Results 251 to 260 of about 40,867 (306)
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Cleavage of disulfide polymers. III. By disulfides
Journal of Applied Polymer Science, 1964AbstractA study was made of the cleavage of polymeric disulfide by organic disulfides of different structures in the presence and absence of sodium disulfide. While aliphatic disulfides will cleave polymeric disulfides only in the presence of sodium disulfide, hydroxyethyl disulfide and aromatic disulfides will cause partial cleavage in the absence of ...
E. M. Fettes, H. Mark
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Disulfide luminescence. Emission characteristics of cyclic tetrapeptide disulfides
Biochemical and Biophysical Research Communications, 1981Luminescence has been detected in cyclic tetrapeptide disulfides containing only nonaromatic residues. Excitation of the S-S- n-cr transition between 280 and 290 nm leads to.ernission in the region 300-340 nm. The position and intensity of the emission band depends on the stereochemistry of the peptide and polarity of the solvent. Quantum yields
Mathew, MK, Ravi, A, Balaram, P
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Disulfide Bond in Diethyl Disulfide: A Rotational Spectroscopic Study
The Journal of Physical Chemistry A, 2018Diethyl disulfide was investigated by pulsed jet Fourier transform microwave spectroscopy. The spectroscopic study was complemented by ab initio calculations. The first two most stable conformers predicted at the MP2/6-311++G(d,p) level of theory were observed in the supersonic expansion. Two 13C and one 34S isotopologues for the most stable conformer (
Jiaqi Zhang +3 more
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Thermal properties of some cyclic disulfides: naphthalene disulfide and diphenylene disulfide
Thermochimica Acta, 1975Abstract The specific heat, the melting heat and entropy, the vaporization heat of naphtalene disulfide (C10H6S2) and of diphenylene disulfide (C12H8S2) have been determined by differential scanning calorimetry (DSC). Over the temperature range examined the specific heat may be represented as follows: where T is the temperature in degrees Kelvin,
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Reaction of hemerythrin with disulfides
Biochemistry, 1985The reactions of hemerythrin from Phascolopsis gouldii with the specific sulfhydryl reagents 5,5'-dithiobis(2-nitrobenzoate), 2,2'-dithiodipyridine, and 4,4'-dithiodipyridine were studied at 25 degrees C. Spectrophotometric measurements showed that 1 mol of disulfide reacted per protein subunit consistent with a single cysteine at residue 50.
P C, Harrington, R G, Wilkins
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Biochemistry, 2006
Disulfide bonds have been generally considered to be either structural or catalytic. Structural bonds stabilize a protein, while catalytic bonds mediate thiol-disulfide interchange reactions in substrate proteins. There is emerging evidence for a third type of disulfide bond that can control protein function by triggering a conformational change when ...
Bryan, Schmidt +2 more
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Disulfide bonds have been generally considered to be either structural or catalytic. Structural bonds stabilize a protein, while catalytic bonds mediate thiol-disulfide interchange reactions in substrate proteins. There is emerging evidence for a third type of disulfide bond that can control protein function by triggering a conformational change when ...
Bryan, Schmidt +2 more
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Acta Crystallographica Section C Crystal Structure Communications, 1988
S-Benzylthio thioacetate, C9H10OS2, Mr = 198.31, monoclinic, P2(1), a = 5.7112(5), b = 8.1912(5), c = 10.6486(8) A, beta = 92.230(8) degrees, V = 497.8(1) A3, Z = 2, Dm = 1.32(1), Dx = 1.323 Mg m-3, lambda(Mo K alpha) = 0.71073 A, mu = 0.47 mm-1, F(000) = 208, T = 299(1) K, RF = 0.024 for 812 reflections. In this molecule, the S-S [2.024(1) A] and S-C [
E, John, J A, Potenza, H J, Schugar
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S-Benzylthio thioacetate, C9H10OS2, Mr = 198.31, monoclinic, P2(1), a = 5.7112(5), b = 8.1912(5), c = 10.6486(8) A, beta = 92.230(8) degrees, V = 497.8(1) A3, Z = 2, Dm = 1.32(1), Dx = 1.323 Mg m-3, lambda(Mo K alpha) = 0.71073 A, mu = 0.47 mm-1, F(000) = 208, T = 299(1) K, RF = 0.024 for 812 reflections. In this molecule, the S-S [2.024(1) A] and S-C [
E, John, J A, Potenza, H J, Schugar
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Formation of disulfides with diamide
1987Publisher Summary This chapter discusses the formation of disulfides with diamide. Several diazenecarbonyl derivatives were found to be active for the conversion of thiols to disulfides. The most convenient and chemically simple agent was diazenedicarboxylic acid bis(N,N-di-methylamide), now known by the trivial name, “diamide.” Diamide is a yellow ...
N S, Kosower, E M, Kosower
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Journal of the American Chemical Society, 1984
Etude des structures electroniques a l'etat fondamental et a l'etat excite par des calculs ab initio SCF et CI, en fonction de l'angle diedre S-S: energies, barrieres cis et trans a la rotation rigide empechee; potentiels d'ionisation, forces de rotation et forces d ...
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Etude des structures electroniques a l'etat fondamental et a l'etat excite par des calculs ab initio SCF et CI, en fonction de l'angle diedre S-S: energies, barrieres cis et trans a la rotation rigide empechee; potentiels d'ionisation, forces de rotation et forces d ...
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Chemischer Informationsdienst, 1979
AbstractDie Titelverbindungen werden aus den Oxidsulfiden Ln2O2S und S durch chemischen Transport im Temp.‐Gradienten 780 → 730°C mit KI als Transportmittel dargestellt und röntgenographisch untersucht.
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AbstractDie Titelverbindungen werden aus den Oxidsulfiden Ln2O2S und S durch chemischen Transport im Temp.‐Gradienten 780 → 730°C mit KI als Transportmittel dargestellt und röntgenographisch untersucht.
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