Processing of Composite Electrodes of Carbon Nanotube Fabrics and Inorganic Matrices via Rapid Joule Heating

Autor(es)

da Silva, Fernando Bruno ; de Oliveira, Vinicius Martins ; de Oliveira Junior, Antonio Bento ; Contessoto, Vinicius de Godoi ; Leite, Vitor B. P.

• Tipo de documento: Artigo Científico
• Fonte: Journal of Physical Chemistry B; v. N/A, p. 10-pg., 2023-02-01.

Resumo

Understanding the details of a protein folding mechanism can be a challenging and complex task. One system with an interesting folding behavior is the alpha-spectrin domain, where the R15 folds three-orders of magnitude faster than its homologues R16 and R17, despite having similar structures. The molecular origins that explain these folding rate differences remain unclear, but our previous work revealed that a combined effect produced by non-native interactions could be a reasonable cause for these differences. In this study, we explore further the folding process by identifying the molecular paths, metastable states, and the collective motions that lead these unfolded proteins to their native state conformation. Our results uncovered the differences between the folding pathways for the wild-type R15 and R16 and an R16 mutant. The metastable ensembles that speed down the folding were identified using an energy landscape visualization method (ELViM). These ensembles correspond to similar experimentally reported configurations. Our observations indicate that the non-native interactions are also associated with secondary structure misdocking. This computational methodology can be used as a fast, straightforward protocol for shedding light on systems with unclear folding or conformational traps. (AU)

• Processo FAPESP: 18/11614-3 - Efeito de Mutações Câncer-Ativadoras e de pH na Transição Funcional do Receptor de Estrógeno
• Beneficiário: Vinicius Martins de Oliveira
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 16/13998-8 - Evolução racional por métodos computacionais aplicados na predição de mutações no desenvolvimento de enzimas para produção de biocombustíveis
• Beneficiário: Vinícius de Godoi Contessoto
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 17/09662-7 - Evolução racional por métodos computacionais aplicada em enzimas relacionadas com a produção de bioetanol
• Beneficiário: Vinícius de Godoi Contessoto
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado
• Processo FAPESP: 19/22540-3 - Estudos de relevo de superfícies de energia de macromoléculas biológicas
• Beneficiário: Vitor Barbanti Pereira Leite
• Modalidade de apoio: Auxílio à Pesquisa - Regular