valuable bioconjugated molecules must be synthesized through efficient, chemoselective chemical modifications of peptides and proteins. Herein, we…”
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6
Strategic Use of Non-Native Diselenide Bridges to Steer Oxidative Protein Folding
Published in Angewandte Chemie International Edition (04-06-2012)“…Targeted insertion of a non‐native diselenide cross‐link into a cysteine‐rich protein can be exploited to direct the early stages of oxidative folding so as to…”
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One‐Pot Chemical Protein Synthesis Utilizing Fmoc‐Masked Selenazolidine to Address the Redox Functionality of Human Selenoprotein F
Published in Chemistry : a European journal (16-03-2022)“…Human SELENOF is an endoplasmic reticulum (ER) selenoprotein that contains the redox active motif CXU (C is cysteine and U is selenocysteine), resembling the…”
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Harnessing selenocysteine reactivity for oxidative protein folding
Published in Chemical science (Cambridge) (01-01-2015)“…Although oxidative folding of disulfide-rich proteins is often sluggish, this process can be significantly enhanced by targeted replacement of cysteines with…”
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Primordial emergence of a nucleic acid-binding protein via phase separation and statistical ornithine-to-arginine conversion
Published in Proceedings of the National Academy of Sciences - PNAS (07-07-2020)“…De novo emergence demands a transition from disordered polypeptides into structured proteins with well-defined functions. However, can polypeptides confer…”
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The Cys Sense: Thiol Redox Switches Mediate Life Cycles of Cellular Proteins
Published in Biomolecules (Basel, Switzerland) (22-03-2021)“…Protein homeostasis is an essential component of proper cellular function; however, sustaining protein health is a challenging task, especially during the…”
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Selenolysine: A New Tool for Traceless Isopeptide Bond Formation
Published in Chemistry : a European journal (16-04-2020)“…Despite their biological importance, post‐translationally modified proteins are notoriously difficult to produce in a homogeneous fashion by using conventional…”
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Diselenide crosslinks for enhanced and simplified oxidative protein folding
Published in Communications chemistry (05-03-2021)“…The in vitro oxidative folding of proteins has been studied for over sixty years, providing critical insight into protein folding mechanisms. Hirudin, the most…”
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13
Copper‐Mediated Selenazolidine Deprotection Enables One‐Pot Chemical Synthesis of Challenging Proteins
Published in Angewandte Chemie (07-10-2019)“…While chemical protein synthesis has granted access to challenging proteins, the synthesis of longer proteins is often limited by low abundance or…”
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14
Peptide and Protein Cysteine Modification Enabled by Hydrosulfuration of Ynamide
Published in ACS central science (25-09-2024)“…Efficient functionalization of peptides and proteins has widespread applications in chemical biology and drug discovery. However, the chemoselective and…”
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Optimization of Statin-Loaded Delivery Nanoparticles for Treating Chronic Liver Diseases by Targeting Liver Sinusoidal Endothelial Cells
Published in Pharmaceutics (01-10-2023)“…In this study, we developed functionalized polymeric micelles (FPMs) loaded with simvastatin (FPM-Sim) as a drug delivery system to target liver sinusoidal…”
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Organic solvent enhances oxidative folding of disulfide-rich proteins
Published in Nature chemistry (01-05-2024)“…Natural protein folding takes place in aqueous cell environments. Now, it has been found that proteins in a water-free environment undergo faster and more…”
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Selenoglutathione-Mediated Rescue of Kinetically Trapped Intermediates in Oxidative Protein Folding
Published in Israel journal of chemistry (01-11-2011)“…Selenoglutathione has been shown to have considerable potential as a catalyst of oxidative protein folding. Here we examine how this reagent modulates the…”
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Enhancing the gastrointestinal stability of salmon calcitonin through peptide stapling
Published in Chemical communications (Cambridge, England) (30-05-2023)“…Salmon calcitonin (sCT) is a polypeptide hormone available in the clinic. sCT is degraded in the gastrointestinal tract in minutes. In this work, a stapled…”
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Natural and synthetic selenoproteins
Published in Current opinion in chemical biology (01-10-2014)“…•Selenocysteine endows proteins with novel redox properties.•New recombinant and chemical methods are facilitating selenoprotein production.•Many natural…”
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Frontispiece: The Thioredoxin System: A Promising Target for Cancer Drug Development
Published in Chemistry : a European journal (12-08-2020)“…The thioredoxin system, composed of thioredoxin (TRX), thioredoxin reductase (TR), and NADPH, plays critical roles in many cellular functions. However, it is…”
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