Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

Rheumatic Heart Disease III: Medical Management01:21

Rheumatic Heart Disease III: Medical Management

268
Rheumatic heart disease (RHD) management can be divided into two main strategies: prevention and long-term management.Primary PreventionPrimary prevention focuses on timely diagnosis and management of group A streptococcal pharyngitis to prevent acute rheumatic fever. The most widely used antibiotic for treating this condition is intramuscular benzathine penicillin G.Acute Rheumatic Fever TreatmentThe primary treatment goal for a patient diagnosed with acute rheumatic fever is to suppress the...
268
Rheumatic Heart Disease I: Introduction01:23

Rheumatic Heart Disease I: Introduction

415
Rheumatic heart disease or RHD is a chronic condition that results from rheumatic fever, causing permanent damage to the heart valves.Etiology and Risk FactorsIt primarily arises from rheumatic fever, an inflammatory disease that can develop after untreated or inadequately treated group A streptococcal (GAS) pharyngitis. Streptococcus spreads through direct contact with oral or respiratory secretions. While the bacteria are the causative agents, factors like malnutrition, overcrowding, poor...
415
Bacterial Phylum Spirochaetes01:30

Bacterial Phylum Spirochaetes

548
Spirochetes, unique bacteria in the phylum Spirochaetes, are gram-negative, motile, tightly coiled, slender, and flexible. They inhabit aquatic sediments and animals, with some causing diseases like syphilis. Spirochetes are classified into eight genera based on habitat, pathogenicity, phylogeny, and characteristics.Their distinctive motility arises from endoflagella, located within the cell’s periplasm. These endoflagella anchor at the cell poles and extend along the cell length, encased...
548
Development of Antibiotic Resistance01:30

Development of Antibiotic Resistance

1.2K
Antibiotic resistance is a major public health concern that arises when bacteria evolve mechanisms to withstand the effects of antibiotic treatments. This resistance can be intrinsic, acquired through genetic mutations, or transferred between bacteria via horizontal gene transfer. The development of antibiotic resistance poses significant challenges in treating bacterial infections and necessitates ongoing research to develop new therapeutic strategies.Intrinsic resistance occurs when bacterial...
1.2K
Bacterial Phylum Actinobacteria01:30

Bacterial Phylum Actinobacteria

582
Coryneform bacteria are gram-positive, aerobic, nonmotile rods that exhibit irregular, club-shaped, or V-shaped arrangements. Their V-shape results from snapping division, where the inner cell wall layer forms the cross-wall, while the outer layer remains intact until it ruptures on one side, causing the daughter cells to bend away.The primary genera are Corynebacterium and Arthrobacter. Corynebacterium includes diverse species, ranging from saprophytes to pathogens like Corynebacterium...
582
Defense Against Bacterial Pathogens01:31

Defense Against Bacterial Pathogens

2.6K
The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
2.6K

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

Ipilimumab and nivolumab for cancer treatment: a pharmacovigilance study based on the FDA adverse event reporting system database.

Frontiers in endocrinology·2026
Same author

Impact of living environmental quality on sarcopenia in middle-aged and older adults: evidence from cross-sectional and cohort analyses.

The journal of nutrition, health & aging·2026
Same author

Scotty: lattice coincidences for macromolecular crystallographic phasing.

Acta crystallographica. Section D, Structural biology·2026
Same author

Scotty: lattice coincidences in the Protein Data Bank.

Acta crystallographica. Section D, Structural biology·2026
Same author

Postoperative analgesic efficacy of intertransverse process block vs. erector spinae plane block in total laparoscopic hysterectomy: a randomized double-blind trial.

Frontiers in medicine·2026
Same author

Integrating Pharmacovigilance Data Mining and Mendelian Randomization to Identify Risk Profiles and Causal Targets of Opioid-Induced Delirium.

CNS neuroscience & therapeutics·2026
Same journal

Daily briefing: 'Cyborg' cockroaches breathe underwater with printed suit.

Nature·2026
Same journal

China boosts prestigious grants for young scientists - will it ease competition?

Nature·2026
Same journal

Incoming US science academy chief vows to 'double down' on research.

Nature·2026
Same journal

Author Correction: Synthesis of enantioenriched atropisomers by biocatalytic deracemization.

Nature·2026
Same journal

Electrodeposited self-assembled molecules for perovskite photovoltaics.

Nature·2026
Same journal

Neutrino's nursery found: the 'Shadow Blaster'.

Nature·2026
Ver todos los artículos relacionados

Video Experimental Relacionado

Updated: Jan 10, 2026

Bacterial Phylum Spirochaetes
01:30

Bacterial Phylum Spirochaetes

Published on: June 12, 2025

548

Predicción de la estructura de alta resolución y el problema de la fase cristalográfica.

Bin Qian1, Srivatsan Raman, Rhiju Das

  • 1University of Washington, Department of Biochemistry and Howard Hughes Medical Institute, Box 357350, Seattle 98195, USA.

Nature
|October 16, 2007
PubMed
Resumen
Este resumen es generado por máquina.

Un nuevo método computacional refina los modelos de proteínas de baja resolución a una precisión atómica. Este enfoque mejora la precisión estructural y ayuda a resolver el problema de la fase cristalográfica de rayos X, incluso para predicciones de novo.

Más Videos Relacionados

Development of Antibiotic Resistance
01:30

Development of Antibiotic Resistance

Published on: June 12, 2025

1.2K
Bacterial Phylum Actinobacteria
01:30

Bacterial Phylum Actinobacteria

Published on: June 6, 2025

582

Videos de Experimentos Relacionados

Last Updated: Jan 10, 2026

Bacterial Phylum Spirochaetes
01:30

Bacterial Phylum Spirochaetes

Published on: June 12, 2025

548
Development of Antibiotic Resistance
01:30

Development of Antibiotic Resistance

Published on: June 12, 2025

1.2K
Bacterial Phylum Actinobacteria
01:30

Bacterial Phylum Actinobacteria

Published on: June 6, 2025

582

Área de la Ciencia:

  • Biología estructural computacional.
  • La predicción de la estructura de las proteínas.
  • Cristalografía de rayos X con rayos X.

Sus antecedentes:

  • Refinar los modelos de proteínas de baja resolución a la precisión atómica es un desafío significativo.
  • Las estructuras exactas de proteínas son cruciales para la comprensión de la función biológica y el descubrimiento de fármacos.

Objetivo del estudio:

  • Desarrollar y validar un nuevo enfoque computacional para refinar los modelos de estructura de proteínas.
  • Mejorar la precisión de las estructuras de proteínas derivadas de diversas fuentes, incluyendo el modelado experimental y comparativo.
  • Evaluar la utilidad de modelos refinados para resolver el problema de la fase cristalográfica de rayos X.

Principales métodos:

  • Un método de refinación basado en la energía que centra el muestreo en regiones propensas a errores.
  • Utilizando un campo de fuerza de todos los átomos físicamente realista para la relajación de la estructura.
  • Aplicación a modelos a partir de datos de resonancia magnética nuclear (RMN) y modelado comparativo.

Principales resultados:

  • Mejora significativa en las conformaciones de la columna vertebral y la precisión de colocación de la cadena lateral.
  • Rendimiento mejorado en la resolución del problema de fase cristalográfica de rayos X a través de la sustitución molecular.
  • La predicción exitosa de la estructura de la proteína de novo logra la precisión de la sustitución molecular sin la información de la fase experimental.

Conclusiones:

  • El método de refinamiento desarrollado mejora sustancialmente la precisión del modelo de proteínas.
  • Este enfoque ofrece una poderosa estrategia para abordar los difíciles problemas de fase de reemplazo molecular.
  • Es prometedor para avanzar en la predicción de la estructura de la proteína de novo y la determinación de la estructura experimental.