Video Experimental Relacionado

Updated: May 5, 2026

Iterative Optimization of DNA Duplexes for Crystallization of SeqA-DNA Complexes

Iterative Optimization of DNA Duplexes for Crystallization of SeqA-DNA Complexes

Published on: November 1, 2012

La estructura de la solución del complejo ETS1-ADN humano revela un nuevo modo de unión y verdadera intercalación de

M H Werner¹, M Clore, C L Fisher

¹Laboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892-0520, USA.

|December 1, 1995

Resumen

La oncoproteína humana ETS1 es la oncoproteína ETS1 en el ser humano.

Área de la Ciencia:

Biología Molecular Biología Molecular
Biología Estructural Biología estructural.
La bioquímica es la bioquímica.

Sus antecedentes:

La oncoproteína humana ETS1 juega un papel en los procesos celulares.
Comprender su mecanismo de unión al ADN es crucial para comprender su función.

Objetivo del estudio:

Para dilucidar la estructura de la solución del dominio de unión al ADN (DBD) del ETS1 humano (hETS1) complejo con ADN.
Para caracterizar el modo único de interacción hélice-giro-hélice (HTH) -ADN empleado por hETS1.

Principales métodos:

Se utilizó la espectroscopia de Resonancia Magnética Nuclear (RMN) para determinar la estructura 3D del complejo hETS1 DBD-DNA.
Análisis detallado de los datos estructurales para comprender los contactos proteína-ADN.

Principales resultados:

El dominio de unión al ADN hETS1 (DBD) interactúa con el ADN a través de un nuevo mecanismo de hélice-vuelta-hélice (HTH).
El reconocimiento implica la unión de ranuras principales por la hélice de reconocimiento HTH y la intercalación de ranuras menores por una cadena lateral de triptófano.
Esta interacción induce una torcedura significativa en el ADN y altera su menor anchura de ranura.

Conclusiones:

La familia ETS de proteínas de unión al ADN representa una clase distinta de proteínas HTH.
El modo único de unión al ADN de hETS1 tiene implicaciones para su función como oncoproteína.

Más Videos Relacionados

Analyzing and Building Nucleic Acid Structures with 3DNA

Analyzing and Building Nucleic Acid Structures with 3DNA

Published on: April 26, 2013

Deciphering Molecular Mechanism of Histone Assembly by DNA Curtain Technique

Deciphering Molecular Mechanism of Histone Assembly by DNA Curtain Technique

Published on: March 9, 2022

Videos de Conceptos Relacionados

The DNA Helix

The DNA Helix

Conserved Binding Sites

Conserved Binding Sites

Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally...

DNA as a Genetic Template

DNA as a Genetic Template

Two structural features of the DNA molecule provide a basis for the mechanisms of heredity: the four nucleotide bases and its double-stranded nature. The Watson-Crick model of double-helical DNA structure, proposed in 1952, drew heavily upon the X-ray crystallography work of researchers Rosalind Franklin and Maurice Wilkins. Watson, Crick, and Wilkins jointly received the Nobel Prize in Physiology or Medicine for their work in 1962. Franklin was, controversially, excluded from the prize for...

Nucleosome Remodeling

Nucleosome Remodeling

Nucleosomes are the basic units of chromatin compaction. Each nucleosome consists of the DNA bound tightly around a histone core, which makes the DNA inaccessible to DNA binding proteins such as DNA polymerase and RNA polymerase. Hence, the fundamental problem is to ensure access to DNA when appropriate, despite the compact and protective chromatin structure.
Nucleosome remodeling complex
Eukaryotic cells have specialized enzymes called ATP-dependent nucleosome remodeling enzymes. These enzymes...

Single-Strand DNA Binding Proteins

Single-Strand DNA Binding Proteins

For successful DNA replication, the unwinding of double-stranded DNA must be accompanied by stabilization and protection of the separated single strands of the DNA. This crucial task is performed by single-strand DNA-binding (SSB) proteins. They bind to the DNA in a sequence-independent manner, which means that the nitrogenous bases of the DNA need not be present in a specific order for binding of SSB proteins to it. The binding of SSB proteins straightens single-stranded DNA (ssDNA) and makes...

The DNA Helix

The DNA Helix

Deoxyribonucleic acid, or DNA, is the genetic material responsible for passing traits from generation to generation in all organisms and most viruses. DNA is composed of two strands of nucleotides that wind around each other to form a spring-like structure called a double helix. However, the double helix is not perfectly symmetrical. Instead, there are regularly occurring grooves in the structure. The major groove occurs where the sugar-phosphate backbones are relatively far apart. This space...