7 documents found, page 1 of 1
The importance of lipid conjugation on anti-fusion peptides against Nipah virus
Marques, Marta C.; Lousa, Diana; Silva, Patrícia M.; Faustino, André F.; Soares, Cláudio M.; Santos, Nuno C.Nipah virus (NiV) is a recently emerging zoonotic virus that belongs to the Paramyxoviridae family and the Henipavirus genus. It causes a range of conditions, from asymptomatic infection to acute respiratory illness and fatal encephalitis. The high mortality rate of 40 to 90% ranks these viruses among the deadliest viruses known to infect humans. Currently, there is no antiviral drug available for Nipah virus d...
West Nile virus capsid protein interacts with biologically relevant host lipid ...
Martins, Ana S.; Carvalho, Filomena Almeida; Faustino, André F.; Martins, Ivo C.; Santos, Nuno C.West Nile and dengue viruses are closely related flaviviruses, originating mosquito-borne viral infections for which there are no effective and specific treatments. Their capsid proteins sequence and structure are particularly similar, forming highly superimposable α-helical homodimers. Measuring protein-ligand interactions at the single-molecule level yields detailed information of biological and biomedical re...
Fast NMR method to probe solvent accessibility and disordered regions in proteins
Faustino, André F.; Barbosa, Glauce M.; Silva, Micael; Castanho, Miguel; Da Poian, Andrea T .; Cabrita, Eurico J.; Santos, Nuno C.; Almeida, Fabio C. L.Understanding protein structure and dynamics, which govern key cellular processes, is crucial for basic and applied research. Intrinsically disordered protein (IDP) regions display multifunctionality via alternative transient conformations, being key players in disease mechanisms. IDP regions are abundant, namely in small viruses, allowing a large number of functions out of a small proteome. The relation betwee...
Structural and functional properties of the capsid protein of Dengue and relate...
Faustino, André F.; Silva Martins, Ana; Karguth, Nina; Artilheiro, Vanessa; Enguita, Francisco J.; Ricardo, Joana; Santos, Nuno C.; Martins, Ivo C.Dengue, West Nile and Zika, closely related viruses of the Flaviviridae family, are an increasing global threat, due to the expansion of their mosquito vectors. They present a very similar viral particle with an outer lipid bilayer containing two viral proteins and, within it, the nucleocapsid core. This core is composed by the viral RNA complexed with multiple copies of the capsid protein, a crucial structural...
Understanding dengue virus capsid protein interaction with key biological targets
Faustino, André F.; Martins, Ivo C.; Carvalho, Filomena A.; Castanho, Miguel A. R. B.; Maurer-Stroh, Sebastian; Santos, Nuno C.Dengue virus (DENV) causes over 500,000 hospitalizations and 20,000 deaths worldwide every year. Dengue epidemics now reach temperate regions due to globalization of trade and travel and climate changes. Currently, there are no successful therapeutic or preventive approaches. We previously developed a peptide drug lead, pep14-23, that inhibits the biologically relevant interaction of DENV capsid (C) protein wit...
Dengue virus capsid protein interacts specifically with very low-density lipopr...
Faustino, André F.; Carvalho, Filomena A.; Martins, Ivo C.; Castanho, Miguel A. R. B.; Mohana-Borges, Ronaldo; Almeida, Fábio C. L.; Da Poian, Andrea T.Dengue affects millions of people worldwide. No specific treatment is currently available, in part due to an incomplete understanding of the viral components' interactions with host cellular structures. We tested dengue virus (DENV) capsid protein (C) interaction with low- and very low-density lipoproteins (LDL and VLDL, respectively) using atomic force microscopy-based force spectroscopy, dynamic light scatter...
Dengue virus capsid protein binding to hepatic lipid droplets (LD) is potassium...
Carvalho, Filomena A.; Carneiro, Fabiana A.; Martins, Ivo C.; Assunção-Miranda, Iranaia; Faustino, André F.; Pereira, Renata M.; Bozza, Patricia T.Dengue virus (DENV) affects millions of people, causing more than 20,000 deaths annually. No effective treatment for the disease caused by DENV infection is currently available, partially due to the lack of knowledge on the basic aspects of the viral life cycle, including the molecular basis of the interaction between viral components and cellular compartments. Here, we characterized the properties of the inter...