Modelo de enlace cooperativo cuantitativo para proteínas intrínsecamente desordenadas que interactúan con

Da-Wei Li1, Mouzhe Xie2, Rafael Brüschweiler1,2,3

  • 1Campus Chemical Instrument Center, The Ohio State University, Columbus, Ohio 43210, United States.

Resumen

Un nuevo modelo, SILC, predice cuantitativamente cómo las proteínas intrínsecamente desordenadas (IDP) se unen a las nanopartículas. Esto ayuda a entender el comportamiento de IDP y diseñar nanomateriales para aplicaciones biológicas.

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The equilibrium binding constant (Kb) quantifies the strength of a protein-ligand interaction. Kb can be calculated as follows when the reaction is at equilibrium:
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Cooperative Allosteric Transitions01:58

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Cooperative allosteric transitions can occur in multimeric proteins, where each subunit of the protein has its own ligand-binding site. When a ligand binds to any of these subunits, it triggers a conformational change that affects the binding sites in the other subunits; this can change the affinity of the other sites for their respective ligands. The ability of the protein to change the shape of its binding site is attributed to the presence of a mix of flexible and stable segments in the...
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Cooperative Allosteric Transitions01:58

Cooperative Allosteric Transitions

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Proteins are dynamic macromolecules that carry out a wide variety of essential processes; however, the activities of most proteins depend on their interactions with other molecules or ions, known as ligands.
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Noncovalent Attractions in Biomolecules02:35

Noncovalent Attractions in Biomolecules

Noncovalent attractions are associations within and between molecules that influence the shape and structural stability of complexes. These interactions differ from covalent bonding in that they do not involve sharing of electrons.
Four types of noncovalent interactions are hydrogen bonds, van der Waals forces, ionic bonds, and hydrophobic interactions.
Hydrogen bonding results from the electrostatic attraction of a hydrogen atom covalently bonded to a strong-electronegative atom like oxygen,...
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