To cleave or not—disulfide bond of cystine on nanocopper: a computational approach
Source abstract
Abstract
The stability of disulfide bond in cystine on nanocopper (Cu9) was probed at B3LYP/LANL2DZ/6–311 + + G(d,p) level of theory by taking unconnected cystine and Cu9 as inputs for optimizing the geometries. It was observed that cystine got chemisorbed on Cu9 interacting majorly through its disulfide and carboxyl functional groups. The simulated Raman spectrum revealed the cleavage of disulfide linkage by the disappearance of the –S–S– stretching mode, in good agreement with the earlier reported experimental study. NBO (natural bond orbital) analysis revealed the donation of lone pairs of electrons from oxygen and sulfur to copper in the Cu9-cystine system. Additionally, the predictions from MK (Merz Kollman), ESP (electrostatic potential) charge, FMO (Frontier molecular orbital), and AIM (atoms in molecule) calculations corroborated the above-mentioned results.
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Research context
OpenAlex topics: Protein Interaction Studies and Fluorescence Analysis · Nanocluster Synthesis and Applications · Molecular Sensors and Ion Detection
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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