Results 31 to 40 of about 22,123 (294)

Criadores hispanos de caballos de carreras en el Bajo Imperio en las cartas de Símaco

Espacio, Tiempo y Forma. Serie II, Historia Antigua, 2010
Se recogen todas las menciones de caballos hispanos en los autores antiguos. Los criadores de caballos en Hispania. Las marcas de yeguadas. Los nombres de los propietarios. La exportación de caballos hispanos en el siglo II. Eran velocísimas. Retratos de
José María Blázquez Martínez
doaj   +1 more source

Structural and biochemical analysis of a B12 superbinder

FEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices, Jacob J. Whittaker, Dirk J. Slotboom, Albert Guskov   +3 more
wiley   +1 more source

La question nationale des exportations hors hydrocarbures -Méthodologie pour une approche stratégique-

دراسات العدد الاقتصادي, 2017
La question de l’après-pétrole en Algérie a été mise à l’ordre du jour à la fin des années 1970. Depuis, elle n’a pas avancé d’un iota. Bien plus, l’économie algérienne s’est enfoncée davantage dans son « addiction » à la rente des hydrocarbures.
Mohamed BOUCHAKOUR
doaj   +1 more source

Exports, Export Destinations, and Skills [PDF]

American Economic Review, 2012
This paper explores the links between exports, export destinations, and skill utilization. We identify two mechanisms behind these links: differences across destinations in quality valuation and in exporting required services, activities that are intensive in skilled labor. Depending on the characteristics of the source country (income, language), the
Irene Brambilla, Daniel Lederman, Guido Porto   +2 more
openaire   +3 more sources

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

FEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav, Bogdan I. Florea, Sebastian Geibel   +2 more
wiley   +1 more source

Logistics and exports [PDF]

, 2008
Drawing on a new and comprehensive measure of logistics quality, our gravity model suggests logistics in the exporting and partner-country can have an important impact on bilateral exports. A one standard deviation improvement in the exporter’s logistics quality, which for example would improve Gabon to the level of Guinea, would raise exports by ...
Alberto Behar, Phil Manners
openaire   +3 more sources

RNA‐related functions of BRCA2 in transcription, replication, and genome stability

FEBS Letters, EarlyView.
Beyond its role in homologous recombination, BRCA2 regulates R‐loop homeostasis, DNA–RNA hybrid resolution, RNA polymerase II dynamics, and transcriptional activation. Disruption of any of these functions can contribute to genome instability, inflammatory signaling, and tumorigenesis. BRCA2 is a central tumor suppressor protein best known for its roles
Lucia Alvaro‐Aranda, Sreerama Chaitanya Sridhara, Aura Carreira   +2 more
wiley   +1 more source

The heterodimeric amino acid transporters (HAT) of the SLC7/SLC3 family: A structure−function relationships and relevance to human pathology

FEBS Letters, EarlyView.
Heterodimeric amino acid transporters consist of SLC7 and SLC3 family proteins arranged in a conserved structural organization. They regulate nutrient transport across cell membranes, supporting essential cellular functions. These transporters also contribute to xenobiotic/drug uptake and distribution.
Mariafrancesca Scalise, Tiziano Mazza, Raffaella Scanga, Lara Console, Michele Galluccio, Cesare Indiveri   +5 more
wiley   +1 more source

Desempenho agronômico de progênies de maracujazeiro-roxo e maracujazeiro-azedo no Distrito Federal Behavior of purple passionfruit and yellow passionfruit genotypes in Federal District, Brazil

Revista Brasileira de Fruticultura, 2009
O maracujá-roxo é uma fruta que, em boas condições de produtividade e qualidade, pode transformar-se numa fonte de renda importante para o agricultor, devido ao elevado valor pago no mercado europeu pela fruta in natura.
Sidney Almeida Filgueira de Medeiros, Márcio Carvalho Pires, Osvaldo Kiyoshi Yamanishi, José Ricardo Peixoto, Nilton Tadeu Vilela Junqueira, Juliana Galvarros Bueno Lobo Ribeiro   +5 more
doaj   +1 more source

DNA ligase LigE increases bacterial transformation with damaged extracellular DNA

FEBS Letters, EarlyView.
The DNA ligase LigE from the naturally competent Gram‐negative bacterium Neisseria gonorrhoaea increases transformation with cut extracellular DNA. This process is ATP‐dependent and relies on the catalytic activity of LigE; it also requires that LigE contains an intact periplasmic localisation sequence, indicating that ligE functions in the periplasm ...
Jolyn Pan, Avi Singh, Shrawani Weralupe Gamladdalage, Joanna Hicks, Adele Williamson   +4 more
wiley   +1 more source