Buscar
Mostrando ítems 1-10 de 447
Are disulfide bonds resilient to double ionization? Insights from coincidence spectroscopy and ab initio calculations
(2020)
Disulfide bonds (–S–S–) are commonly present in biomolecules and have also been detected in astrophysical environments. In this work, the stability of the disulfide bond towards double ionization is investigated using ...
A dimerization interface mediated by functionally critical residues creates interfacial disulfide bonds and copper sites in CueP
(Elsevier, 2014-08)
CueP confers bacterial copper resistance in the periplasm, particularly under anaerobic conditions, through an unknown mechanism. The only available structure and limited solution data suggest that CueP forms noncovalent ...
Breaking the disulfide chemical bond using high energy photons: the dimethyl disulfide and methyl propyl disulfide molecules
(2017-07-15)
In order to study the stability of the disulfide chemical bond in molecules subjected to a flux of high energy photons, the ionic fragmentation of two molecules containing a disulfide chemical bond, dimethyl disulfide ...
Conferring specificity in redox pathways by enzymatic thiol/disulfide exchange reactions
(Taylor & Francis Ltd, 2016-02-01)
Thiol-disulfide exchange reactions are highly reversible, displaying nucleophilic substitutions mechanism (S(N)2 type). For aliphatic, low molecular thiols, these reactions are slow, but can attain million times faster ...
Mechanochemical disulfide reduction reveals imprints of noncovalent sulfur⋯oxygen chalcogen bonds in protein-inspired mimics in aqueous solution
(Royal Society of Chemistry, 2020-11)
The surprisingly rich chemistry of mechanically activated cleavage of disulfide bonds has been uncovered only recently. Using a disulfide protein mimic together with Cleland's reagent (DTT) as the attacking nucleophile in ...
Nicotinamidase/pyrazinamidase of Mycobacterium tuberculosis forms homo-dimers stabilized by disulfide bonds
(Elsevier, 2014)
Recombinant wild-pyrazinamidase from H37Rv Mycobacterium tuberculosis was analyzed by gel electrophoresis under differential reducing conditions to evaluate its quaternary structure. PZAse was fractionated by size exclusion ...
Rewiring Chemical Networks Based on Dynamic Dithioacetal and Disulfide Bonds
(Wiley VCH Verlag, 2018-03-23)
The control of the connectivity between nodes of synthetic networks is still largely unexplored. To address this point we take advantage of a simple dynamic chemical system with two exchange levels that are mutually connected ...
Heparin enhances protamine disulfide bond reduction during in vitro decondensation of human spermatozoa
(Oxford University Press, 2012-05-02)
BACKGROUND: Human sperm nuclear decondensation in vivo involves protamine disulfide bond reduction by glutathione (GSH) and protamine/histone exchange, presumably with heparan sulfate (HS) as the protamine acceptor. The ...
Human FEZ1 Protein Forms a Disulfide Bond Mediated Dimer: Implications for Cargo Transport
(Amer Chemical SocWashingtonEUA, 2010)
Adlayers of Alkanedithiols on Au(111): effect of disulfide reducing agent
(American Chemical Society, 2013-01)
High-resolution photoemission spectroscopy is used to characterize adlayers of ethane-, hexane-, and nonanedithiol molecules grown on Au(111) surfaces by the immersion method. The effect of using a reducing agent during ...