Results 51 to 60 of about 6,209 (262)

Control Óptimo para Trayectorias Circulares en un Robot Móvil

Revista Iberoamericana de Automática e Informática Industrial RIAI, 2011
Resumen: Se plantea el problema de encontrar un control óptimo lineal para la estabilizacíon de trayectorias circulares en un robot móvil tipo (2,0), utilizando la solución estándar al problema de control óptimo para un sistema lineal, la cual puede ...
J.E. Moisés Gutierrez Arias, Lucio Hernández Angulo, M. Monserrat Morín Castillo, J. Eladio Flores Mena   +3 more
doaj   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Diseño de un controlador lineal cuadrático gaussiano y un controlador autosintonizado por asignación de polos para el control del voltaje de un generador CD

Ingeniería, 2020
Contexto: En este artículo se presenta el diseño de un controlador lineal cuadrático gaussiano para regular el voltaje de un generador CD y se compara su desempeño con el de un regulador autoajustable sintonizado por asignación de polos.
Luis Edo Garcia Jaimes, David Piedrahita Flórez   +1 more
doaj   +1 more source

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

FEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva, Ariann E. Mendoza‐Martínez, P. Abril Medina‐Flores, Carlos Campero‐Basaldua, Alexander DeLuna, Soledad Funes   +5 more
wiley   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

FEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee, Dimitrios Bekiari, Sofia Doello, Karl Forchhammer   +3 more
wiley   +1 more source

Modulación Indirecta para el Convertidor Matricial Directo

Revista Iberoamericana de Automática e Informática Industrial RIAI, 2018
Los convertidores matriciales han sido estudiados y propuestos para diferentes aplicaciones.  Hay dos tipos de convertidores matriciales: los llamados indirectos y los directos, cada uno con sus ventajas y desventajas.
NIMROD Vazquez, Raúl Diosdado, Héctor Huerta, René Osorio, Eslí Vázquez, Claudia Hernández   +5 more
doaj   +1 more source

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Control adaptativo por modelo de referencia para la regulación del pH

Revista Iberoamericana de Automática e Informática Industrial RIAI
El control de fotobiorreactores raceway para la producción de microalgas se presenta como un reto significativo debido a su dinámica no lineal, la presencia de perturbaciones, el carácter biológico del sistema y la gran interacción entre las distintas ...
Malena Caparroz, Jose Luis Guzmán, Manuel Berenguel, Juan Diego Gil, Francisco Gabriel Acién   +4 more
doaj   +1 more source

Organ‐specific redox imbalances in spinal muscular atrophy mice are partially rescued by SMN antisense oligonucleotides

FEBS Letters, EarlyView.
We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley   +1 more source