Alejandro Villalta

The Expanding Histone Universe: Histone-Based DNA Organization in Noneukaryotic Organisms

Alejandro Villalta, Sashi R. Weerawarana, Michael L. Nosella, Karolin Luger

Histones are small basic proteins that form the proteinaceous core of the nucleosome, the repeating building block of chromatin in all eukaryotes. Long thought to be exclusive to eukaryotes, histones are now increasingly appreciated for their roles in organizing genomes across all …

us (code pays fourni par la source)

Melbournevirus encodes a shorter H2B-H2A doublet histone variant that forms structurally distinct nucleosome structures

Alejandro Villalta, Hugo Bisio, Chelsea Marie Toner, Chantal Abergel et autres

Unique among viruses, some giant viruses utilize histones to organize their genomes into nucleosomes. Melbournevirus encodes a distinct H2B-H2A histone doublet variant in addition to the canonical H4-H3 and H2B-H2A doublets. This viral histone variant has a truncated H2B portion and its …

us, fr (code pays fourni par la source)

Melbournevirus encodes a shorter H2B-H2A doublet histone variant that forms structurally distinct nucleosome structures

Alejandro Villalta, Hugo Bisio, Chelsea Marie Toner, Chantal Abergel et autres

Abstract Unique among viruses, some giant viruses utilize histones to organize their genomes into nucleosomes. Melbournevirus encodes a distinct H2B-H2A histone doublet variant in addition to the canonical H4-H3 and H2B-H2A doublets. This viral histone variant has a truncated H2B portion and …

us, fr (code pays fourni par la source)

Functional redundancy revealed by the deletion of the mimivirus GMC-oxidoreductase genes

Jean-Marie Alempic, Hugo Bisio, Alejandro Villalta, Sébastien Santini et autres

Abstract The mimivirus 1.2 Mb genome was shown to be organized into a nucleocapsid-like genomic fiber encased in the nucleoid compartment inside the icosahedral capsid. The genomic fiber protein shell is composed of a mixture of two GMC-oxidoreductase paralogs, one of them …

fr, Maroc, it (code pays fourni par la source)

Functional redundancy revealed by the deletion of the mimivirus GMC-oxidoreductase genes

Jean-Marie Alempic, Hugo Bisio, Alejandro Villalta, Sébastien Santini et autres

Abstract The mimivirus 1.2Mb genome was shown to be organized into a nucleocapsid-like genomic fiber encased in the nucleoid compartment inside the icosahedral capsid (1). The genomic fiber protein shell is composed of a mixture of two GMC-oxidoreductase paralogs, one of them …

fr, Maroc, ru, it (code pays fourni par la source)

Evidence for [2Fe-2S]2+ and Linear [3Fe-4S]1+ Clusters in a Unique Family of Glycine/Cysteine-Rich Fe-S Proteins from Megavirinae Giant Viruses

Alejandro Villalta, Audrey Lartigue, Martin Clémancey, Deborah Byrne et autres

We have discovered a protein with an amino acid composition exceptionally rich in glycine and cysteine residues in the giant virus mimivirus. This small 6 kDa protein is among the most abundant proteins in the icosahedral 0.75 μm viral particles; it has …

fr (code pays fourni par la source)

The giant mimivirus 1.2 Mb genome is elegantly organized into a 30-nm diameter helical protein shield

Alejandro Villalta, Alain Schmitt, Leandro F. Estrozi, Emmanuelle R. J. Quemin et autres

family of giant dsDNA viruses. Little is known about the organization of the 1.2 Mb genome inside the membrane-limited nucleoid filling the ~0.5 µm icosahedral capsids. Cryo-electron microscopy, cryo-electron tomography, and proteomics revealed that it is encased into a ~30-nm diameter helical …

fr, Maroc, de, gb (code pays fourni par la source)

Author response: The giant mimivirus 1.2 Mb genome is elegantly organized into a 30-nm diameter helical protein shield

Alejandro Villalta, Alain Schmitt, Leandro F. Estrozi, Emmanuelle R. J. Quemin et autres

As a Russian doll, mimivirus dsDNA genome is folded in a nucleocapsid-like structure enclosed in the nucleoid compartment, encased in the icosahedral capsid itself decorated by long glycosylated fibrils surprisingly made of the same protein as the genomic fiber.

fr, Maroc, de, gb (code pays fourni par la source)

The giant Mimivirus 1.2 Mb genome is elegantly organized into a 30 nm helical protein shield

Alejandro Villalta, Alain Schmitt, Leandro F. Estrozi, Emmanuelle R. J. Quemin et autres

Abstract Mimivirus is the prototype of the Mimiviridae family of giant dsDNA viruses. Little is known about the organization of the 1.2 Mb genome inside the membrane-limited nucleoid filling the ∼0.5 µm icosahedral capsids. Cryo-electron microscopy, cryo-electron tomography and proteomics revealed that …

fr, de, gb (code pays fourni par la source)

The Mimivirus 1.2 Mb dsDNA genome is elegantly organized into a nuclear-like weapon

Chantal Abergel, Alejandro Villalta, Emmanuelle R. J. Quemin, Alain Schmitt et autres

fr, us, de, gb (code pays fourni par la source)

Políticas crediticias y de cobranza en la empresa "Edmar & Torres Y Cía.", año 2016: un estudio retrospectivo.

Alejandro Villalta, Patricia Elizabeth

The research work was conducted in the city of Machala, province of El Oro, in the company called Edmar & towers and Cia., which is dedicated to the marketing of balanced Nicovita shrimp, takes 4 years in the market, being one of …

Presupuesto y planes financieros para proyectos agrícolas aplicados al proceso de producción de arroz.

Alejandro Villalta, María Isabel

The budget is extremely important at the corporate level, since it is considered a basic requirement for economic investment, managing the necessary memories in a future period, it has to take into account at the time to make a budget plan have …