Análisis de RMN de la arquitectura y remodelación funcional de una proteína modular multidominio, RPA

Chris A Brosey1, Marie-Eve Chagot, Mark Ehrhardt

  • 1Department of Biochemistry, and Center for Structural Biology, Vanderbilt University, Nashville, Tennessee 37232-8725, USA.

Resumen

Las proteínas modulares como la proteína de replicación A (RPA) cambian de forma. La espectroscopia de RMN revela cómo la arquitectura RPA remodela la unión del ADN, descubriendo nuevos conocimientos sobre su función.

Videos de Conceptos Relacionados

Protein Modifications in the RER01:26

Protein Modifications in the RER

Modification of secretory and transmembrane proteins entering the rough ER begins in the ER lumen. These modifications aid in protein folding and stabilize the acquired tertiary structure. Protein modifications in the rough ER co-occur at different stages of protein folding.
Broadly, these modifications can be categorized into four main categories — glycosylation, formation of disulfide bonds, assembly of protein subunits, and specific proteolytic cleavages like removal of signal sequences.
Assembly of Signaling Complexes01:30

Assembly of Signaling Complexes

Multiprotein signaling complexes are formed in a dynamic process involving protein-protein interactions at the cytoplasmic domain of transmembrane receptors or enzymatic and non-enzymatic proteins associated with the receptor. These complexes ensure the activation and propagation of intracellular signals that regulate cell functions.
Interaction domains in cell signaling
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...
Conservation of Protein Domains Over Different Proteins02:26

Conservation of Protein Domains Over Different Proteins

Protein domains are small structurally independent units that are part of a single amino acid chain.  Although these domains are often structurally independent, they may rely on synergistic effects to perform their functions as part of a larger protein. Protein domains may be conserved within the same organism, as well as across different organisms.
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to form...