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显示 1-30 共 43 条结果 关于 "143057" 范围 论文
Lucio Litti et al.
Nanoscale, 10(3), 1272-1278 (2018-01-03)
Multimodal contrast agents offer new interesting diagnostic possibilities, summing the benefits of multiple imaging techniques. Magnetic resonance and optical imaging are complementary techniques. The first allows total body screening, even though it suffers from low spatial resolution and needs high
Andrea Kocsis et al.
Journal of immunology (Baltimore, Md. : 1950), 185(7), 4169-4178 (2010-09-08)
The complement system, an essential part of the innate immune system, can be activated through three distinct routes: the classical, the alternative, and the lectin pathways. The contribution of individual activation pathways to different biological processes can be assessed by
Naoya Shibayama
FEBS letters, 586(1), 74-78 (2011-12-07)
To investigate the conformational changes in human tetrameric (αβ)(2) hemoglobin upon binding of the first two ligands, we have measured the kinetics of reactions between 4,4'-dithiodipyridine and β93Cys sulfhydryl groups of four diliganded hemoglobins by using CO-bound Fe(II)-Ni(II) hybrids with
Garima Kumar et al.
Biochemistry, 55(12), 1863-1872 (2016-03-05)
Within the DRE-TIM metallolyase superfamily, members of the Claisen-like condensation (CC-like) subgroup catalyze C-C bond-forming reactions between various α-ketoacids and acetyl-coenzyme A. These reactions are important in the metabolic pathways of many bacterial pathogens and serve as engineering scaffolds for
Tsuyoshi Asakawa et al.
Journal of oleo science, 57(4), 243-249 (2008-03-12)
Monomeric thiol surfactants, [C(n)H(2n+1)N(CH(3))(2)CH(2)CH(2)SH]Br, were produced by the cleavage of gemini surfactant containing a disulfide bond in the spacer chain, [C(n)H(2n+1)N(CH(3))(2)CH(2)CH(2)SSCH(2)CH(2)N(CH(3))(2)C(n)H(2n+1)]2Br. The disulfide bond was completely reduced by the addition of four times moles of dithiothreitol in water at room
Shwu-Jiuan Sheu et al.
Investigative ophthalmology & visual science, 44(3), 1237-1244 (2003-02-26)
To identify the mechanisms by which oxidative stress with oxidizing agents alters the activity of ion channels in human retinal pigment epithelial (RPE) cells. The effects of oxidizing agents on ion currents were investigated in human RPE R-50 cells with
Nikitas Bistolas et al.
Biochemical and biophysical research communications, 314(3), 810-816 (2004-01-27)
The spectroelectrochemistry of camphor-bound cytochrome P450cam (P450cam) using gold electrodes is described. The electrodes were modified with either 4,4(')-dithiodipyridin or sodium dithionite. Electrolysis of P450cam was carried out when the enzyme was in solution, while at the same time UV-visible
H Reynaldo López-Mirabal et al.
Current genetics, 53(5), 275-286 (2008-03-22)
Resistance to thiol oxidation can arise from mutations altering redox homeostasis. A Saccharomyces cerevisiae sit4-110 mutant is here described, which was isolated as resistant to the thiol-specific oxidant dipyridyl disulfide (DPS) and which contains a single-residue substitution in the SIT4
Aldrichimica Acta, 4, 33-33 (1971)
H Reynaldo López-Mirabal et al.
Antonie van Leeuwenhoek, 92(4), 463-472 (2007-06-15)
Membrane-permeant oxidants have become a standard tool for studying eukaryotic organisms because they affect the redox state and the redox regulation of different compartments. The ero1-1 mutant is temperature sensitive (37 degrees C) and cannot grow under anaerobic conditions. Low
Fusako Takeuchi et al.
Journal of biochemistry, 138(6), 751-762 (2006-01-24)
Cytochrome b(561) from bovine adrenal chromaffin vesicles contains two hemes b with EPR signals at g(z) = 3.69 and 3.14 and participates in transmembrane electron transport from extravesicular ascorbate to an intravesicular monooxygenase, dopamine beta-hydroxylase. Treatment of purified cytochrome b(561)
Sitanan Thitiprasert et al.
Applied biochemistry and biotechnology, 164(8), 1305-1322 (2011-03-19)
Rhizopus oryzae is becoming more important due to its ability to produce an optically pure L: -lactic acid. However, fermentation by Rhizopus usually suffers from low yield because of production of ethanol as a byproduct. Limiting ethanol production in living
Angela Fago et al.
The Journal of biological chemistry, 279(43), 44417-44426 (2004-08-10)
Two new globin proteins have recently been discovered in vertebrates, neuroglobin in neurons and cytoglobin in all tissues, both showing heme hexacoordination by the distal His(E7) in the absence of gaseous ligands. In analogy to hemoglobin and myoglobin, neuroglobin and
Leonid S Brown et al.
Journal of molecular biology, 317(3), 471-478 (2002-04-02)
The conformation of the structured EF interhelical loop of bacteriorhodopsin and its change in the M photointermediate were assessed by measuring the rate of reaction of 16 single engineered cysteine residues along the loop with water-soluble sulfhydryl reagents. The exposure
Jordan D Pritts et al.
Biochemistry, 59(8), 970-982 (2020-02-07)
Cleavage and polyadenylation specificity factor 30 (CPSF30) is a "zinc finger" protein that plays a crucial role in the transition of pre-mRNA to RNA. CPSF30 contains five conserved CCCH domains and a CCHC "zinc knuckle" domain. CPSF30 activity is critical
Straightforward preparation and assay of aspartyl protease substrates with an internal thioester linkage.
Yazmín T Rosa-Bauzá et al.
Chembiochem : a European journal of chemical biology, 8(9), 981-984 (2007-05-12)
Chao Wu et al.
International journal of biological macromolecules, 155, 1288-1295 (2019-11-17)
Solution stability of food proteins is a crucial factor determining their shelf-life and sensory properties; yet to obtain stable protein products such as beverages is generally challenged by the growing demand for non-additive foods. Here, we report a facile method
Muriel Arimon et al.
Neurobiology of disease, 84, 109-119 (2015-06-24)
Oxidative stress is a common feature of the aging process and of many neurodegenerative disorders, including Alzheimer's disease. Understanding the direct causative relationship between oxidative stress and amyloid pathology, and determining the underlying molecular mechanisms is crucial for the development
Chitra Mohan et al.
eLife, 7 (2018-08-10)
VivosX is an in vivo disulfide crosslinking approach that utilizes a pair of strategically positioned cysteines on two proteins to probe physical interactions within cells. Histone H2A.Z, which often replaces one or both copies of H2A in nucleosomes downstream of
General method for facile intramolecular disulfide formation in synthetic peptides.
Daniel J Cline et al.
Analytical biochemistry, 335(1), 168-170 (2004-11-03)
Tomoko Nishino et al.
The Journal of biological chemistry, 280(26), 24888-24894 (2005-05-10)
Mammalian xanthine dehydrogenase can be converted to xanthine oxidase by modification of cysteine residues or by proteolysis of the enzyme polypeptide chain. Here we present evidence that the Cys(535) and Cys(992) residues of rat liver enzyme are indeed involved in
Yan Huang et al.
Proceedings of the National Academy of Sciences of the United States of America, 117(7), 3543-3550 (2020-02-01)
The SWR complex edits the histone composition of nucleosomes at promoters to facilitate transcription by replacing the two nucleosomal H2A-H2B (A-B) dimers with H2A.Z-H2B (Z-B) dimers. Swc5, a subunit of SWR, binds to A-B dimers, but its role in the
Liang Chen et al.
Journal of agricultural and food chemistry, 66(41), 10808-10815 (2018-10-06)
On the basis of the chemistry of wine and the co-occurrence of 3-sulfanylhexan-1-ol (3-SH) and acetaldehyde, we investigated the existence of 2-methyl-4-propyl-1,3-oxathiane (1) and identified the presence of a single detectable geometric isomer, cis-1, in wines for the first time.
Iveta Imriskova-Sosova et al.
Biochemistry, 44(51), 16949-16956 (2005-12-21)
Members of the Sco protein family are implicated in the assembly of the respiratory complex cytochrome c oxidase. Several possible roles have been proposed for Sco: a copper delivery agent, a site-specific thiol reductase, and an indicator of cellular redox
Soong-Yu Kuo et al.
Archives of toxicology, 77(11), 630-637 (2003-08-21)
The effect of oxidants on Ca(2+) movement in osteoblasts is unclear. In this study, we show that 4,4'-dithiodipyridine (4,4'-DTDP), a reactive disulphide that mobilizes Ca(2+) in muscle, induces an increase in cytoplasmic free-Ca(2+) concentrations ([Ca(2+)](i)) in MG63 human osteosarcoma cells
H Reynaldo López-Mirabal et al.
Molecular genetics and genomics : MGG, 279(6), 629-642 (2008-03-22)
Thiol oxidants are expected to have multiple effects in living cells. Hence, mutations giving resistance to such agents are likely to reveal important targets and/or mechanisms influencing the cellular capacity to withstand thiol oxidation. A screen for mutants resistant to
H Reynaldo López-Mirabal et al.
FEMS yeast research, 7(3), 391-403 (2007-01-27)
Dipyridyl disulfide (DPS) is a highly reactive thiol oxidant that functions as electron acceptor in thiol-disulfide exchange reactions. DPS is very toxic to yeasts, impairing growth at low micromolar concentrations. The genes TRX2 (thioredoxin), SOD1 (superoxide dismutase), GSH1 (gamma-glutamyl-cysteine synthetase)
Nina Jajcanin-Jozić et al.
Biochimie, 92(1), 89-96 (2009-10-15)
Dipeptidyl peptidases III (DPPs III) form a distinct metallopeptidase family characterized by the unique HEXXGH motif. High susceptibility to inactivation by organomercurials suggests the presence of a reactive cysteine residue(s) in, or close to, their active site. Yeast DPP III
Cynthia A Danquah et al.
Scientific reports, 8(1), 1150-1150 (2018-01-20)
Disulfides from Allium stipitatum, commonly known as Persian shallot, were previously reported to possess antibacterial properties. Analogues of these compounds, produced by S-methylthiolation of appropriate thiols using S-methyl methanethiosulfonate, exhibited antimicrobial activity, with one compound inhibiting the growth of Mycobacterium
Takeshi Shimizu et al.
ChemSusChem, 13(9), 2256-2263 (2020-01-30)
Three porous disulfide-ligand-containing metal-organic frameworks (DS-MOFs) and two nonporous coordination polymers with disulfide ligands (DS-CPs) with various structural dimensionalities were used as cathode active materials in lithium batteries. Charge/discharge performance examinations revealed that only porous DS-MOF-based batteries exhibited significant capacities
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