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Showing 31-60 of 105 results for "678937" within Papers
M Sloan Siegrist et al.
ACS chemical biology, 8(3), 500-505 (2012-12-18)
Peptidoglycan (PG) is an essential component of the bacterial cell wall. Although experiments with organisms in vitro have yielded a wealth of information on PG synthesis and maturation, it is unclear how these studies translate to bacteria replicating within host
Bruce G Mockett et al.
The Journal of neuroscience : the official journal of the Society for Neuroscience, 39(17), 3188-3203 (2019-02-26)
Secreted amyloid precursor protein-alpha (sAPPα) has growth factor-like properties and can modulate long-term potentiation (LTP) and memory. Here, we demonstrate that exposure to sAPPα converts short-lasting LTP into protein-synthesis-dependent late LTP in hippocampal slices from male rats. sAPPβ had no
Ryuichiro Nakai et al.
Bioorganic & medicinal chemistry, 17(3), 1101-1108 (2008-03-28)
High-throughput screening (HTS) has become an integral part of academic and industrial efforts aimed at developing new chemical probes and drugs. These screens typically generate several 'hits', or lead active compounds, that must be prioritized for follow-up medicinal chemistry studies.
Jinlong Fan et al.
Journal of materials chemistry. B, 8(33), 7501-7510 (2020-07-17)
Electrically addressable covalent immobilization of probes on a multiplexed electrode for the simultaneous detection of multiple targets within the same sample is often regarded as a difficult milestone to be achieved. Herein, we demonstrated a reagentless disposable multiplexed electrochemical DNA
Geoffrey A Heinzl et al.
Pharmaceutical research, 36(7), 103-103 (2019-05-19)
A rapid and broadly applicable method to assess relevant oxidative damage in biopharmaceuticals is important for lifecycle management of product quality. Multiple methods are currently employed as stress tests to induce oxidative damage for assessment of stability, safety, and efficacy.
Zhanwu Hou et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 1165, 122527-122527 (2021-01-25)
Nascent proteome presents dynamic changes in response to a certain stimulus. Thus, monitoring nascent proteome is critical to uncovering the involved biological mechanism. But the low-abundance of nascent proteome against an overwhelming pre-existing proteome limits its identification and quantification. Herein
Raffaello Verardi et al.
Structure (London, England : 1993), 25(9), 1337-1347 (2017-08-02)
DHHC enzymes catalyze palmitoylation, a major post-translational modification that regulates a number of key cellular processes. There are up to 24 DHHCs in mammals and hundreds of substrate proteins that get palmitoylated. However, how DHHC enzymes engage with their substrates
Hong Jiang et al.
Current protocols in chemical biology, 4(1), 19-34 (2012-11-29)
Poly(ADP-ribose) polymerases (PARPs) play important roles in various biological processes, including DNA repair, transcriptional regulation, mitosis, and RNA processing. PARP inhibitors are in clinical trials for treating human cancers. Understanding the biological function of PARPs will be important to fully
Sandeep Ravindran et al.
PloS one, 4(12), e8143-e8143 (2009-12-04)
Toxoplasma gondii is a eukaryotic parasite of the phylum Apicomplexa that is able to infect a wide variety of host cells. During its active invasion process it secretes proteins from discrete secretory organelles: the micronemes, rhoptries and dense granules. Although
Emi Takamitsu et al.
Analytical biochemistry, 464, 83-93 (2014-07-22)
To establish a non-radioactive, cell-free detection system for protein N-myristoylation, metabolic labeling in a cell-free protein synthesis system using bioorthogonal myristic acid analogues was performed. After Cu(I)-catalyzed azide-alkyne cycloaddition (CuAAC) with a biotin tag, the tagged proteins were separated by
Mingming Zhang et al.
Nature, 586(7829), 434-439 (2020-10-09)
Cysteine palmitoylation (S-palmitoylation) is a reversible post-translational modification that is installed by the DHHC family of palmitoyltransferases and is reversed by several acyl protein thioesterases1,2. Although thousands of human proteins are known to undergo S-palmitoylation, how this modification is regulated
Daniel W Bak et al.
Cell chemical biology, 25(9), 1157-1167 (2018-07-10)
Mammalian selenocysteine (Sec)-containing proteins, selenoproteins, are important to (patho)physiological processes, including redox homeostasis. Sec residues have been recalcitrant to mass spectrometry-based chemoproteomic methods that enrich for reactive cysteine (Cys) residues with electrophilic chemical probes, despite confirmed reactivity of Sec with
Discovery of a Functional Covalent Ligand Targeting an Intrinsically Disordered Cysteine within MYC.
Lydia Boike et al.
Cell chemical biology, 28(1), 4-13 (2020-09-24)
MYC is a major oncogenic transcriptional driver of most human cancers that has remained intractable to direct targeting because much of MYC is intrinsically disordered. Here, we have performed a cysteine-reactive covalent ligand screen to identify compounds that could disrupt
Lisa Roxanne Knoke et al.
Frontiers in microbiology, 11, 1228-1228 (2020-06-26)
Outer membrane vesicles (OMVs), released from Gram-negative bacteria, have been attributed to intra- and interspecies communication and pathogenicity in diverse bacteria. OMVs carry various components including genetic material, toxins, signaling molecules, or proteins. Although the molecular mechanism(s) of cargo delivery
Frank Iversen et al.
Theranostics, 3(3), 201-209 (2013-03-09)
Some of the main concerns with in vivo application of naked small interfering RNA are rapid degradation and urinary excretion resulting in a short plasma half-life. In this study we investigated how conjugation of polyethylene glycol (PEG) with variable chain
Caiping Tian et al.
Cell chemical biology, 24(11), 1416-1427 (2017-10-11)
Electrophilic groups, such as Michael acceptors, expoxides, are common motifs in natural products (NPs). Electrophilic NPs can act through covalent modification of cysteinyl thiols on functional proteins, and exhibit potent cytotoxicity and anti-inflammatory/cancer activities. Here we describe a new chemoproteomic
Yaqian Huang et al.
Redox biology, 41, 101898-101898 (2021-03-02)
Sulfur dioxide (SO2) has emerged as a physiological relevant signaling molecule that plays a prominent role in regulating vascular functions. However, molecular mechanisms whereby SO2 influences its upper-stream targets have been elusive. Here we show that SO2 may mediate conversion
Or David Shahar et al.
eLife, 9 (2020-02-25)
Despite advances in methods to detect protein synthesis, it has not been possible to measure endogenous protein synthesis levels in vivo in an entire vertebrate brain. We developed a transgenic zebrafish line that allows for cell-type-specific labeling and imaging of
Ling Fu et al.
Molecular & cellular proteomics : MCP, 16(10), 1815-1828 (2017-08-23)
Protein cysteinyl residues are the mediators of hydrogen peroxide (H2O2)-dependent redox signaling. However, site-specific mapping of the selectivity and dynamics of these redox reactions in cells poses a major analytical challenge. Here we describe a chemoproteomic platform to systematically and
Justin T Marinko et al.
Proceedings of the National Academy of Sciences of the United States of America, 117(25), 14168-14177 (2020-06-10)
The ordered environment of cholesterol-rich membrane nanodomains is thought to exclude many transmembrane (TM) proteins. Nevertheless, some multispan helical transmembrane proteins have been proposed to partition into these environments. Here, giant plasma membrane vesicles (GPMVs) were employed to quantitatively show
Jixiao Niu et al.
Nature, 573(7772), 139-143 (2019-08-30)
Signal transducer and activator of transcription 3 (STAT3) has a critical role in regulating cell fate, inflammation and immunity1,2. Cytokines and growth factors activate STAT3 through kinase-mediated tyrosine phosphorylation and dimerization3,4. It remains unknown whether other factors promote STAT3 activation through
Carolina Locatelli et al.
Journal of cell science, 133(21) (2020-10-11)
Sprouty-2 is an important regulator of growth factor signalling and a tumour suppressor protein. The defining feature of this protein is a cysteine-rich domain (CRD) that contains twenty-six cysteine residues and is modified by S-acylation. In this study, we show
Jigang Wang et al.
Autophagy, 12(10), 1931-1944 (2016-07-28)
Autophagy is an intracellular degradation mechanism in response to nutrient starvation. Via autophagy, some nonessential cellular constituents are degraded in a lysosome-dependent manner to generate biomolecules that can be utilized for maintaining the metabolic homeostasis. Although it is known that
Jigang Wang et al.
Nature communications, 6, 10111-10111 (2015-12-24)
The mechanism of action of artemisinin and its derivatives, the most potent of the anti-malarial drugs, is not completely understood. Here we present an unbiased chemical proteomics analysis to directly explore this mechanism in Plasmodium falciparum. We use an alkyne-tagged
Beatriz Alvarez-Castelao et al.
eLife, 9 (2020-04-25)
We examined the feedback between the major protein degradation pathway, the ubiquitin-proteasome system (UPS), and protein synthesis in rat and mouse neurons. When protein degradation was inhibited, we observed a coordinate dramatic reduction in nascent protein synthesis in neuronal cell
Charles A Berdan et al.
Cell chemical biology, 26(7), 1027-1035 (2019-05-14)
Parthenolide, a natural product from the feverfew plant and member of the large family of sesquiterpene lactones, exerts multiple biological and therapeutic activities including anti-inflammatory and anti-cancer effects. Here, we further study the parthenolide mechanism of action using activity-based protein
Malgorzata Broncel et al.
Molecular & cellular proteomics : MCP, 15(2), 715-725 (2015-11-26)
AMPylation of mammalian small GTPases by bacterial virulence factors can be a key step in bacterial infection of host cells, and constitutes a potential drug target. This posttranslational modification also exists in eukaryotes, and AMP transferase activity was recently assigned
Ling Fu et al.
Current protocols in protein science, 95(1), e76-e76 (2018-10-13)
Oxidation of a protein cysteinyl thiol (Cys-SH) to S-sulfenic acid (Cys-SOH) by a reactive oxygen species (e.g., hydrogen peroxide), which is termed protein S-sulfenylation, is a reversible post-translational modification that plays a crucial role in redox regulation of protein function
Hui Jing et al.
eLife, 6 (2017-12-15)
Ras proteins play vital roles in numerous biological processes and Ras mutations are found in many human tumors. Understanding how Ras proteins are regulated is important for elucidating cell signaling pathways and identifying new targets for treating human diseases. Here
Mónica P Gutiérrez et al.
Genome research, 29(7), 1123-1133 (2019-06-21)
Proper regulation and maintenance of the epigenome is necessary to preserve genome function. However, in every cell division, the epigenetic state is disassembled and then reassembled in the wake of the DNA replication fork. Chromatin restoration on nascent DNA is
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