Video Experimental Relacionado
Updated: Jul 23, 2026

11:21
Bioinformatics Resources for the Study of Glycan-Mediated Protein Interactions
Published on: January 20, 2022
Foldameres glicosilados para sondear la interacción hidrato de carbono-hidrato de carbono
Graham L Simpson1, Andrew H Gordon, David M Lindsay
1School of Chemistry, University of Bristol, Bristol, BS8 1TS, UK.
Journal of the American Chemical Society
|August 17, 2006
Resumen
Los investigadores sintetizaron un plegable helicoidal estable y soluble en agua con múltiples unidades de carbohidratos. Esta nueva estructura hace avanzar el estudio de las interacciones carbohidrato-carbohidrato.
Área de la Ciencia:
- Química de los carbohidratos Química de los carbohidratos
- Química supramolecular de las moléculas.
- Ciencia de los Biomateriales Ciencia de los Biomateriales.
Sus antecedentes:
- Las interacciones carbohidrato-carbohidrato (CCI) son cruciales en los procesos biológicos.
- Estudiar CCIs es un desafío debido a la complejidad y solubilidad de los carbohidratos.
- Se necesita desarrollar andamios sintéticos para imitar y estudiar estas interacciones.
Objetivo del estudio:
- Para sintetizar un nuevo plegador helicoidal triglicosilado.
- Para crear una estructura estable capaz de presentar múltiples unidades de carbohidratos en las proximidades.
- Establecer una nueva plataforma para investigar las interacciones entre carbohidratos y carbohidratos.
Principales métodos:
- Utilizó una combinación de aminoácidos basados en ciclopentilo y pirrolidinilo para la síntesis de foldamer.
- Incorporó tres unidades de carbohidratos en la estructura helicoidal del pliegue.
- Caracterizó la estabilidad y las propiedades estructurales del foldamer en condiciones acuosas.
Principales resultados:
- Se ha sintetizado con éxito un foldamer helicoidal triglicosilado.
- El foldamer demostró estabilidad en el agua, manteniendo la proximidad de los carbohidratos.
- La estructura imita efectivamente la disposición espacial de los carbohidratos en los sistemas biológicos.
Conclusiones:
- El plegador helicoidal sintetizado proporciona una plataforma estable y bien definida.
- Este foldamer representa un nuevo enfoque para el estudio de las interacciones entre carbohidratos y carbohidratos.
- Los hallazgos abren vías para el diseño de nuevos biomateriales y terapias basadas en carbohidratos.
Videos de Conceptos Relacionados
Chemistry of Carbohydrates
Carbohydrates are an essential part of the diet in humans and animals. Grains, fruits, and vegetables are natural sources of carbohydrates that provide energy to the body, particularly through glucose, a simple sugar that is a component of starch and an ingredient in many staple foods. The stoichiometric formula (CH2O)n, where n is the number of carbons in the molecule represents carbohydrates. In other words, the ratio of carbon to hydrogen to oxygen is 1:2:1 in carbohydrate molecules. This...
Membrane Carbohydrates
The plasma membrane is a dynamic barrier composed of lipids, proteins, and carbohydrates. It is the epicenter of many cellular processes required for cell growth and survival. Carbohydrates have unique structural and chemical properties that help the plasma membrane to carry out its functions effectively.
Membrane carbohydrates do not have any hydrophobic region and are exclusively located on the cell's outer surface. The addition of sugar molecules or glycosylation of proteins happens in...
Membrane carbohydrates do not have any hydrophobic region and are exclusively located on the cell's outer surface. The addition of sugar molecules or glycosylation of proteins happens in...
Protein Glycosylation
Glycosylation, the most common post-translational modification for proteins, serves diverse functions. Adding sugars to proteins makes the proteins more resistant to proteolytic digestion. Glycosylated proteins can act as markers and receptors to promote cell-cell adhesion. Additionally, they have many essential quality control functions in the cell, such as correct protein folding and facilitating transport of misfolded proteins to the cytosol, which can be degraded.
Glycosylation occurs in...
Glycosylation occurs in...
Oligosaccharide Assembly
Protein glycosylation starts in the ER lumen and continues in the Golgi apparatus. Glycosyltransferases catalyze the addition of sugar molecules or glycosylation of proteins. Usually, these enzymes add sugars to the hydroxyl groups of selected serine or threonine residues to form O-linked glycans or the amino groups of asparagine residues to form N-linked glycans. Different positions on the same polypeptide chain can contain differently linked glycans.
Multiple sugar molecules that may or may...
Multiple sugar molecules that may or may...
Protein Folding Quality Check in the RER
ER is the primary site for the maturation and folding of soluble and transmembrane secretory proteins. The calnexin cycle is a specific chaperone system that folds and assesses the confirmation of N-glycosylated proteins before they can exit the ER lumen. The primary players of this quality check pipeline are the lectins, ER-resident chaperones, and a glucosyl transferase enzyme. In case the calnexin system in the lumen fails to salvage a misfolded protein, it is transported to the cytoplasm...
Membrane Carbohydrates
The plasma membrane is a dynamic barrier composed of lipids, proteins, and carbohydrates. It is the epicenter of many cellular processes required for cell growth and survival. Carbohydrates have unique structural and chemical properties that help the plasma membrane to carry out its functions effectively.
Membrane carbohydrates do not have any hydrophobic region and are exclusively located on the cell's outer surface. The addition of sugar molecules or glycosylation of proteins happens in...
Membrane carbohydrates do not have any hydrophobic region and are exclusively located on the cell's outer surface. The addition of sugar molecules or glycosylation of proteins happens in...

