Search Results - "Singh, Sumeet K."
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The 20S as a stand-alone proteasome in cells can degrade the ubiquitin tag
Published in Nature communications (26-10-2021)“…The proteasome, the primary protease for ubiquitin-dependent proteolysis in eukaryotes, is usually found as a mixture of 30S, 26S, and 20S complexes. These…”
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2
Affinity Maturation of Macrocyclic Peptide Modulators of Lys48‐Linked Diubiquitin by a Twofold Strategy
Published in Chemistry : a European journal (26-06-2020)“…Messenger RNA display of peptides containing non‐proteinogenic amino acids, referred to as RaPID system, has become one of the leading methods to express…”
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3
Ubiquitin Signaling: Chemistry Comes to the Rescue
Published in Journal of the American Chemical Society (12-04-2017)“…Posttranslational modification of proteins by ubiquitin (Ub), i.e., ubiquitination, mediates a variety of cellular processes, including protein homeostasis,…”
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Peptide and protein chemistry approaches to study the tumor suppressor protein p53
Published in Organic & biomolecular chemistry (20-07-2022)“…The tumor suppressor and master gene regulator protein p53 has been the subject of intense investigation for several decades due to its mutation in about half…”
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5
The semisynthesis of site-specifically modified histones and histone-based probes of chromatin-modifying enzymes
Published in Methods (San Diego, Calif.) (01-07-2023)“…•Histone PTMs play an important role in regulating gene transcription.•Semisynthetic histones with defined PTMs are key to investigating the histone…”
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Diverse fate of ubiquitin chain moieties: The proximal is degraded with the target, and the distal protects the proximal from removal and recycles
Published in Proceedings of the National Academy of Sciences - PNAS (16-04-2019)“…One of the enigmas in the ubiquitin (Ub) field is the requirement for a poly-Ub chain as a proteasomal targeting signal. The canonical chain appears to be…”
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7
Protein ubiquitination via dehydroalanine: development and insights into the diastereoselective 1,4-addition step
Published in Organic & biomolecular chemistry (07-06-2016)“…We report a strategy for site-specific protein ubiquitination using dehydroalanine (Dha) chemistry for the preparation of ubiquitin conjugates bearing a very…”
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8
Total chemical synthesis of sumoylated histone H4 reveals negative biochemical crosstalk with histone ubiquitylation
Published in Chemical communications (Cambridge, England) (30-03-2023)“…An efficient total chemical synthesis of site-specifically sumoylated histone H4 was undertaken to generate homogenously modified mononucleosomes. These were…”
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Betaine alleviates doxorubicin‐induced nephrotoxicity by preventing oxidative insults, inflammation, and fibrosis through the modulation of Nrf2/HO−1/NLRP3 and TGF‐β expression
Published in Journal of biochemical and molecular toxicology (01-01-2024)“…Doxorubicin (Dox) is an anthracycline antibiotic used to treat various cancers and shows severe toxicity in multiple organ systems, including kidneys. Evidence…”
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10
Synthetic Uncleavable Ubiquitinated Proteins Dissect Proteasome Deubiquitination and Degradation, and Highlight Distinctive Fate of Tetraubiquitin
Published in Journal of the American Chemical Society (14-12-2016)“…Various hypotheses have been proposed regarding how chain length, linkage type, position on substrate, and susceptibility to deubiquitinases (DUBs) affect…”
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Total Chemical Synthesis of ISGylated-Ubiquitin Hybrid Chain Assisted by Acetamidomethyl Derivatives with Dual Functions
Published in Bioconjugate chemistry (18-03-2020)“…Interferon-stimulated gene 15 (ISG15) is a member of the ubiquitin-like modifiers (ULM) family, which adopts a β-grasp fold domain(s) similar to ubiquitin (Ub)…”
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12
pH sensitive coiled coils: a strategy for enhanced liposomal drug delivery
Published in Nanoscale (07-03-2016)“…Stimuli responsive controlled release from liposome based vesicles is a promising strategy for the site specific delivery of drugs. Herein, we report the…”
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13
γ-Amino acid mutated α-coiled coils as mild thermal triggers for liposome delivery
Published in Chemical communications (Cambridge, England) (07-12-2013)“…The stability and compatibility of designed coiled coil peptides towards the selective incorporation of γ(4)-amino acids at the hydrophobic positions of the…”
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14
Efficient Access to Enantiopure γ4-Amino Acids with Proteinogenic Side-Chains and Structural Investigation of γ4-Asn and γ4-Ser in Hybrid Peptide Helices
Published in Chemistry : a European journal (25-11-2013)“…Hybrid peptides composed of α‐ and β‐amino acids have recently emerged as new class of peptide foldamers. Comparatively, γ‐ and hybrid γ‐peptides composed of…”
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15
Chronic Traumatic Aneurysm of the Left Main Coronary Artery Causing Myocardial Infarction
Published in The Annals of thoracic surgery (01-12-2005)Get full text
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16
Chemical Synthesis of Ubiquitin Chains
Published in Current protocols in chemical biology (01-11-2015)“…Chemical synthesis of complex biomolecules such as proteins is a challenging adventure, yet rewarding in driving various biochemical and biophysical research…”
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Efficient Access to Enantiopure [gamma]4-Amino Acids with Proteinogenic Side-Chains and Structural Investigation of [gamma]4-Asn and [gamma]4-Ser in Hybrid Peptide Helices
Published in Chemistry : a European journal (25-11-2013)“…Hybrid peptides composed of [alpha]- and [beta]-amino acids have recently emerged as new class of peptide foldamers. Comparatively, [gamma]- and hybrid…”
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Efficient Access to Enantiopure γ 4 ‐Amino Acids with Proteinogenic Side‐Chains and Structural Investigation of γ 4 ‐Asn and γ 4 ‐Ser in Hybrid Peptide Helices
Published in Chemistry : a European journal (25-11-2013)“…Abstract Hybrid peptides composed of α‐ and β‐amino acids have recently emerged as new class of peptide foldamers. Comparatively, γ‐ and hybrid γ‐peptides…”
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Efficient Access to Enantiopure [gamma] super(4)-Amino Acids with Proteinogenic Side-Chains and Structural Investigation of [gamma] super(4)-Asn and [gamma] super(4)-Ser in Hybrid Peptide Helices
Published in Chemistry : a European journal (01-11-2013)“…Hybrid peptides composed of [alpha]- and [beta]-amino acids have recently emerged as new class of peptide foldamers. Comparatively, [gamma]- and hybrid…”
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20
Project Go! Helping veterans attend their mental health appointments
Published in JAAPA (Montvale, N.J.) (01-12-2015)Get full text
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