Video Experimental Relacionado
Updated: Jun 5, 2026
08:56
Synthesis of 1,2-Azaborines and the Preparation of Their Protein Complexes with T4 Lysozyme Mutants
Published on: March 25, 2017
La reactividad de CORM-3 hacia las proteínas: la estructura cristalina de un complejo Ru(II) dicarbonyl-lizozima
Teresa Santos-Silva1, Abhik Mukhopadhyay, João D Seixas
1REQUIMTE-CQFB, Departamento de Química, FCT-UNL, 2829-516 Caparica, Portugal.
Journal of the American Chemical Society
|January 6, 2011
Resumen
CORM-3 libera monóxido de carbono y se une a las proteínas, formando aductos estables de rutenio. Este estudio revela las interacciones moleculares específicas y los sitios de coordinación involucrados en la unión a la proteína CORM-3.
Área de la Ciencia:
- Química bioorgánica Química bioorgánica.
- Química de las metaloproteínas
- Descubrimiento de Drogas Descubrimiento de Drogas
Sus antecedentes:
- Las moléculas liberadoras de monóxido de carbono (CORM) se utilizan para la entrega controlada de monóxido de carbono (CO) en sistemas biológicos.
- CORM-3, [fac-Ru ((CO) ((3) Cl ((κ ((2) -H ((2) NCH ((2) CO ((2)) ]), es un CORM conocido para la entrega de CO in vivo.
Objetivo del estudio:
- Para dilucidar las interacciones moleculares entre CORM-3 y las proteínas.
- Caracterizar los adductos de proteína de rutenio resultantes y su química de coordinación.
Principales métodos:
- Espectroscopia de emisión de plasma-atómico acoplada por inducción (ICP-AES)
- Espectrometría de masas por cromatografía líquida (LC-MS)
- Espectroscopia de infrarrojos (IR)
- Cristalografía de rayos X con rayos X.
Principales resultados:
- CORM-3 se disocia, perdiendo cloruro, glicinato y un ligando de CO al interactuar con las proteínas.
- Se forman aductos estables entre las proteínas y los fragmentos cis-Ru{II}{CO}{2} restantes.
- La cristalografía de rayos X identificó tres sitios de coordinación de rutenio en la lisozima de la clara de huevo de gallina, con el sitio primario que muestra una estructura fac-[{His15) Ru{CO}{2}{H2}{O}{3}] con una ocupación del 80%.
Conclusiones:
- El estudio proporciona la primera caracterización estructural y química detallada de las interacciones CORM-3-proteína.
- La comprensión de estos adductos es crucial para las aplicaciones terapéuticas de los CORM y el diseño de nuevos metalodrogas.
Videos de Conceptos Relacionados
02:58Crystal Field Theory - Octahedral Complexes
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
01:24Protein Organization
Proteins are polymers of amino acid residues. They are versatile and responsible for different cellular functions, including DNA replication, molecular transport, catalysis, and structural support. Proteins have a hierarchical structure comprising at least three levels of organization: primary, secondary, and tertiary structure. Some large proteins have a quaternary structure where individual protein subunits are linked together.
The primary structure of a protein is its amino acid sequence.
The primary structure of a protein is its amino acid sequence.
00:49Ligand Binding and Linkage
Allosteric proteins have more than one ligand binding site; the binding of a ligand to any of these sites influences the binding of ligands to the other sites. When a protein is allosteric, its binding sites are called coupled or linked. In the case of enzymes, the site that binds to the substrate is known as the active site and the other site is known as the regulatory site. When a ligand binds to the regulatory site, this leads to conformational changes in the protein that can influence the...
02:21Globular and Fibrous Proteins
Many proteins can be classified into two distinct subtypes - globular or fibrous. These two types differ in their shapes and solubilities.
Globular proteins are also known as spheroproteins and typically are approximately round in shape. They contain a mix of amino acid types and contain differing sequences in their primary structures. Globular proteins have many different functions, such as enzymes, cellular messengers, and molecular transporters. These roles often require the proteins to be...
Globular proteins are also known as spheroproteins and typically are approximately round in shape. They contain a mix of amino acid types and contain differing sequences in their primary structures. Globular proteins have many different functions, such as enzymes, cellular messengers, and molecular transporters. These roles often require the proteins to be...
01:57Gene Families
Gene families consist of groups of genes proposed to have originated from a common ancestor. Typically these arise through events in which a gene or genes are mistakenly duplicated during cell division. Unlike their parent genes (which are subject to selection pressure to maintain function), these gene copies do not need to preserve their sequences and may evolve at a relatively faster rate.
Occasionally these regions can be adapted to take on new roles within the organism, becoming novel genes...
Occasionally these regions can be adapted to take on new roles within the organism, becoming novel genes...
01:22Protein Folding
Overview